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Jan 19, 2011

dollar

Chiesi pleads guilty in Galleon insider trading case

Ex-hedge fund employee cops to securities-fraud conspiracy counts

SAN FRANCISCO (MarketWatch) — Danielle Chiesi admitted conspiring to commit securities fraud Wednesday, the biggest guilty plea so far in the government’s insider-trading investigation of hedge fund Galleon Group.
Chiesi, a former employee of hedge fund firm New Castle Funds LLC, pled guilty to three counts of conspiracy to commit securities fraud before U.S. District Judge Richard Holwell in Manhattan.

Rackspace on future of ‘the cloud’

Lanham Napier, the CEO of Rackspace Hosting, talks about how a hosting company transitions from a cloud and about prospects for a shake-up in the cloud provision market.
Each count carries a maximum sentence of five years in prison and a maximum fine of $250,000, or twice the gross gain or loss from the offense, the Justice Department noted in a statement.
Chiesi, as well as Mark Kurland, a top executive at New Castle, and allegedly Galleon founder Raj Rajaratnam, shared and traded on material, nonpublic information given as tips by company insiders such as Robert Moffat, a former group executive at International Business Machines Corp. /quotes/comstock/13*!ibm/quotes/nls/ibm (IBM 155.43, -0.26, -0.17%) , the Justice Department said.
The insider information — about companies including IBM, Advanced Micro Devices /quotes/comstock/13*!amd/quotes/nls/amd (AMD 7.94, +0.01, +0.13%)  and Sun Microsystems /quotes/comstock/15*!orcl/quotes/nls/orcl (ORCL 31.40, -0.20, -0.63%)  — helped New Castle generate profits of at least $1.7 million, according to the government.
Chiesi, 45, is due to be sentenced on May 13, the Justice Department noted. Moffat and Kurland have already pleaded guilty and been sentenced.
Rajaratnam’s fighting the federal insider-trading allegations against him. The Justice Department noted that the charges are “merely accusations” and that he’s presumed innocent until proven guilty.

dollar

U.S. stocks drop as Goldman weighs on financials

NEW YORK (MarketWatch) -- U.S. stocks fell on Wednesday, with the S&P 500 and the Nasdaq Composite both posting their biggest one-day drop since November, as revenues from Goldman Sachs and an outlook from American Express disappointed investors. The Dow Jones Industrial Average /quotes/comstock/10w!i:dji/delayed (DJIA 11,825, -12.86, -0.11%) fell 12.86 points, or 0.1%, to 11,825.07, weighed by 4% drop in shares of Bank of America /quotes/comstock/13*!bac/quotes/nls/bac (BAC 14.38, +0.01, +0.07%) , and more than 2% drops in shares of both American Express /quotes/comstock/13*!axp/quotes/nls/axp (AXP 45.15, -0.09, -0.20%) and JP Morgan Chase /quotes/comstock/13*!jpm/quotes/nls/jpm (JPM 43.75, +0.04, +0.09%) . The S&P 500 index /quotes/comstock/21z!i1:in\x (SPX 1,282, -13.10, -1.01%) dropped 13.10 points, or 1%, to 1,281.92, with financial and materials weighing the most. The Nasdaq Composite /quotes/comstock/10y!i:comp (COMP 2,725, -40.49, -1.46%) lost 40.49 points, or 1.5%, to 2,725.36. It was the worst percentage drop for both the S&P and the Nasdaq since Nov. 16.

dollar

Mosaic shares drop on Cargill stock-sale plan

SAN FRANCISCO (MarketWatch) — Mosaic Co. shares fell more than 10% on Wednesday, a day after the fertilizer company announced that privately held agricultural giant Cargill plans to bail out as its top stakeholder.
/quotes/comstock/13*!mos/quotes/nls/mos MOS 76.20, +0.05, +0.06%
Mosaic’s run-up
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Cargill, which owns a 64% stake in Mosaic /quotes/comstock/13*!mos/quotes/nls/mos (MOS 76.20, +0.05, +0.06%) , said Tuesday that it will sell its 286 million shares, according to a joint statement from both companies.
The sale would be valued at more than $24 billion at Tuesday’s closing prices.
Mosaic shares have rallied 21% in the past year, riding a boom in commodity-related stocks. But the stock dropped $8.92 to close at $76.15 on Wednesday, as Wall Street analysts offered mixed reviews of the deal.
Cargill said the transaction will enable the company to remain private while meeting the diversification and distribution needs of the charities formed by Margaret Cargill, one of the company’s biggest stakeholders.
For Mosaic, the deal is expected to improve its financial flexibility and increase the liquidity of its common stock, but Goldman Sachs analyst Robert Koort said he sees both bad and good in the news.
The positives for Mosaic include “improved liquidity, potential incorporation into the S&P 500 /quotes/comstock/21z!i1:in\x (SPX 1,282, -13.10, -1.01%) , independence, flexibility,” while the downside is Mosaic’s inability to return cash to shareholders, he said.

Earnings don't inspire stocks

Apple and IBM report record results, but the stock market doesn't seem impressed, as Goldman Sachs's earnings and the latest housing data fail to inspire. John Shipman, Kathleen Madigan and George Stahl report.
Koort added that the likelihood of a takeout and the related upside that would bring in the next two years are diminished with the sale.
Morgan Stanley analyst Vincent Andrews had a more bullish take on Mosaic stock, reiterating his overweight rating regardless of the near-term lull.
“While it is reasonable to assume that Mosaic’s shares could underperform in the near term as the market digests [the] news, we expect the market to ultimately conclude that the transaction is a net positive,” he said in a note, adding that the deal has no impact on Mosaic’s fundamentals and earnings.
Citigroup analyst P.J. Juvekar stood by his hold rating on the shares, pointing to some short-term volatility and better options in the sector.
“We remain bullish on the North American fertilizer producers, particularly as the lagged impact of higher prices begins to flow through to earnings,” he said. Potash Corp. /quotes/comstock/13*!pot/quotes/nls/pot (POT 166.17, -0.64, -0.38%) , Mosaic’s primary rival, is Juvekar’s top choice in the group.
Potash shares drifted almost 4% lower to $166.81 but have jumped 45% in the past year.
Mosaic could become another takeover target at some point, considering the recent activity in the sector. BHP Billiton /quotes/comstock/13*!bhp/quotes/nls/bhp (BHP 90.55, -0.04, -0.04%)  made a failed $40 billion attempt to buy Potash, while Russia’s OAH Uralkali announced in December a deal to buy a domestic rival for almost $8 billion.

dollar

Dollar retreats to eight-week low against euro

Traders note broad-based pullback for U.S. currency


NEW YORK (MarketWatch) — The U.S. dollar lost ground Wednesday, helping the euro touch its highest level in two months, as investors became more comfortable with Europe’s debt situation and looked forward to economic data from China.
The dollar index /quotes/comstock/11j!i:dxy0 (DXY 78.57, -0.39, -0.50%) , which tracks the greenback against a basket of six other currencies, fell to 78.594, compared with 78.972 late Tuesday.
The euro /quotes/comstock/21o!x:seurusd (EURUSD 1.3470, +0.0081, +0.6051%)  touched $1.3538, the highest since late November. It lately traded at $1.3469, up from $1.3388 in late North American trading Tuesday.

Goldman Sachs disappoints

Goldman Sachs reports fourth-quarter earnings that fell by more than 50%, disappointing analysts.
Against the Japanese currency /quotes/comstock/21o!x:susdjpy (USDYEN 81.9800, -0.5300, -0.6417%) , the dollar fell to 82.04 yen, down from ¥82.61.
China’s expected to release gross-domestic-product and inflation data Thursday, analysts said. A news report from Hong Kong-based Phoenix Television said the reports will show Chinese consumer prices rose at a 4.6% annual rate in December, cooling from a 5.1% pace in November.
Despite a seeming lack of other contributing factors, “the pro-risk mood is in full force and key technical breaks are happening across the board,” said Kit Juckes, head of foreign-exchange strategy at Societe Generale.
“All concerns regarding EMU [Europe’s Economic and Monetary Union], inflation in emerging markets and particularly China are forgotten,” while the heightened sentiment toward risk threatens to overwhelm the bullish trading seen recently in the dollar, he said.
President Barack Obama, in a joint news conference in Washington, pressed Chinese President Hu Jintao to allow the Chinese yuan to strengthen faster. Jintao recently questioned the dollar’s reserve currency role in an interview before his official visit to the U.S. Read more on Obama, Jintao news conference.
Also Wednesday, data showed that December housing starts slowed more than expected, but building permits jumped more than forecast. Read more on U.S. housing starts.
“Mixed U.S. housing-market data and a stronger [Chinese yuan] during the Sino-U.S. talks will probably allow for a slightly weaker U.S. dollar, as long as investors maintain their calm regarding euro-zone debt woes,” wrote strategists at UniCredit Bank in Milan.

Peripheral vision

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The euro pressed back toward its intraday high after the Greek and German finance ministries denied a report in the German weekly Die Zeit that German officials were weighing a plan that would allow Greece to retire some of its debt by using subsidized credits from the European Financial Stability Facility.
Separately, Portugal completed a sale of 750 million euros ($1.01 billion) of 12-month Treasury bills, with the average yield declining to 4.029% from 5.28% in a December sale. The sale follows last week’s auction of government bonds.
It’s also significant that Spain — its bonds and bank stocks — have rebounded, indicating the biggest economy of the peripheral countries won’t fall as far, said Jens Nordvig, global head of G10 FX strategy at Nomura Securities International.
“Spain is going to be much more resilient,” a key factor in the European Central Bank’s ability to normalize policy, he said. The firm expect the central bank to raise interest rates in September.
While the U.S. currency may remain volatile in coming weeks, “as a big theme for this year we think the dollar is on track to find a bottom” around these levels against the euro, Nordvig said.

Fresh gains for sterling

The British pound /quotes/comstock/21o!x:sgbpusd (GBPUSD 1.5997, +0.0031, +0.1942%)  pared earlier gains but remained up slightly at $1.5986, from $1.5965.
Employment figures released Wednesday showed the number of British workers claiming jobless benefits unexpectedly posted a small decline, but the unemployment rate increased.
The pound had jumped Tuesday after government data showed inflation accelerated to an annual rate of 3.7% in December, boosting expectations the Bank of England will be forced to hike rates sooner than previously expected. Read more on U.K. inflation, interest rates.
“Sterling has continued to gain on the perception that further quantitative easing appears unlikely, and that rates here are likely to start rising ahead of rates in Europe and the U.S.,” said Michael Hewson, market analyst at CMC Markets.
“Friday’s retail-sales figures could prove to be a key indicator to future sterling direction, with expectations pretty low, given the recent downbeat expectations due to last month’s cold weather,” he said.
Deborah Levine is a MarketWatch reporter, based in New York. William L. Watts in London and Sarah Turner in Sydney contributed to this report.


dollar


U.S. Factories Buck Decline

U.S. manufacturing, viewed as a lost cause by many Americans, has begun creating more jobs than it eliminates for the first time in more than a decade.
As the economy recovered and big companies began upgrading old factories or building new ones, the number of manufacturing jobs in the U.S. last year grew 1.2%, or 136,000, the first increase since 1997, government data show. That total will grow again this year, according to economists at IHS Global Insight and Moody's Analytics.
James Hagerty has encouraging news from the U.S. manufacturing sector, which is adding more jobs than it's losing for the first time in more than a decade.
Among others, major auto makers—both domestic and transplants—are hiring. Ford Motor Co. announced last week it planned to add 7,000 workers over the next two years.
The economists' projections for this year—calling for a gain of about 2.5%, or 330,000 manufacturing jobs—won't come close to making up for the nearly six million lost since 1997. But manufacturing should be at least a modest contributor to total U.S. employment in the next couple of years, these economists say.
After a steep slump during the recession, manufacturing is "the shining star of this recovery," says Thomas Runiewicz, an economist at IHS. He expects total U.S. manufacturing jobs this year to rise to about 12 million. Currently, manufacturing jobs account for about 9% of all U.S. nonfarm jobs; the average pay for those jobs is roughly $22 an hour, or nearly twice the average for service jobs, according to government data.
[FACTORY-A1]
Despite the upbeat forecasts, job growth may remain modest because many companies are finding ways to increase production through greater efficiency and automation, without adding many workers. In the third quarter, U.S. manufacturing productivity increased as output rose 7.1% from a year earlier and hours worked grew just 3%. Conrad Winkler, a vice president at the consulting firm Booz & Co. who focuses on manufacturing, says manufacturers are being very cautious in their hiring, partly to avoid the risk of having to lay off people later on.
"Manufacturing is going to be a significant source of job growth over the next decade," says Mark Zandi, chief economist at Moody's Analytics. He says U.S. manufacturers that survived the brutal 2008-09 recession are now very competitive, with much lower labor costs and debt burdens, and so can afford to expand. While they will keep building factories overseas to address demand in emerging markets, they also will invest in U.S. plants, Mr. Zandi says. He expects manufacturing job growth to average about 2% a year through 2015.

Factory Floor

Business investment may help bolster manufacturing.
The job growth is expected as companies replace aging equipment, take advantage of government incentives, seek energy savings and rediscover that it makes sense to produce some products, such as ovens and construction machinery, at home rather than shipping them long distances. A new tax break, approved by Congress in December, is expected to further stimulate investment by letting companies deduct from taxable income 100% of certain types of investments in 2011.
Whirlpool Corp., which has 39 factories world-wide, including nine in the U.S., had a tough decision to make last year. Parts of its oven and cooktop factory complex in Cleveland, Tenn., are more than 100 years old. The labyrinthine layout of the plant, built on a slope and cobbled together over the past century, requires a fleet of more than 100 forklifts to shuttle products along ramps connecting 13 different levels. Temperatures sometimes top 100 degrees inside the plant, which has no air conditioning. Alan Holaday, who heads North American manufacturing for Whirlpool, calls the plant "an industrial museum."
Alex McMahan for The Wall Street Journal
Melissa Hayes and Brandon Epperson assemble an oven at the Whirlpool plant in Cleveland, Tenn., Tuesday.
One obvious option was to move production of the cooking appliances to Mexico, where Whirlpool already has several factories and where its South Korean rivals make some of their cooking products. But, after months of study, Whirlpool decided in mid-2010 to spend $120 million on a new plant in Cleveland, a few miles from the old one, in what will be the company's first new U.S. factory since the mid-1990s. Whirlpool projects that its work force in Cleveland will grow to 1,630 within about two years from 1,500 now as production increases.
Although labor costs would be lower in Mexico, Whirlpool found lots of reasons to stay in the Cleveland area. It already had a trained work force there and wouldn't need to pay severance costs. Freight costs would be lower since most of the plant's products are sold in the U.S. Tennessee also looked safer than Mexico, which has been beset with drug-related violence. And state and local governments were willing to kick in about $30 million of incentives—including grants and property tax breaks—if Whirlpool stayed in the area. Most of the new jobs at the Whirlpool plant will be for assemblers, a spokeswoman said.
Caterpillar Inc. is building a $120 million plant to make excavator machines in Victoria, Texas. The plant will produce some machines that currently were being shipped from a Caterpillar plant in Japan to North American customers. That means the North American customers will get faster deliveries, and the Japan plant can devote more capacity to the booming Asian market. In return for creating 500 jobs in Texas, Caterpillar also got incentives from state and local authorities, including tax breaks and 320 acres of free land. Those jobs will include assemblers, engineers and logistics experts.
Dow Chemical Co. is building a 800,000-square-foot plant near its headquarters in Midland, Mich., to design and make batteries for hybrid and electric vehicles. In addition, Dow aims to expand a pilot project, also in Midland, in which it is making solar roof shingles that generate electricity. Such spending also creates jobs at suppliers. Dow cites estimates that every new job inside a chemical plant creates five jobs at suppliers and other related firms.
All of this doesn't herald a miracle recovery for manufacturing, which accounted for 11% of U.S. economic output in 2009, down from 27% in 1950. In a new book, Dow Chemical CEO Andrew Liveris, argues that U.S. manufacturing faces continued decline unless the government comes up with a strategy to boost it, including bigger tax breaks and government support for R&D.
Another risk is that manufacturing jobs will start to vanish again if the U.S. economy can't sustain its current recovery and slips back into recession. Still, rising industrial production and capital investments are signs that manufacturing will remain a significant part of the U.S. economy at least in the near term.

Mechanical engineering


 
  

mechanical engineering




mechanical engineering

I'll just let the man himself explain how he got this giant beast to move:
The machine is powered by a 454 cubic inch chevy V-8 married to a modified TH400 trans coupled to two klune extreme under drive planetary gear boxes, uses a rockwell 2 1/2 ton military axle to supply power to the leg crank shafts, The final drive ratio is 125:1. The legs are supported on a 4 link system and uses 56 pivot points and 114 bearings..
It can also hold eight people and includes a freaking elevator to get individuals into the cockpit (?). It's 11 feet tall, eight feet wide and includes a roll cage just in case a giant lizard attempts to fight the spider and rolls it over. There is no word on just how fast this beast can go, as MOLTENSTEELMAN says the bugs have yet to be worked out to determine that figure.
Now what would be truly awesome is if it stored miniature spider walkers that could deploy on the fly like a escape pods. [Walking Beast via Gizmowatch]
Contact information for this author is not available.
 

mechanical engineering

MECHANICAL ENGINEERING MAGAZINE PROJECT CROWDSOURCING INITIATIVE
The magazine is embarking on a unique 12-month initiative called Project Crowdsourcing. The end result will be that readers will determine the content of the December 2011 issue.
Related: Mechanical Engineering Magazine Online

ASME Membership BenefitsASME provides members only discounts on technical benefits like short courses and journals; personal benefits, like insurance; plus career advice and job listings in mechanical engineering.
From the PresidentASME President Robert T. Simmons looks at trends in transportation that relate to the growing need for electricity and are part of the energy strategy that ASME is pursuing.
History & Heritage NewsletterThe History & Heritage Newsletter aims to empower Sections with tools and information that can be used to create effective history and heritage programs.  This second edition covers the creation of an inventory of the mechanical engineering accomplishments that have occurred in your area.
Related: ASME History Center
2011 ASME Arthur L. Williston Award Contest
The Arthur L. Williston Award is presented for the best paper submitted in the annual competition on a subject chosen to challenge the engineering abilities of engineering students. This year’s topic is entitled: “How will your Mechanical Engineering Design Project Benefit Society?”

ASME Training & Development Spring 2011 Course Calendar Now Available
Download the Spring 2011 ASME Training & Development Course Calendar listing dates and locations of Live and Distance Learning course offerings through June 2011.
Related: Learn more about ASME Training & Development

FutureME for Early Career EngineersASME has launched a new site designed for Early Career Engineers. Get everything you need to accelerate your career and engineer your future. Discover career tools and support, make connections, find job opportunities, keep up with news and trends, access volunteer opportunities. It’s all in one place - FutureME.
Guaranteed Slot on the Starting Grid for the Indianapolis Motor Speedway in May!
It’s not the Indianapolis 500, but students who want to try out the Indianapolis Motor Speedway can have their chance at this year’s ASME Human Powered Vehicle Competition (HPVC-East), April 29 - May 1.  What could be better -- The Rocky Mountains!  Join us May 13-15 at the HPVC-West competition in beautiful Bozeman, Montana.

mechanical engineering



mechanical engineering





mechanical engineering




what is the meaning of mechanical engineering?



 


Mechanical engineering is a discipline of engineering that applies the principles of physics and materials science for analysis, design, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the production and usage of heat and mechanical power for the design, production, and operation of machines and tools.[1] It is one of the oldest and broadest engineering disciplines.
The engineering field requires a vast understanding of core concepts including mechanics, kinematics, thermodynamics, materials science, and structural analysis. Mechanical engineers use these core principles along with tools like computer-aided engineering and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, motorized vehicles, aircraft, watercraft, robotics, medical devices and more.
Mechanical engineering emerged as a field during the industrial revolution in Europe in the 19th century; however, its development can be traced back several thousand years around the world. The field has continually evolved to incorporate advancements in technology, and mechanical engineers today are pursuing developments in such fields as composites, mechatronics, and nanotechnology. Mechanical engineering overlaps with aerospace engineering, civil engineering, electrical engineering, and petroleum engineering to varying amounts.
 
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Development

Applications of mechanical engineering are found in the records of many ancient and medieval societies throughout the globe. In ancient Greece, the works of Archimedes (287 BC–212 BC) deeply influenced mechanics in the Western tradition and Heron of Alexandria (c. 10–70 AD) created the first steam engine.[2] In China, Zhang Heng (78–139 AD) improved a water clockseismometer, and Ma Jun (200–265 AD) invented a chariot with differentialSu Song (1020–1101 AD) incorporated an escapement mechanism into his astronomical clock tower two centuries before any escapement can be found in clocks of medieval Europe, as well as the world's first known endless power-transmitting chain drive.[3] and invented a gears. The medieval Chinese horologist and engineer
During the years from 7th to 15th century, the era called the Islamic Golden Age, there have been remarkable contributions from Muslim inventors in the field of mechanical technology. Al-Jazari, who was one of them, wrote his famous Book of Knowledge of Ingenious Mechanical Devices in 1206, and presented many mechanical designs. He is also considered to be the inventor of such mechanical devices which now form the very basic of mechanisms, such as the crankshaft and camshaft.[4]
Important breakthroughs in the foundations of mechanical engineering occurred in England during the 17th century when Sir Isaac Newton both formulated the three Newton's Laws of Motion and developed calculus. Newton was reluctant to publish his methods and laws for years, but he was finally persuaded to do so by his colleagues, such as Sir Edmund Halley, much to the benefit of all mankind.
During the early 19th century in England, Germany and Scotland, the development of machine tools led mechanical engineering to develop as a separate field within engineering, providing manufacturing machines and the engines to power them.[5] The first British professional society of mechanical engineers was formed in 1847 Institution of Mechanical Engineers, thirty years after the civil engineers formed the first such professional society Institution of Civil Engineers.[6] On the European continent, Johann Von Zimmermann (1820–1901) founded the first factory for grinding machines in Chemnitz (Germany) in 1848.
In the United States, the American Society of Mechanical Engineers (ASME) was formed in 1880, becoming the third such professional engineering society, after the American Society of Civil Engineers (1852) and the American Institute of Mining Engineers (1871).[7] The first schools in the United States to offer an engineering education were the United States Military Academy in 1817, an institution now known as Norwich University in 1819, and Rensselaer Polytechnic Institute in 1825. Education in mechanical engineering has historically been based on a strong foundation in mathematics and science.[8]

Education

Degrees in mechanical engineering are offered at universities worldwide. In Bangladesh, China, India, Nepal, North America, and Pakistan, mechanical engineering programs typically take four to five years of study and result in a Bachelor of Science (B.Sc), Bachelor of Technology (B.Tech), Bachelor of Engineering (B.Eng), or Bachelor of Applied Science (B.A.Sc) degree, in or with emphasis in mechanical engineering. In Spain, Portugal and most of South America, where neither BSc nor BTech programs have been adopted, the formal name for the degree is "Mechanical Engineer", and the course work is based on five or six years of training. In Italy the course work is based on five years of training; but in order to qualify as an Engineer you have to pass a state exam at the end of the course.
In Australia, mechanical engineering degrees are awarded as Bachelor of Engineering (Mechanical). The degree takes four years of full time study to achieve. To ensure quality in engineering degrees, the Australian Institution of Engineers accredits engineering degrees awarded by Australian universities. Before the degree can be awarded, the student must complete at least 3 months of on the job work experience in an engineering firm.
In the United States, most undergraduate mechanical engineering programs are accreditedAccreditation Board for Engineering and Technology (ABET) to ensure similar course requirements and standards among universities. The ABET web site lists 276 accredited mechanical engineering programs as of June 19, 2006.[9] Mechanical engineering programs in Canada are accredited by the Canadian Engineering Accreditation Board (CEAB),[10] and most other countries offering engineering degrees have similar accreditation societies. by the
Some mechanical engineers go on to pursue a postgraduate degree such as a Master of Engineering, Master of Technology, Master of Science, Master of Engineering ManagementDoctor of Philosophy in engineering (EngD, PhD) or an engineer's degree. The master's and engineer's degrees may or may not include research. The Doctor of Philosophy includes a significant research component and is often viewed as the entry point to academia.[11] The Engineer's degree exists at a few institutions at an intermediate level between the master's degree and the doctorate. (MEng.Mgt or MEM), a

Coursework

Standards set by each country's accreditation society are intended to provide uniformity in fundamental subject material, promote competence among graduating engineers, and to maintain confidence in the engineering profession as a whole. Engineering programs in the U.S., for example, are required by ABET to show that their students can "work professionally in both thermal and mechanical systems areas."[12] The specific courses required to graduate, however, may differ from program to program. Universities and Institutes of technology will often combine multiple subjects into a single class or split a subject into multiple classes, depending on the faculty available and the university's major area(s) of research.
The fundamental subjects of mechanical engineering usually include:
Mechanical engineers are also expected to understand and be able to apply basic concepts from chemistry, physics, chemical engineering, civil engineering, and electrical engineering. Most mechanical engineering programs include multiple semesters of calculus, as well as advanced mathematical concepts including differential equations, partial differential equations, linear algebra, abstract algebra, and differential geometry, among others.
In addition to the core mechanical engineering curriculum, many mechanical engineering programs offer more specialized programs and classes, such as robotics, transport and logistics, cryogenics, fuel technology, automotive engineering, biomechanics, vibration, optics[15] and others, if a separate department does not exist for these subjects.
Most mechanical engineering programs also require varying amounts of research or community projects to gain practical problem-solving experience. In the United States it is common for mechanical engineering students to complete one or more internships while studying, though this is not typically mandated by the university. Cooperative education is another option.

License

Engineers may seek license by a state, provincial, or national government. The purpose of this process is to ensure that engineers possess the necessary technical knowledge, real-world experience, and knowledge of the local legal system to practice engineering at a professional level. Once certified, the engineer is given the title of Professional Engineer (in the United States, Canada, Japan, South Korea, Bangladesh and South Africa), Chartered Engineer (in the United Kingdom, Ireland, India and Zimbabwe), Chartered Professional Engineer (in Australia and New Zealand) or European Engineer (much of the European Union). Not all mechanical engineers choose to become licensed; those that do can be distinguished as Chartered or Professional Engineers by the post-nominal title P.E., P.Eng., or C.Eng., as in: Mike Thompson, P.Eng.
In the U.S., to become a licensed Professional Engineer, an engineer must pass the comprehensive FE (Fundamentals of Engineering) exam, work a given number of years as an Engineering Intern (EI) or Engineer-in-Training (EIT), and finally pass the "Principles and Practice" or PE (Practicing Engineer or Professional Engineer) exams.
In the United States, the requirements and steps of this process are set forth by the National Council of Examiners for Engineering and Surveying (NCEES), a national non-profit representing all states. In the UK, current graduates require a BEng plus an appropriate masters degree or an integrated MEng degree, a minimum of 4 years post graduate on the job competency development, and a peer reviewed project report in the candidates specialty area in order to become chartered through the Institution of Mechanical Engineers.
In most modern countries, certain engineering tasks, such as the design of bridges, electric power plants, and chemical plants, must be approved by a Professional Engineer or a Chartered Engineer. "Only a licensed engineer, for instance, may prepare, sign, seal and submit engineering plans and drawings to a public authority for approval, or to seal engineering work for public and private clients."[16] This requirement can be written into state and provincial legislation, such as in the Canadian provinces, for example the Ontario or Quebec's Engineer Act.[17]
In other countries, such as Australia, no such legislation exists; however, practically all certifying bodies maintain a code of ethics independent of legislation that they expect all members to abide by or risk expulsion.[18]

Salaries and workforce statistics

The total number of engineers employed in the U.S. in 2009 was roughly 1.6 million. Of these, 239,000 were mechanical engineers (14.9%), the second largest discipline by size behind civil (278,000). The total number of mechanical engineering jobs in 2009 was projected to grow 6% over the next decade, with average starting salaries being $58,800 with a bachelor's degree.[19] The median annual income of mechanical engineers in the U.S. workforce was roughly $74,900. This number was highest when working for the government ($86,250), and lowest in education ($63,050).[20]
In 2007, Canadian engineers made an average of CAD$29.83 per hour with 4% unemployed. The average for all occupations was $18.07 per hour with 7% unemployed. Twelve percent of these engineers were self-employed, and since 1997 the proportion of female engineers had risen to 6%.[21]

Modern tools

An oblique view of a four-cylinder inline crankshaft with pistons
Many mechanical engineering companies, especially those in industrialized nations, have begun to incorporate computer-aided engineering (CAE) programs into their existing design and analysis processes, including 2D and 3D solid modeling computer-aided design (CAD). This method has many benefits, including easier and more exhaustive visualization of products, the ability to create virtual assemblies of parts, and the ease of use in designing mating interfaces and tolerances.
Other CAE programs commonly used by mechanical engineers include product lifecycle management (PLM) tools and analysis tools used to perform complex simulations. Analysis tools may be used to predict product response to expected loads, including fatigue life and manufacturability. These tools include finite element analysis (FEA), computational fluid dynamics (CFD), and computer-aided manufacturing (CAM).
Using CAE programs, a mechanical design team can quickly and cheaply iterate the design process to develop a product that better meets cost, performance, and other constraints. No physical prototype need be created until the design nears completion, allowing hundreds or thousands of designs to be evaluated, instead of a relative few. In addition, CAE analysis programs can model complicated physical phenomena which cannot be solved by hand, such as viscoelasticity, complex contact between mating parts, or non-Newtonian flows
As mechanical engineering begins to merge with other disciplines, as seen in mechatronics, multidisciplinary design optimization (MDO) is being used with other CAE programs to automate and improve the iterative design process. MDO tools wrap around existing CAE processes, allowing product evaluation to continue even after the analyst goes home for the day. They also utilize sophisticated optimization algorithms to more intelligently explore possible designs, often finding better, innovative solutions to difficult multidisciplinary design problems.

Subdisciplines

The field of mechanical engineering can be thought of as a collection of many mechanical disciplines. Several of these subdisciplines which are typically taught at the undergraduate level are listed below, with a brief explanation and the most common application of each. Some of these subdisciplines are unique to mechanical engineering, while others are a combination of mechanical engineering and one or more other disciplines. Most work that a mechanical engineer does uses skills and techniques from several of these subdisciplines, as well as specialized subdisciplines. Specialized subdisciplines, as used in this article, are more likely to be the subject of graduate studies or on-the-job training than undergraduate research. Several specialized subdisciplines are discussed in this section.

Mechanics

Mohr's circle, a common tool to study stresses in a mechanical element
Mechanics is, in the most general sense, the study of forces and their effect upon matter. Typically, engineering mechanics is used to analyze and predict the acceleration and deformation (both elastic and plastic) of objects under known forces (also called loads) or stresses. Subdisciplines of mechanics include
Mechanical engineers typically use mechanics in the design or analysis phases of engineering. If the engineering project were the design of a vehicle, statics might be employed to design the frame of the vehicle, in order to evaluate where the stresses will be most intense. Dynamics might be used when designing the car's engine, to evaluate the forces in the pistonscams as the engine cycles. Mechanics of materials might be used to choose appropriate materials for the frame and engine. Fluid mechanics might be used to design a ventilation system for the vehicle (see HVAC), or to design the intake system for the engine. and

Kinematics

Kinematics is the study of the motion of bodies (objects) and systems (groups of objects), while ignoring the forces that cause the motion. The movement of a crane and the oscillations of a piston in an engine are both simple kinematic systems. The crane is a type of open kinematic chain, while the piston is part of a closed four-bar linkage.
Mechanical engineers typically use kinematics in the design and analysis of mechanisms. Kinematics can be used to find the possible range of motion for a given mechanism, or, working in reverse, can be used to design a mechanism that has a desired range of motion.

Mechatronics and robotics

Training FMS with learning robot SCORBOT-ER 4u, workbench CNC Mill and CNC Lathe
Mechatronics is an interdisciplinary branch of mechanical engineering, electrical engineeringsoftware engineering that is concerned with integrating electrical and mechanical engineering to create hybrid systems. In this way, machines can be automated through the use of electric motors, servo-mechanisms, and other electrical systems in conjunction with special software. A common example of a mechatronics system is a CD-ROM drive. Mechanical systems open and close the drive, spin the CD and move the laser, while an optical system reads the data on the CD and converts it to bits. Integrated software controls the process and communicates the contents of the CD to the computer. and
Robotics is the application of mechatronics to create robots, which are often used in industry to perform tasks that are dangerous, unpleasant, or repetitive. These robots may be of any shape and size, but all are preprogrammed and interact physically with the world. To create a robot, an engineer typically employs kinematics (to determine the robot's range of motion) and mechanics (to determine the stresses within the robot).
Robots are used extensively in industrial engineering. They allow businesses to save money on labor, perform tasks that are either too dangerous or too precise for humans to perform them economically, and to insure better quality. Many companies employ assembly lines of robots, and some factories are so robotized that they can run by themselves. Outside the factory, robots have been employed in bomb disposal, space exploration, and many other fields. Robots are also sold for various residential applications.

Structural analysis

Structural analysis is the branch of mechanical engineering (and also civil engineering) devoted to examining why and how objects fail and to fix the objects and their performance. Structural failures occur in two general modes: static failure, and fatigue failure. Static structural failure occurs when, upon being loaded (having a force applied) the object being analyzed either breaks or is deformed plastically, depending on the criterion for failure. Fatigue failure occurs when an object fails after a number of repeated loading and unloading cycles. Fatigue failure occurs because of imperfections in the object: a microscopic crack on the surface of the object, for instance, will grow slightly with each cycle (propagation) until the crack is large enough to cause ultimate failure.
Failure is not simply defined as when a part breaks, however; it is defined as when a part does not operate as intended. Some systems, such as the perforated top sections of some plastic bags, are designed to break. If these systems do not break, failure analysis might be employed to determine the cause.
Structural analysis is often used by mechanical engineers after a failure has occurred, or when designing to prevent failure. Engineers often use online documents and books such as those published by ASM[23] to aid them in determining the type of failure and possible causes.
Structural analysis may be used in the office when designing parts, in the field to analyze failed parts, or in laboratories where parts might undergo controlled failure tests.

Thermodynamics and thermo-science

Thermodynamics is an applied science used in several branches of engineering, including mechanical and chemical engineering. At its simplest, thermodynamics is the study of energy, its use and transformation through a system. Typically, engineering thermodynamics is concerned with changing energy from one form to another. As an example, automotive engines convert chemical energy (enthalpy) from the fuel into heat, and then into mechanical work that eventually turns the wheels.
Thermodynamics principles are used by mechanical engineers in the fields of heat transfer, thermofluids, and energy conversion. Mechanical engineers use thermo-science to design engines and power plants, heating, ventilation, and air-conditioning (HVAC) systems, heat exchangers, heat sinks, radiators, refrigeration, insulation, and others.

Drafting

A CAD model of a mechanical double seal
Drafting or technical drawing is the means by which mechanical engineers create instructions for manufacturing parts. A technical drawing can be a computer model or hand-drawn schematic showing all the dimensions necessary to manufacture a part, as well as assembly notes, a list of required materials, and other pertinent information. A U.S. mechanical engineer or skilled worker who creates technical drawings may be referred to as a drafter or draftsman. Drafting has historically been a two-dimensional process, but computer-aided design (CAD) programs now allow the designer to create in three dimensions.
Instructions for manufacturing a part must be fed to the necessary machinery, either manually, through programmed instructions, or through the use of a computer-aided manufacturing (CAM) or combined CAD/CAM program. Optionally, an engineer may also manually manufacture a part using the technical drawings, but this is becoming an increasing rarity, with the advent of computer numerically controlled (CNC) manufacturing. Engineers primarily manually manufacture parts in the areas of applied spray coatings, finishes, and other processes that cannot economically or practically be done by a machine.
Drafting is used in nearly every subdiscipline of mechanical engineering, and by many other branches of engineering and architecture. Three-dimensional models created using CAD software are also commonly used in finite element analysis (FEA) and computational fluid dynamics (CFD).

Frontiers of research

Mechanical engineers are constantly pushing the boundaries of what is physically possible in order to produce safer, cheaper, and more efficient machines and mechanical systems. Some technologies at the cutting edge of mechanical engineering are listed below (see also exploratory engineering).

Micro electro-mechanical systems (MEMS)

Micron-scale mechanical components such as springs, gears, fluidic and heat transfer devices are fabricated from a variety of substrate materials such as silicon, glass and polymers like SU8. Examples of MEMS components will be the accelerometers that are used as car airbag sensors, modern cell phones, gyroscopes for precise positioning and microfluidic devices used in biomedical applications.

Friction stir welding (FSW)

Friction stir welding, a new type of welding, was discovered in 1991 by The Welding Institutealuminum alloys. It may play an important role in the future construction of airplanes, potentially replacing rivets. Current uses of this technology to date include welding the seams of the aluminum main Space Shuttle external tank, Orion Crew Vehicle test article, Boeing Delta II and Delta IV Expendable Launch Vehicles and the SpaceX Falcon 1 rocket, armor plating for amphibious assault ships, and welding the wings and fuselage panels of the new Eclipse 500 aircraft from Eclipse Aviation among an increasingly growing pool of uses.[24][25][26] (TWI). This innovative steady state (non-fusion) welding technique joins materials previously un-weldable, including several

Composites

Composite cloth consisting of woven carbon fiber.
Composites or composite materials are a combination of materials which provide different physical characteristics than either material separately. Composite material research within mechanical engineering typically focuses on designing (and, subsequently, finding applications for) stronger or more rigid materials while attempting to reduce weight, susceptibility to corrosion, and other undesirable factors. Carbon fiber reinforced composites, for instance, have been used in such diverse applications as spacecraft and fishing rods.

Mechatronics

Mechatronics is the synergistic combination of mechanical engineering, Electronic Engineering, and software engineering. The purpose of this interdisciplinary engineering field is the study of automata from an engineering perspective and serves the purposes of controlling advanced hybrid systems.

Nanotechnology

At the smallest scales, mechanical engineering becomes nanotechnology —one speculative goal of which is to create a molecular assembler to build molecules and materials via mechanosynthesis. For now that goal remains within exploratory engineering.

Finite element analysis

This field is not new, as the basis of Finite Element Analysis (FEA) or Finite Element Method (FEM) dates back to 1941. But evolution of computers has made FEM a viable option for analysis of structural problems. Many commercial codes such as ANSYS, Nastran and ABAQUS are widely used in industry for research and design of components.
Other techniques such as finite difference method (FDM) and finite-volume method (FVM) are employed to solve problems relating heat and mass transfer, fluid flows, fluid surface interaction etc.

Related fields

Manufacturing engineering and Aerospace Engineering are sometimes grouped with mechanical engineering. A bachelor's degree in these areas will typically have a difference of a few specialized classes.

See also


Associations

Wikibooks

Notes and references

  1. ^ engineering "mechanical engineering. (n.d.)". The American Heritage Dictionary of the English Language, Fourth Edition. Retrieved: May 08, 2010.
  2. ^ "Heron of Alexandria". Encyclopædia Britannica 2010 - Encyclopædia Britannica Online. Accessed: 09 May 2010.
  3. ^ Needham, Joseph (1986). Science and Civilization in China: Volume 4. Taipei: Caves Books, Ltd.
  4. ^ Al-Jazarí. The Book of Knowledge of Ingenious Mechanical Devices: Kitáb fí ma'rifat al-hiyal al-handasiyya. Springer, 1973. ISBN 9027703299.
  5. ^ Engineering - Encyclopedia Brittanica, accessed 06 May 2008
  6. ^ R. A. Buchanan. The Economic History Review, New Series, Vol. 38, No. 1 (Feb., 1985), pp. 42–60.
  7. ^ ASME history, accessed 06 May 2008.
  8. ^ The Columbia Encyclopedia, Sixth Edition. 2001-07, engineering, accessed 06 May 2008
  9. ^ ABET searchable database of accredited engineering programs, Accessed June 19, 2006.
  10. ^ Accredited engineering programs in Canada by the Canadian Council of Professional Engineers, Accessed April 18, 2007.
  11. ^ Types of post-graduate degrees offered at MIT - Accessed 19 June 2006.
  12. ^ 2008-2009 ABET Criteria, p. 15.
  13. ^ University of Tulsa Required ME Courses - Undergraduate Majors and Minors. Department of Mechanical Engineering, University of Tulsa, 2010. Accessed: 17 December 2010.
  14. ^ Harvard Mechanical Engineering Page. Harvard.edu. Accessed: 19 June 2006.
  15. ^ Mechanical Engineering courses, MIT. Accessed 14 June 2008.
  16. ^ "Why Get Licensed?". National Society of Professional Engineers. http://www.nspe.org/Licensure/WhyGetLicensed/index.html. Retrieved May 6, 2008. 
  17. ^ "Engineers Act". Quebec Statutes and Regulations (CanLII). http://www.canlii.org/qc/laws/sta/i-9/20050616/whole.html. Retrieved July 24, 2005. 
  18. ^ "Codes of Ethics and Conduct". Online Ethics Center. Archived from the original on June 19, 2005. http://web.archive.org/web/20050619081942/http://onlineethics.org/codes/. Retrieved July 24, 2005. 
  19. ^ 2010-11 Edition, Engineers - Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook, Accessed: 9 May 2010.
  20. ^ Document National Sector NAICS Industry-Specific estimates (xls) Accessed: 9 May 2010.
  21. ^ Mechanical Engineers - Jobfutures.ca, Accessed: June 30, 2007.
  22. ^ Note: fluid mechanics can be further split into fluid statics and fluid dynamics, and is itself a subdiscipline of continuum mechanics. The application of fluid mechanics in engineering is called hydraulics and pneumatics.
  23. ^ ASM International's site containing more than 20,000 searchable documents, including articles from the ASM Handbook series and Advanced Materials & Processes
  24. ^ Advances in Friction Stir Welding for Aerospace Applications
  25. ^ PROPOSAL NUMBER: 08-1 A1.02-9322 - NASA 2008 SBIR
  26. ^ Nova-Tech LLC