The Info List - Mechanical Engineering

--- Advertisement ---

Mechanical Engineering
is the discipline that applies engineering, physics, and materials science principles to design, analyze, manufacture, and maintain mechanical systems. It is one of the oldest and broadest of the engineering disciplines. The mechanical engineering field requires an understanding of core areas including mechanics, dynamics, thermodynamics, materials science, structural analysis, and electricity. In addition to these core principles, mechanical engineers use tools such as computer-aided design (CAD), computer-aided manufacturing (CAM), and product life cycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others. It is the branch of engineering that involves the design, production, and operation of machinery.[1][2] Mechanical engineering
Mechanical engineering
emerged as a field during the Industrial Revolution in Europe in the 18th century; however, its development can be traced back several thousand years around the world. In the 19th century, developments in physics led to the development of mechanical engineering science. The field has continually evolved to incorporate advancements; today mechanical engineers are pursuing developments in such areas as composites, mechatronics, and nanotechnology. It also overlaps with aerospace engineering, metallurgical engineering, civil engineering, electrical engineering, manufacturing engineering, chemical engineering, industrial engineering, and other engineering disciplines to varying amounts. Mechanical engineers may also work in the field of biomedical engineering, specifically with biomechanics, transport phenomena, biomechatronics, bionanotechnology, and modeling of biological systems.

W16 engine
W16 engine
of the Bugatti Veyron. Mechanical engineers design engines, power plants, other machines...

...structures, and vehicles of all sizes.


1 History 2 Education

2.1 Coursework 2.2 License and regulation

3 Job duties 4 Salaries and workforce statistics 5 Modern tools 6 Subdisciplines

6.1 Mechanics 6.2 Mechatronics
and robotics 6.3 Structural analysis 6.4 Thermodynamics
and thermo-science 6.5 Design
and drafting

7 Areas of research

7.1 Micro electro-mechanical systems (MEMS) 7.2 Friction stir welding
Friction stir welding
(FSW) 7.3 Composites 7.4 Mechatronics 7.5 Nanotechnology 7.6 Finite element analysis 7.7 Biomechanics 7.8 Computational fluid dynamics 7.9 Acoustical engineering

8 Related fields 9 See also 10 Notes and references 11 Further reading 12 External links

History[edit] The application of mechanical engineering can be seen in the archives of various ancient and medieval societies. In ancient Greece, the works of Archimedes
(287–212 BC) influenced mechanics in the Western tradition and Heron of Alexandria (c. 10–70 AD) created the first steam engine (Aeolipile).[3] In China, Zhang Heng
Zhang Heng
(78–139 AD) improved a water clock and invented a seismometer, and Ma Jun (200–265 AD) invented a chariot with differential gears. The medieval Chinese horologist and engineer Su Song
Su Song
(1020–1101 AD) incorporated an escapement mechanism into his astronomical clock tower two centuries before escapement devices were found in medieval European clocks. He also invented the world's first known endless power-transmitting chain drive.[4] During the Islamic Golden Age
Islamic Golden Age
(7th to 15th century), Muslim inventors made remarkable contributions 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.[5] During the 17th century, important breakthroughs in the foundations of mechanical engineering occurred in England. Sir Isaac Newton formulated Newton's Laws of Motion
Newton's Laws of Motion
and developed Calculus, the mathematical basis of physics. Newton was reluctant to publish his works for years, but he was finally persuaded to do so by his colleagues, such as Sir Edmond Halley, much to the benefit of all mankind. Gottfried Wilhelm Leibniz
Gottfried Wilhelm Leibniz
is also credited with creating Calculus
during this time period. During the early 19th century industrial revolution, machine tools were developed in England, Germany, and Scotland. This allowed mechanical engineering to develop as a separate field within engineering. They brought with them manufacturing machines and the engines to power them.[6] 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.[7] 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).[8] 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
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.[9] Education[edit]

Archimedes' screw
Archimedes' screw
was operated by hand and could efficiently raise water, as the animated red ball demonstrates.

Degrees in mechanical engineering are offered at various universities worldwide; in Ireland, Brazil, Philippines, Pakistan, China, Greece, Turkey, North America, South Asia, Nepal, India, Dominican Republic, Iran and the United Kingdom, mechanical engineering programs typically take four to five years of study and result in a Bachelor of Engineering
(B.Eng. or B.E.), Bachelor of Science
(B.Sc. or B.S.), Bachelor of Science
(B.Sc.Eng.), Bachelor of Technology (B.Tech.), Bachelor of Mechanical Engineering
(B.M.E.), 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 B.Sc. nor B.Tech. 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 education, and training, but in order to qualify as an Engineer one has to pass a state exam at the end of the course. In Greece, the coursework is based on a five-year curriculum and the requirement of a 'Diploma' Thesis, which upon completion a 'Diploma' is awarded rather than a B.Sc. In Australia, mechanical engineering degrees are awarded as Bachelor of Engineering
(Mechanical) or similar nomenclature[10] although there are an increasing number of specialisations. The degree takes four years of full-time study to achieve. To ensure quality in engineering degrees, Engineers Australia
accredits engineering degrees awarded by Australian universities in accordance with the global Washington Accord. Before the degree can be awarded, the student must complete at least 3 months of on the job work experience in an engineering firm. Similar systems are also present in South Africa and are overseen by the Engineering
Council of South Africa (ECSA). In the United States, most undergraduate mechanical engineering programs are accredited by the Accreditation Board for Engineering
and Technology
(ABET) to ensure similar course requirements and standards among universities. The ABET web site lists 302 accredited mechanical engineering programs as of 11 March 2014.[11] Mechanical engineering programs in Canada are accredited by the Canadian Engineering Accreditation Board (CEAB),[12] and most other countries offering engineering degrees have similar accreditation societies. In India, to become an engineer, one needs to have an engineering degree like a B.Tech or B.E, have a diploma in engineering, or by completing a course in an engineering trade like fitter from the Industrial Training Institute
Industrial Training Institute
(ITIs) to receive a "ITI Trade Certificate" and also pass the All India Trade Test (AITT) with an engineering trade conducted by the National Council of Vocational Training (NCVT) by which one is awarded a "National Trade Certificate". A similar system is used in Nepal. 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
Management (M.Eng.Mgt. or M.E.M.), a Doctor of Philosophy in engineering (Eng.D. or Ph.D.) or an engineer's degree. The master's and engineer's degrees may or may not include research. The Doctor of Philosophy
Doctor of Philosophy
includes a significant research component and is often viewed as the entry point to academia.[13] The Engineer's degree exists at a few institutions at an intermediate level between the master's degree and the doctorate. Coursework[edit] 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."[14] 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:

(in particular, calculus, differential equations, and linear algebra) Basic physical sciences (including physics and chemistry) Statics and dynamics Strength of materials
Strength of materials
and solid mechanics Materials Engineering, Composites Thermodynamics, heat transfer, energy conversion, and HVAC Fuels, combustion, Internal combustion engine Fluid mechanics
Fluid mechanics
(including fluid statics and fluid dynamics) Mechanism and Machine
design (including kinematics and dynamics) Instrumentation
and measurement Manufacturing engineering, technology, or processes Vibration, control theory and control engineering Hydraulics, and pneumatics Mechatronics, and robotics Engineering
design and product design Drafting, computer-aided design (CAD) and computer-aided manufacturing (CAM)[15][16]

Mechanical engineers are also expected to understand and be able to apply basic concepts from chemistry, physics, chemical engineering, civil engineering, and electrical engineering. All mechanical engineering programs include multiple semesters of mathematical classes including calculus, and 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 control systems, robotics, transport and logistics, cryogenics, fuel technology, automotive engineering, biomechanics, vibration, optics and others, if a separate department does not exist for these subjects.[17] 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. Future work skills[18] research puts demand on study components that feed student's creativity and innovation.[19] License and regulation[edit] 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), or Professional Engineer in Philippines
and Pakistan. In the U.S., to become a licensed Professional Engineer (PE), an engineer must pass the comprehensive FE (Fundamentals of Engineering) exam, work a minimum of 4 years as an Engineering
Intern (EI) or Engineer-in-Training (EIT), and pass the "Principles and Practice" or PE (Practicing Engineer or Professional Engineer) exams. The requirements and steps of this process are set forth by the National Council of Examiners for Engineering
and Surveying (NCEES), a composed of engineering and land surveying licensing boards representing all U.S. states and territories. In the UK, current graduates require a BEng plus an appropriate master's 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 a Chartered Mechanical Engineer (CEng, MIMechE) through the Institution of Mechanical Engineers. CEng MIMechE can also be obtained via an examination route administered by the City and Guilds of London Institute.[citation needed] In most developed 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."[20] 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.[21] In other countries, such as Australia, and the UK, 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.[22] Further information: FE Exam, Professional Engineer, Incorporated Engineer, and Washington Accord Job duties[edit] Mechanical engineers research, design, develop, build, and test mechanical and thermal devices, including tools, engines, and machines. Mechanical engineers typically do the following:

Analyze problems to see how mechanical and thermal devices might help solve the problem. Design
or redesign mechanical and thermal devices using analysis and computer-aided design. Develop and test prototypes of devices they design. Analyze the test results and change the design as needed. Oversee the manufacturing process for the device.

Mechanical engineers design and oversee the manufacturing of many products ranging from medical devices to new batteries. They also design power-producing machines such as electric generators, internal combustion engines, and steam and gas turbines as well as power-using machines, such as refrigeration and air-conditioning systems. Like other engineers, mechanical engineers use computers to help create and analyze designs, run simulations and test how a machine is likely to work.[23] Salaries and workforce statistics[edit] The total number of engineers employed in the U.S. in 2015 was roughly 1.6 million. Of these, 278,340 were mechanical engineers (17.28%), the largest discipline by size.[24] In 2012, the median annual income of mechanical engineers in the U.S. workforce was $80,580. The median income was highest when working for the government ($92,030), and lowest in education ($57,090).[25] In 2014, the total number of mechanical engineering jobs was projected to grow 5% over the next decade.[26] As of 2009, the average starting salary was $58,800 with a bachelor's degree.[27] Modern tools[edit]

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[edit] The field of mechanical engineering can be thought of as a collection of many mechanical engineering science 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[edit]

Mohr's circle, a common tool to study stresses in a mechanical element

Main article: Mechanics 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

Statics, the study of non-moving bodies under known loads, how forces affect static bodies Dynamics the study of how forces affect moving bodies. Dynamics includes kinematics (about movement, velocity, and acceleration) and kinetics (about forces and resulting accelerations). Mechanics
of materials, the study of how different materials deform under various types of stress Fluid mechanics, the study of how fluids react to forces[28] Kinematics, the study of the motion of bodies (objects) and systems (groups of objects), while ignoring the forces that cause the motion. Kinematics
is often used in the design and analysis of mechanisms. Continuum mechanics, a method of applying mechanics that assumes that objects are continuous (rather than discrete)

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 pistons and cams as the engine cycles. Mechanics
of materials might be used to choose appropriate materials for the frame and engine. Fluid mechanics
Fluid mechanics
might be used to design a ventilation system for the vehicle (see HVAC), or to design the intake system for the engine. Mechatronics
and robotics[edit]

Training FMS with learning robot SCORBOT-ER 4u, workbench CNC
Mill and CNC

Main articles: Mechatronics
and Robotics Mechatronics
is a combination of mechanics and electronics. It is an interdisciplinary branch of mechanical engineering, electrical engineering and software 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. 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 ensure better quality. Many companies employ assembly lines of robots, especially in Automotive Industries 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, from recreation to domestic applications. Structural analysis[edit] Main articles: Structural analysis
Structural analysis
and Failure analysis 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
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[29] to aid them in determining the type of failure and possible causes. Structural analysis
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[edit] Main article: Thermodynamics 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. Design
and drafting[edit]

A CAD model of a mechanical double seal

Main articles: Technical drawing
Technical drawing
and CNC Drafting or technical drawing is the means by which mechanical engineers design products and 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). Areas of research[edit] 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)[edit] 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 are 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
Friction stir welding
(FSW)[edit] Main article: Friction stir welding Friction stir welding, a new type of welding, was discovered in 1991 by The Welding
Institute (TWI). The innovative steady state (non-fusion) welding technique joins materials previously un-weldable, including several aluminum alloys. It plays 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.[30][31][32] Composites[edit]

Composite cloth consisting of woven carbon fiber

Main article: Composite material Composites or composite materials are a combination of materials which provide different physical characteristics than either material separately. Composite material
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[edit] Main article: 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 automation from an engineering perspective and serves the purposes of controlling advanced hybrid systems. Nanotechnology[edit] Main article: 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. Areas of current mechanical engineering research in nanotechnology include nanofilters,[33] nanofilms,[34] and nanostructures,[35] among others. See also: Picotechnology Finite element analysis[edit] Main article: 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 the evolution of computers has made FEA/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 the design of components. Some 3D modeling and CAD software packages have added FEA modules. In the recent times, cloud simulation platforms like SimScale are becoming more common. 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. In recent years meshfree methods like the smoothed particle hydrodynamics are gaining popularity in case of solving problems involving complex geometries, free surfaces, moving boundaries, and adaptive refinement.[citation needed] Biomechanics[edit] Main article: Biomechanics Biomechanics
is the application of mechanical principles to biological systems, such as humans, animals, plants, organs, and cells.[36] Biomechanics
also aids in creating prosthetic limbs and artificial organs for humans. Biomechanics
is closely related to engineering, because it often uses traditional engineering sciences to analyze biological systems. Some simple applications of Newtonian mechanics and/or materials sciences can supply correct approximations to the mechanics of many biological systems. Over the past decade the Finite element method
Finite element method
(FEM) has also entered the Biomedical sector highlighting further engineering aspects of Biomechanics. FEM has since then established itself as an alternative to in vivo surgical assessment and gained the wide acceptance of academia. The main advantage of Computational Biomechanics
lies in its ability to determine the endo-anatomical response of an anatomy, without being subject to ethical restrictions.[37] This has led FE modelling to the point of becoming ubiquitous in several fields of Biomechanics
while several projects have even adopted an open source philosophy (e.g. BioSpine). Computational fluid dynamics[edit] Main article: Computational fluid dynamics Computational fluid dynamics, usually abbreviated as CFD, is a branch of fluid mechanics that uses numerical methods and algorithms to solve and analyze problems that involve fluid flows. Computers are used to perform the calculations required to simulate the interaction of liquids and gases with surfaces defined by boundary conditions. With high-speed supercomputers, better solutions can be achieved. Ongoing research yields software that improves the accuracy and speed of complex simulation scenarios such as transonic or turbulent flows. Initial validation of such software is performed using a wind tunnel with the final validation coming in full-scale testing, e.g. flight tests. Acoustical engineering[edit] Main article: Acoustical engineering Acoustical engineering
Acoustical engineering
is one of many other sub-disciplines of mechanical engineering and is the application of acoustics. Acoustical engineering is the study of Sound
and Vibration. These engineers work effectively to reduce noise pollution in mechanical devices and in buildings by soundproofing or removing sources of unwanted noise. The study of acoustics can range from designing a more efficient hearing aid, microphone, headphone, or recording studio to enhancing the sound quality of an orchestra hall. Acoustical engineering
Acoustical engineering
also deals with the vibration of different mechanical systems.[38] Related fields[edit] Manufacturing engineering, Aerospace engineering
Aerospace engineering
and Automotive 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[edit]


At Wikiversity, you can learn more and teach others about Mechanical engineering at the Department of Mechanical engineering


Glossary of mechanical engineering List of historic mechanical engineering landmarks List of inventors List of mechanical engineering topics List of mechanical engineers List of related journals List of mechanical, electrical and electronic equipment manufacturing companies by revenue


American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) American Society of Mechanical Engineers
American Society of Mechanical Engineers
(ASME) Pi Tau Sigma (Mechanical Engineering
honor society) Society of Automotive Engineers (SAE) Society of Women Engineers
Society of Women Engineers
(SWE) Institution of Mechanical Engineers
Institution of Mechanical Engineers
(IMechE) (British) Chartered Institution of Building Services Engineers (CIBSE) (British) Verein Deutscher Ingenieure
Verein Deutscher Ingenieure
(VDI) (Germany)


Mechanics Engineering
Thermodynamics Engineering
Acoustics Fluid Mechanics Heat Transfer Microtechnology Nanotechnology Pro/Engineer (ProE CAD) Strength of Materials/Solid Mechanics

Notes and references[edit]

^ engineering "mechanical engineering". The American Heritage Dictionary of the English Language, Fourth Edition. Retrieved: 19 September 2014. ^ "mechanical engineering". Webster dictionary. Retrieved: 19 September 2014. ^ "Heron of Alexandria". Encyclopædia Britannica 2010 - Encyclopædia Britannica Online. Accessed: 9 May 2010. ^ Needham, Joseph (1986). Science
and Civilization in China: Volume 4. Taipei: Caves Books, Ltd. ^ Al-Jazarí. The Book of Knowledge of Ingenious Mechanical Devices: Kitáb fí ma'rifat al-hiyal al-handasiyya. Springer, 1973. ISBN 90-277-0329-9. ^ Engineering
- Encyclopædia Britannica, accessed 6 May 2008 ^ R. A. Buchanan. The Economic History Review, New Series, Vol. 38, No. 1 (Feb., 1985), pp. 42–60. ^ ASME
history Archived 23 February 2011 at Wikiwix, accessed 6 May 2008. ^ The Columbia Encyclopedia, Sixth Edition. 2001-07, engineering, accessed 6 May 2008 ^ "Mechanical Engineering". Retrieved 8 December 2011.  ^ ABET searchable database of accredited engineering programs, Accessed 11 March 2014. ^ Accredited engineering programs in Canada by the Canadian Council of Professional Engineers Archived 10 May 2007 at the Wayback Machine., Accessed 18 April 2007. ^ Types of post-graduate degrees offered at MIT Archived 16 June 2006 at the Wayback Machine. - Accessed 19 June 2006. ^ 2008-2009 ABET Criteria Archived 28 February 2008 at the Wayback Machine., p. 15. ^ University of Tulsa Required ME Courses - Undergraduate Majors and Minors Archived 4 August 2012 at Archive.is. Department of Mechanical Engineering, University of Tulsa, 2010. Accessed: 17 December 2010. ^ Harvard Mechanical Engineering
Page. Harvard.edu. Accessed: 19 June 2006. ^ Mechanical Engineering
courses, MIT. Accessed 14 June 2008. ^ "Archived copy". Archived from the original on 8 November 2012. Retrieved 5 November 2012. . Apollo Research
Institute, Future Work Skills 2020, Accessed 5 November 2012. ^ "Archived copy". Archived from the original on 16 November 2012. Retrieved 5 November 2012.  Aalto University School of Engineering, Design
Factory - Researchers Blog, Accessed 5 November 2012. ^ "Why Get Licensed?". National Society of Professional Engineers. Retrieved 6 May 2008.  ^ "Engineers Act". Quebec Statutes and Regulations (CanLII). Archived from the original on 5 October 2006. Retrieved 24 July 2005.  ^ "Codes of Ethics and Conduct". Online Ethics Center. Archived from the original on 19 June 2005. Retrieved 24 July 2005.  ^ "Mechanical Engineer Career Profile Job Description, Salary, and Growth Truity". www.truity.com. Retrieved 2017-04-06.  ^ "May 2015 National Occupational Employment and Wage Estimates". U.S. Department of Labor, Bureau of Labor Statistics. Retrieved 3 March 2017.  ^ Occupational Employment and Wages, 17-2141 Mechanical Engineers. U.S. Bureau of Labor, May 2012. Accessed: 15 February 2014. ^ Mechanical Engineers. U.S. Bureau of Labor Statistics, December 17, 2015. Accessed: 3 March 2017. ^ "2010-11 Edition, Engineers". Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook, Accessed: 9 May 2010. ^ 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. ^ ASM International's site many documents, such as the ASM Handbook series Archived 29 August 2011 at Wikiwix. ASM International. ^ "Advances in Friction Stir Welding
for Aerospace Applications" (PDF). Retrieved 12 August 2017.  ^ PROPOSAL NUMBER: 08-1 A1.02-9322 - NASA 2008 SBIR ^ " Military
Applications".  ^ Nilsen, Kyle. (2011) "Development of Low Pressure Filter Testing Vessel and Analysis of Electrospun Nanofiber Membranes for Water Treatment" ^ Mechanical Characterization of Aluminium Nanofilms, Microelectronic Engineering, Volume 88, Issue 5, May 2011, pp. 844–847. ^ http://www.cise.columbia.edu/nsec/ Columbia University and National Science
Foundation, Accessed 20 June 2012. ^ R. McNeill Alexander (2005) " Mechanics
of animal movement", Current Biology Volume 15, Issue 16, 23 August 2005, pp. R616-R619. ^ Tsouknidas, A., Savvakis, S., Asaniotis, Y., Anagnostidis, K., Lontos, A., Michailidis, N. (2013) The effect of kyphoplasty parameters on the dynamic load transfer within the lumbar spine considering the response of a bio-realistic spine segment. Clinical Biomechanics
28 (9-10), pp. 949-955. ^ "What is the Job Description of an Acoustic Engineer?". learn.org. 

Further reading[edit]

Library resources about Mechanical engineering

Resources in your library Resources in other libraries

Burstall, Aubrey F. (1965). A History of Mechanical Engineering. The MIT Press. ISBN 0-262-52001-X.  Marks' Standard Handbook for Mechanical Engineers (11 ed.). McGraw-Hill. 2007. ISBN 9780071428675. 

External links[edit]

Wikimedia Commons has media related to Mechanical engineering.

Wikiquote has quotations related to: Mechanical engineering

v t e



Architectural Construction Environmental Earthquake Geotechnical Hydraulic Mining Structural Transportation


Acoustical Aerospace Automotive Marine Mechatronics Railway Thermal


Computer Control Electromechanics Electronics Microwaves Power Radio Frequency Telecommunications


Biochemical Biological Molecular Petroleum Process Reaction Thermodynamics Transport


Audio Biomedical Ceramics Engineering
mathematics Engineering
mechanics Engineering
science Fire Industrial Materials science Metallurgy Military Nanotechnology Nuclear Optical Photonics Privacy Robotics Security Systems


Engineering Aerospace engineering Civil engineering Electrical and electronics engineering Mechanical engineering Structural engineering

List of engineering branches Category:Engineering Engineering

v t e

of science and engineering

Aerospace engineering Archaeology Architecture Artificial intelligence Astronomy Biology Botany Calculus Chemistry Civil engineering Clinical research Ecology Economics Electrical and electronics engineering Engineering Entomology Environmental science Genetics Geography Geology Machine
vision Mathematics Mechanical engineering Physics Probability and statistics Robotics Speciation Structural engineering

v t e

Levels of academic degree


ISCED level 5

Associate degree Foundation degree Higher National Diploma/Diploma of Higher Education/Certificate of Higher Education

ISCED level 6

Bachelor's degree Honours degree


ISCED level 7

Master's degree Magister degree Postgraduate certificate/diploma Diplom degree Specialist degree Engineer's degree

ISCED level 8

Doctorate Candidate of Sciences Magister degree



Higher doctorate Doktor nauk Habilitation Docent Tenure Fellow

No dominant classification

Laurea Licentiate Professional degree Graduate certificate/diploma Terminal degree


Honorary degree Ad eundem degree

Authority control

LCCN: sh85082757 GND: 4037790-8 BNF: cb119403951 (data) NDL: 0056