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The
major fields of Engineering
Engineers apply the theories and principles of science and mathematics
to research and develop economical solutions to technical problems.
Their work is the link between perceived social needs and commercial
applications. Engineers design products, machinery to build those
products, factories in which those products are made, and the systems
that ensure the quality of the products and efficiency of the workforce
and manufacturing process. Engineers design, plan, and supervise
the construction of buildings, highways, and transit systems. They
develop and implement improved ways to extract, process, and use
raw materials, such as petroleum and natural gas. They develop new
materials that both improve the performance of products and take
advantage of advances in technology. They harness the power of the
sun, the Earth, atoms, and electricity for use in supplying the
Nation's power needs, and create millions of products using power.
They analyze the impact of the products they develop or the systems
they design on the environment and people using them. Engineering
knowledge is applied to improving many things, including the quality
of health care, the safety of food products, and the efficient operation
of financial systems.
Engineers consider
many factors when developing a new product. For example, in developing
an industrial robot, engineers determine precisely what function
the robot needs to perform; design and test the robot's components;
fit the components together in an integrated plan; and evaluate
the design's overall effectiveness, cost, reliability, and safety.
This process applies to many different products, such as chemicals,
computers, gas turbines, helicopters, and toys.
In addition
to design and development, many engineers work in testing, production,
or maintenance. These engineers supervise production in factories,
determine the causes of breakdowns, and test manufactured products
to maintain quality. They also estimate the time and cost to complete
projects. Some move into engineering management or into sales. In
sales, an engineering background enables them to discuss technical
aspects and assist in product planning, installation, and use.
Most engineers
specialize. More than 25 major specialties are recognized by professional
societies, and the major branches have numerous subdivisions. Some
examples include structural, environmental, and transportation engineering,
which are subdivisions of civil engineering; and ceramic, metallurgical,
and polymer engineering, which are subdivisions of materials engineering.
Engineers also may specialize in one industry, such as motor vehicles,
or in one field of technology, such as turbines or semiconductor
materials.
This statement,
which contains an overall discussion of engineering, is followed
by separate statements on 14 engineering branches: aerospace; agricultural;
biomedical; chemical; civil; computer hardware; electrical and electronics,
except computer; environmental; industrial, including health and
safety; materials; mechanical; mining and geological, including
mining safety; nuclear; and petroleum engineering. Some branches
of engineering not covered in detail in the Handbook, but for which
there are established college programs, include architectural engineering-the
design of a building's internal support structure; and marine engineering-the
design and installation of ship machinery and propulsion systems.
Engineers in
each branch have a base of knowledge and training that can be applied
in many fields. Electronics engineers, for example, work in the
medical, computer, communications, and missile guidance fields.
Because there are many separate problems to solve in a large engineering
project, engineers in one field often work closely with specialists
in other scientific, engineering, and business occupations.
Engineers use
computers to produce and analyze designs; to simulate and test how
a machine, structure, or system operates; and to generate specifications
for parts. New communications technologies using computers are changing
the way engineers work on designs. Engineers can collaborate on
designs with other engineers around the country or even abroad,
using the Internet or related communications systems. Many engineers
also use computers to monitor product quality and control process
efficiency. They spend a great deal of time writing reports and
consulting with other engineers, as complex projects often require
an interdisciplinary team of engineers. Supervisory engineers are
responsible for major components or entire projects.
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