Download - What is Engineering? An overview Michael Karweit Dept. Chemical Engineering Johns Hopkins University
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What is Engineering?
An overview
Michael KarweitDept. Chemical Engineering
Johns Hopkins University
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What is Engineering?
According to Webster’s II New Riverside Dictionary:
Engineering is “the application of mathematical andscientific principles to practical ends, as the design,construction, and operation of economical and efficientstructures, equipment, and systems.”
But is there more. . .?
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Engineering is art. Aesthetics as well as function counts
The Guggenheim Museum, Bilbao, SpainFrank Gehry, architect
The Ironbridge, Coalbrookdale,England 1779
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More art . . .
Pont du Gard, France, 100AD
Maillart bridge, Switzerland
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Engineering is approximation. The mathematics of engineeringsystems are often too complicated to solve analytically.
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Engineering is measurement and estimation. River flow,noise in a communication system, scatter in a laser beam,earthquake characteristics--all require measurement
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Engineering is modeling and simulation. Often the only efficient means to confirm that an idea or design will work is to experiment with a scale model or computer simulation.
Model of the X-33 being testedin the NASA Langley Mach 20helium wind tunnel
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Engineering is communication. Making presentations,producing technical manuals, coordinating teams for largescale projects are all fundamental to engineering practice.
Richard Feynmanduring the Challengerdisaster hearings.
$125M communication error
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Engineering is politics. The best functional solutionis not necessarily the best practical solution.
Three-mile island
NIMBY
Alaskan pipeline
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Engineering is finance. Design, construction, operation,and maintenance costs determine the viability ofprojects.
The Big Dig: Boston’s $14.2 billion construction project
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Engineering is invention. New devices, materials, and processes are developed by engineers to meet needs that existing technologies do not address.
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Engineering is ethics.
Engineering is safety.
Engineering is public service.
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.This list is not exhaustive, but it does suggest a far broaderscope than Webster’s II definition
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What is Engineering? The course.
From a substantive point of view:
1) Strength/behavior of materials2) Statics/structures3) Uncertainty, statistics, measurment4) Robotics5) Digital logic/circuitry6) Separation processes7) Diffusion, heat transfer
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From a “process” point of view, i.e., what an engineerdoes
1) Communicationa) proposal presentationb) development of assembly/construction plansc) reporting and interpreting of laboratory resultsd) research synthesis (written)
2) Project managementa) time/team managementb) designc) constructiond) testing
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“process” (cont.)
3) Experimentationa) measurementb) application of principlesc) application of data
4) Toolsa) approximationb) statisticsc) computer software
i) simulationii) spreadsheet/presentationiii) graphics/drawing
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Expose yourself to engineering!