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Ferdinand Pierre Beer (August 8, 1915 – April 30, 2003) was a French mechanical engineer and university professor. He spent most of his career as a member of the faculty at Lehigh University , where he served as the chairman of the mechanics and mechanical engineering departments.
In civil engineering and structural analysis Clapeyron's theorem of three moments (by Émile Clapeyron) is a relationship among the bending moments at three consecutive supports of a horizontal beam.
In materials science and engineering, the yield point is the point on a stress–strain curve that indicates the limit of elastic behavior and the beginning of plastic behavior.
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Strengthening mechanisms that alter the strength of a material include work hardening, solid solution strengthening, precipitation hardening, and grain boundary strengthening. Strengthening mechanisms are accompanied by the caveat that some other mechanical properties of the material may degenerate in an attempt to make a material stronger.
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John "Jack" Johnston (13 March 1923 – 14 October 2003) was a British econometrician. He spent most of his career at the University of Manchester , and later University of California, Irvine . Johnston is particularly known for authoring Econometric Methods (First edition 1964), one of the earliest and most popular textbooks in econometrics ...
Paul R. Johnston was the chief executive officer at Exponent Inc. from May 28, 2009 – May 31, 2018. Johnston was president of Exponent Inc. from May 2007 until July 2016. Johnston joined Exponent in 1981 and served as its Principal Engineer since 1987 and vice president since 1996. [ 11 ]