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Published byLoren Clarke Modified over 9 years ago
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Lecture # 5 Mechanical Properties Intended learning Outcomes: After the end of this lecture the student should be able to: Define stress –strain relation. State Hooke’s law. Modules of elasticity. Tensile strength,percent elongation,Ductility Hardness and the different tests methods for measuring it.
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TENSION TESTS:
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There are three principal ways in which a load may be applied: namely, tension, compression, and shear (Figures 7.1a, b, c).
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Shear test:
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Torsion test:
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