Tensile testing of metals is prescribed by ASTM Test E8, plastics by ASTM D638, and composite materials by ASTM D3039.), in which one end of a rod or wire specimen is clamped in a loading frame and the other subjected to a controlled displacement \(\delta\) (see Figure 1). Perhaps the most important test of a material’s mechanical response is the tensile test(Stress-strain testing, as well as almost all experimental procedures in mechanics of materials, is detailed by standards-setting organizations, notably the American Society for Testing and Materials (ASTM).
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