![]() This is done by converting the load values to stress values and converting the deflection values to strain values: Since we are interested material behavior without regard to geometry, it is useful to generalize the data to remove the effect of geometry. The deflection in the test specimen is dependent on both the material's elastic modulus as well as the geometry of the specimen (area and length). ![]() These values can be plotted as a load-deflection curve. In this test, a steadily increasing axial force is applied to a test specimen, and the deflection is measured as the load is increased. The relationship between stress and strain in a material is determined by subjecting a material specimen to a tension or compression test.
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