The strain is set to horizontal axis and stress is set to vertical axis. Stress-strain curve for material is plotted by elongating the sample and recording the stress variation with strain until the sample fractures. Stress/Strain graph of a tension test experiment. You are watching: Difference between engineering strain and true strain These curves reveal many of properties of materials, such as the Young’s modulus, the yield strength, the ultimate tensile strength and so on. That is obtained by gradually applying load to a test coupon and measuring the deformation from tensile testing, which the stress and strain can be determined. In engineering and materials science, stress–strain curve for a material gives the relationship between stress and strain.
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