The true stress (in MPa) versus true strain relationship for a metal i – InterviewSolution

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1.	The true stress (in MPa) versus true strain relationship for a metal is given by σ=1020ϵ0.4 The cross-sectional area at the start of a test (when the stress and strain values are equal to zero) is 100mm2. The cross-sectional area at the time of necking (inmm2) is (correct to two decimal places).
Answer» The true stress (in MPa) versus true strain relationship for a metal is given by $σ = 1020 ϵ^{0.4}$ The cross-sectional area at the start of a test (when the stress and strain values are equal to zero) is $100 m m^{2}$ . The cross-sectional area at the time of necking ( $i n m m^{2})$ is (correct to two decimal places).

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