Abstract
Abstract The tension-compression asymmetry (TCA) of a dual phase steel sheet with a tensile strength of 980 MPa is measured using an in-plane uniaxial tension-compression testing apparatus. The TCA data within a logarithmic strain range of 0≤| e |≤ 0.086 are observed both in the rolling and transverse directions of the test material. Moreover, a novel testing apparatus for measuring a pure bending moment-curvature (M-K) diagram is designed and manufactured. The measured M-K curves are consistent with those calculated taking into account the TCA of the stress-strain curve both in the rolling and transverse directions.
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