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A method using surface curvatures to detect the onset of localized necking in forming limit tests [Min J, Stoughton TB, Carsley JE, Lin J. A Method of Detecting the Onset of Localized Necking Based on Surface Geometry Measurements. Exp Mech 2016; DOI:10.1007/s11340-016–0232-4.] is improved to be more robust and operator-independent. The improved method is referred to as the 3D curvature method, whereby...
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