LX. On the correlation of the directional properties of boiled shee in tension and cupping tests

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Abstract
Plastic anisotropy in rolled sheet is examined by tension and cupping tests. The earing positions are correlated with, the strain-ratios measured in tension tests at various orientations to the direction of rolling. The materials used are copper giving four ears at 45°, brass giving four ears at 50°, and brass giving six ears at 0° and 60°. A theory of plastic anisotropy due to Hill is found to be in good agreement with the experimental data for materials producing four ears. The theory is extended to describe more complex states of anisotropy.

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