volume 35, issue 4, P291-303 1995
DOI: 10.1002/pen.760350403
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Abstract: Abstract The phenomenology of yield in bisphenol‐A polycarbonate is explored through tensile tests on thin rectangular specimens and through pressure‐induced bulging of thin, clamped circular disks. In a tensile test, while the nominal critical stress at which yield initiates and the nominal draw stress at which a stable neck propagates along a specimen depend on the temperature and the strain rate, the ratio of the draw stress to the critical stress is shown to be approximately 0.75 over a temperature range …

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