volume 33, issue 4, P217-226 1993
DOI: 10.1002/pen.760330405
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Abstract: Abstract Using the Crack Layer Theory, differences in damage formation under different stress states during fatigue crack propagation in an ethylene‐butene copolymer were quantified and compared. Despite having vastly different stress states and crack propagation behaviors, arc specimens (28 mm thick) and single edge notched (SEN) specimens (2 mm thick) were shown to have the same specific enthalpy of damage, ∼300 J/g, a parameter in the Crack Layer Theory that is a measure of the material's intrinsic toughne…

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