Structure of Polymers and Fatigue Crack Propagation

R. Hertzberg; J. Manson; W. Wu

doi:10.1520/STP49653S

SYMPOSIA PAPER Published: 01 January 1973

STP49653S

Structure of Polymers and Fatigue Crack Propagation

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The fatigue crack propagation behavior of a very wide range of engineering plastics was examined. Crack growth rates per cycle were found to be a power function of the applied stress intensity factor range. In contrast to metals, the relative performance of the polymers examined was seen to vary widely, presumably because of major differences in structural features, viscoelastic response, and deformation mechanisms. For example, it was observed that resistance to fatigue crack advance was enhanced by the presence of crystalline regions and by the addition of rubbery inclusions.

Author Information

Hertzberg, R., W.

Lehigh University, Bethlehem, Pa.

Manson, J., A.

Lehigh University, Bethlehem, Pa.

Wu, W., C.

Lehigh University, Bethlehem, Pa.

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Details

Developed by Committee: E08

Pages: 391–403

DOI: 10.1520/STP49653S

ISBN-EB: 978-0-8031-8151-9

ISBN-13: 978-0-8031-6660-8

Structure of Polymers and Fatigue Crack Propagation

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