Fatigue Crack Closure: Observations and Technical Significance

J Schijve

doi:10.1520/STP27198S

SYMPOSIA PAPER Published: 01 January 1988

STP27198S

Fatigue Crack Closure: Observations and Technical Significance

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The meaning of crack closure for fatigue crack growth resistance is discussed under different headings: (1) mechanistic aspects of crack closure—essential differences between microcracks and macrocracks, microstructural influences; (2) direct methods and indirect methods to measure crack closure; (3) numerical aspects of crack closure relations for constant-amplitude loading; and (4) crack closure and variable-amplitude loading. The paper summarizes the present state of the art. Attention is paid to microstructural aspects, changing crack growth mechanisms under threshold conditions and 3-dimensional aspects including plane strain/plane stress problems.

Author Information

Schijve, J

Faculty of Aerospace Engineering, Delft University of Technology, Delft, The Netherlands

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Details

Developed by Committee: E08

Pages: 5–34

DOI: 10.1520/STP27198S

ISBN-EB: 978-0-8031-5052-2

ISBN-13: 978-0-8031-0996-4

Fatigue Crack Closure: Observations and Technical Significance

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