SYMPOSIA PAPER Published: 01 January 1985
STP36222S

Effect of Local Stress Biaxiality on the Behavior of Fatigue Crack Growth Test Specimens

Source

Fatigue crack growth rates have been measured for aluminium alloys, using compact type (CT) specimens, and the results compared with published data from the same materials, obtained from center-cracked tension (CCT) specimens. There is a general trend for CCT specimens to exhibit higher crack growth rates, even at identical stress intensity factor ranges. This result is explained in terms of the difference in the nonsingular component of stress, parallel to the crack faces, which influences both the plastic zone size, and, in the case of very thin specimens, the buckling behavior.

Author Information

Rhodes, D
Institut für Werkstofftechnologie, GKSS Firschungszentrum, Geesthacht, West Germany
Radon, JC
Department of Mechanical Engineering, Imperial College, London, U.K.
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Details
Developed by Committee: E08
Pages: 153–163
DOI: 10.1520/STP36222S
ISBN-EB: 978-0-8031-4921-2
ISBN-13: 978-0-8031-0444-0