SYMPOSIA PAPER Published: 01 January 2000

Pitfalls to Avoid in Threshold Testing and its Interpretation


The impact of a number of testing variables on the measurement of fatigue crack growth thresholds is discussed. References are made to the original works from which the current recommendations for measurement of threshold in ASTM E 647 were derived. The applicability of these original recommendations in light of advances made since that time is discussed. In addition, the effects of some commonly overlooked parameters and features, such as residual stress and environment, on the measurement and interpretation of crack growth thresholds are presented.

Author Information

Bush, RW
USAF Academy, CO
Donald, JK
Fracture Technology Associates, Bethlehem, PA
Bucci, RJ
Alcoa Technical Center, Aluminum Company of America, Alcoa Center, PA
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Developed by Committee: E08
Pages: 269–284
DOI: 10.1520/STP13438S
ISBN-EB: 978-0-8031-5424-7
ISBN-13: 978-0-8031-2624-4