SYMPOSIA PAPER Published: 01 January 1989

Compilation of Procedures for Fatigue Crack Propagation Testing Under Complex Load Sequences


A review is made of procedures, developed at the National Aeronautical Laboratory for fatigue crack propagation testing under flight spectrum loading. They include K-control and on-line spectrum editing that were found to have a significant impact on spectrum load testing. Techniques are described for unambiguous assessment of crack closure stress and for binary-coded marker loading.

Author Information

Sunder, R
National Aeronautical Laboratory, Bangalore, India
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Developed by Committee: E08
Pages: 211–230
DOI: 10.1520/STP10357S
ISBN-EB: 978-0-8031-5072-0
ISBN-13: 978-0-8031-1185-1