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An AGARD supplemental test programme on the behaviour of short cracks under constant amplitude and aircraft spectrum loadingAn AGARD Supplemental Test Program on the growth of short fatigue cracks was conducted to allow testing of various materials and loading conditions that were of interest. Twenty-two participants from ten laboratories in eight countries contributed to the supplemental test program. The objective is to review the supplemental test program and to summarize the results obtained from all laboratories. The materials tested in the supplemental program were: 2024-T3 and 7075-T6 aluminum alloys, 2090-T8E41 aluminum-lithium alloy, Ti6Al4V titanium alloy, and 4340 steel. Tests on single-edge-notch-tension specimens were conducted under several constant-amplitude loading conditions and spectrum loading conditions (FALSTAFF, Inverted FALSTAFF, GAUSSIAN, TWIST, Felix, and the Fokker 100 spectra). The plastic-replica method was used to measure the growth of short cracks at the notch root. The results from the supplemental test program show good agreement among the several laboratories who measured short-crack growth rates on the aluminum-lithium alloy.
Document ID
19910001928
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Edwards, P. R.
(P. P. Data Ltd. Fleet, United Kingdom)
Newman, James C., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1990
Publication Information
Publication: AGARD, Short-Crack Growth Behaviour in Various Aircraft Materials
Subject Category
Structural Mechanics
Accession Number
91N11241
Distribution Limits
Public
Copyright
Other
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