| タイトル | An AGARD supplemental test programme on the behaviour of short cracks under constant amplitude and aircraft spectrum loading |
| 著者（英） | Edwards, P. R.; Newman, James C., Jr. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1990-08-01 |
| 言語 | eng |
| 内容記述 | An 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. |
| NASA分類 | STRUCTURAL MECHANICS |
| レポートNO | 91N11241 |
| 権利 | Copyright, Distribution within the U.S. granted by agreement |
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