Fatigue behaviour of BS 2L65 aluminium alloy pin - aerade

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LIST OF CONTENTS
INTR0 DUCTION 3
FATIGUE TESTS 4
2.1 Material and specimens 4
2°2 Fatigue tests and results 5
2.3 Life estimations and comparison with achieved performances 7
LOCAL STRESS HISTORY MEASURI~ENTS 7
3. I Method of measurement 8
3.2 Material and specimens 8
3.3 Summary of tests carried out 8
3.4 Results 9
DISCUSSION I 0
4. I Effect of passivating bushes 10
4.2 The effect of an interference-fit bush on the life of a lug 10
under constant amplitude loading
4.3 The effect of a prestress on bushed and unbushed lugs under 12
constant amplitude loading
4.4 The performance of bushed lugs under narrow band random 14
loading
CONCLUSIONS
Appendix A Local stresses in a bushed lug
Appendix B Fatigue testing facility and load spectra
Appendix C Cumulative damage calculations made using Miner's Rule
Appendix D Method of life estimation allowing for residual stresses
Table I Chemical composition and tensile properties of BS 2L65
aluminium alloy
Table 2 Fatigue test results
Table 3 Fatigue test results
Table 4 Fatigue test results
Table 5 Fatigue test results
Table 6 Fatigue test results
Table 7 Fatigue test results
Table 8 Fatigue test results
Table 9 Fatigue test results
Re feren~e s
Illustrations
Detachable abstract cards
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Figures 1-43