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Fatigue behaviour of BS 2L65 aluminium alloy pin - aerade

Fatigue behaviour of BS 2L65 aluminium alloy pin - aerade

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LIST OF CONTENTS<br />

INTR0 DUCTION 3<br />

FATIGUE TESTS 4<br />

2.1 Material and specimens 4<br />

2°2 <strong>Fatigue</strong> tests and results 5<br />

2.3 Life estimations and comparison with achieved performances 7<br />

LOCAL STRESS HISTORY MEASURI~ENTS 7<br />

3. I Method <strong>of</strong> measurement 8<br />

3.2 Material and specimens 8<br />

3.3 Summary <strong>of</strong> tests carried out 8<br />

3.4 Results 9<br />

DISCUSSION I 0<br />

4. I Effect <strong>of</strong> passivating bushes 10<br />

4.2 The effect <strong>of</strong> an interference-fit bush on the life <strong>of</strong> a lug 10<br />

under constant amplitude loading<br />

4.3 The effect <strong>of</strong> a prestress on bushed and unbushed lugs under 12<br />

constant amplitude loading<br />

4.4 The performance <strong>of</strong> bushed lugs under narrow band random 14<br />

loading<br />

CONCLUSIONS<br />

Appendix A Local stresses in a bushed lug<br />

Appendix B <strong>Fatigue</strong> testing facility and load spectra<br />

Appendix C Cumulative damage calculations made using Miner's Rule<br />

Appendix D Method <strong>of</strong> life estimation allowing for residual stresses<br />

Table I Chemical composition and tensile properties <strong>of</strong> <strong>BS</strong> <strong>2L65</strong><br />

<strong>aluminium</strong> <strong>alloy</strong><br />

Table 2 <strong>Fatigue</strong> test results<br />

Table 3 <strong>Fatigue</strong> test results<br />

Table 4 <strong>Fatigue</strong> test results<br />

Table 5 <strong>Fatigue</strong> test results<br />

Table 6 <strong>Fatigue</strong> test results<br />

Table 7 <strong>Fatigue</strong> test results<br />

Table 8 <strong>Fatigue</strong> test results<br />

Table 9 <strong>Fatigue</strong> test results<br />

Re feren~e s<br />

Illustrations<br />

Detachable abstract cards<br />

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Figures 1-43

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