Fatigue behaviour of BS 2L65 aluminium alloy pin - aerade
Fatigue behaviour of BS 2L65 aluminium alloy pin - aerade
Fatigue behaviour of BS 2L65 aluminium alloy pin - aerade
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24<br />
CONSTANT AMPLITUDE LOADING<br />
Table 2<br />
FATIGUE TEST RESULTS<br />
Mean <strong>pin</strong> bearing stress = 153 MN/m 2<br />
(Mean net stress* = 95 NN/m 2)<br />
Bushes unpassivated<br />
Specimen No.<br />
825<br />
430<br />
744<br />
438<br />
439<br />
440<br />
749<br />
502<br />
379<br />
426<br />
432<br />
375<br />
378<br />
381<br />
385<br />
370<br />
373<br />
377<br />
448<br />
369<br />
371<br />
376<br />
384<br />
433<br />
Rms <strong>pin</strong><br />
bearing stress<br />
(MN/m 2 )<br />
32.2<br />
32.2<br />
32.2<br />
32.2<br />
36.2<br />
36.2<br />
36.2<br />
36.2<br />
40.3<br />
40.3<br />
40.3<br />
48.3<br />
48.3<br />
48.3<br />
48.3<br />
64.4<br />
64.4<br />
64 -4<br />
64-4<br />
80.5<br />
8O.5<br />
8O.5<br />
8O.5<br />
8O.5<br />
J,,.<br />
i<br />
*Rms net<br />
stress<br />
(NNIm2)<br />
20<br />
20<br />
20<br />
20<br />
22.5<br />
22.5<br />
22.5<br />
22.5<br />
25<br />
25<br />
25<br />
3o<br />
30<br />
30<br />
30<br />
4o<br />
40<br />
40<br />
40<br />
5o<br />
5o<br />
5o<br />
5o<br />
5o<br />
(UB) Unbroken<br />
Life<br />
( 104 cycles)<br />
128.0<br />
289.0<br />
78.5<br />
161o.o (uB)<br />
147.0<br />
96.0<br />
328.0<br />
69.1<br />
122<br />
63,7<br />
58.8<br />
38.2<br />
123.0<br />
82.6<br />
67.0<br />
21.8<br />
26.3<br />
21.8<br />
24.3<br />
7.8<br />
19.1<br />
11.9<br />
7.2<br />
7.4<br />
* Based on net section area including bush wall<br />
it<br />
Loog4mean life<br />
(10 cycles)<br />
134<br />
77.o<br />
71.3<br />
23.5<br />
9.9
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