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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28<br />
NARROW BAND RANDOM LOADING<br />
Table 7<br />
FATIGUE TEST RESULT~<br />
Mean <strong>pin</strong> bearing stress = 153 MN/m 2<br />
(Mean net stress* = 95 MN/m 2)<br />
Bushes unpassivated<br />
Specimen No.<br />
484<br />
454<br />
477<br />
Rms <strong>pin</strong><br />
bearing stress<br />
(MN/m 2)<br />
32.2<br />
32.2<br />
32.2<br />
NARROW BAND RANDOM LOADING<br />
i<br />
. Rms net<br />
stress<br />
(NN/m 2 )<br />
i , i<br />
20<br />
20<br />
20<br />
Table 8<br />
m?IaUE ~ST R~s~S<br />
Mean <strong>pin</strong> bearing stress = 153 MH/m 2)<br />
(Mean net stress* = 95 MN/m 2)<br />
Bushes passivated<br />
Specimen No.<br />
t i ,i<br />
453<br />
452<br />
461<br />
5OO<br />
46o<br />
748<br />
Rms <strong>pin</strong><br />
bearing ~tress<br />
(MN/m)<br />
u , i q<br />
32.2<br />
32.2<br />
32.2<br />
45.9<br />
45.9<br />
45.9<br />
I, ,L<br />
*Rms net<br />
st re s s<br />
(MN/m 2 )<br />
2O<br />
2O<br />
2O<br />
28.5<br />
28.5<br />
28.5<br />
i<br />
Life<br />
(lo4 cycles)<br />
118.0<br />
192.0<br />
156.0<br />
Life<br />
(104 cycles)<br />
258.O<br />
189.0<br />
156.0<br />
165.0<br />
I04.0<br />
113.0<br />
* Based on net section area including bush wall<br />
i<br />
i r 1 111,<br />
Log4mean life<br />
(10 cycles)<br />
i i<br />
152.0<br />
i ii<br />
Log mean life<br />
(104 cycles}<br />
i i i i<br />
197<br />
125
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