The Fatigue behaviour of initially crack free aluminium 6061 is shown in Figure Q12. A component constructed from this alloy undergoes 100,000 cycles of loading at a stress amplitude of 150 MPa and 10,000 cycles at 200 MPa. What proportion of it's fatigue life has been exceeded. Give your answer to 2 decimal places 300 o (MPa) 250 200 150 100 50 10³ 10* 105 10 N Stress Ratio R=-1 o Test Point 107 TOLL **** 108 10⁹
The Fatigue behaviour of initially crack free aluminium 6061 is shown in Figure Q12. A component constructed from this alloy undergoes 100,000 cycles of loading at a stress amplitude of 150 MPa and 10,000 cycles at 200 MPa. What proportion of it's fatigue life has been exceeded. Give your answer to 2 decimal places 300 o (MPa) 250 200 150 100 50 10³ 10* 105 10 N Stress Ratio R=-1 o Test Point 107 TOLL **** 108 10⁹
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 alt="QUESTION 12
The Fatigue behaviour of initially crack free aluminium 6061 is shown in Figure Q12. A component constructed from this alloy undergoes 100,000 cycles of
loading at a stress amplitude of 150 MPa and 10,000 cycles at 200 MPa. What proportion of it's fatigue life has been exceeded. Give your answer to 2 decimal
places
300
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200
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Figure 12: S-N curve of 6061-T6 aluminium alloy - Bai et al: Sensors 14 (2014), 4364-4383
******
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Transcribed Image Text:QUESTION 12
The Fatigue behaviour of initially crack free aluminium 6061 is shown in Figure Q12. A component constructed from this alloy undergoes 100,000 cycles of
loading at a stress amplitude of 150 MPa and 10,000 cycles at 200 MPa. What proportion of it's fatigue life has been exceeded. Give your answer to 2 decimal
places
300
o (MPa)
200
250 LLVU-L LU
b 150
100
50
10³
cron
I ⠀⠀
I
1
I
I
I
104
I
I
O
LU
TENH
ETHN
I
1
1710
1
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I
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1
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100
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I
nn
H
LLUCE
105
I
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H
IIMIO
I
I
LLUWE
1
I
I
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Stress Ratio R=-1
o Test Point
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108
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11
17100
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106
N
Figure 12: S-N curve of 6061-T6 aluminium alloy - Bai et al: Sensors 14 (2014), 4364-4383
******
10⁹
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