For the aluminum alloy 7075-T6, shown in Figure 11.23, a stress amplitude of 250 MPa is applied for 106 cycles to a group of 100 specimens. How many of these specimens should fail in this test?

What will be an ideal response?


In Figure 11.21 draw a vertical line from 106 cycles and a horizontal line at 250 MPa the two lines intersect very close to the 50% probability of failure line. Thus approximately 50 of the specimens should fail.



Physics & Space Science

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