Discussion
Assertion (A): The end fasteners of a multi-row joint are the usual fatigue origins.
Reason (R): Differential stretching of the two sheets makes the outer rows carry more load.
Select the correct answer from the options below.
Answer: A
Both statements are true and the second is the reason for the first. The effect grows with the number of rows and with any stiffness mismatch, and tapering the sheet thickness towards the joint ends is one way of evening the sharing.
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