Fatigue lifetimes for cracks at a double row of holes

Report (1981)

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Published Date

28-02-1981

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RAE Technical Report No. 81019

Abstract

Comparisons have been made of the stress intensity factors in single and double rows of cracked fastener holes. It is found that for a model configuration with cracks of equal size the stress intensity factor is less when a given number of fasteners is arranged in a double row. This results in slower rates of fatigue crack growth and longer lifetimes. Design implications are discussed of using double rows of fasteners to meet the requirements of damage-tolerant specifications.

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