SEDL / STP / STP714-EB / STP27480S

Effect of Spectrum Editing on Fatigue Crack Initiation and Propagation in a Notched Member

Socie, DF
Assistant professor and research assistant, Mechanical Engineering, University of Illinois, Urbana, Ill.

Artwohl, PJ
Assistant professor and research assistant, Mechanical Engineering, University of Illinois, Urbana, Ill.

Pages: 21    Published: Jan 1980

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Abstract

A method for eliminating small, nondamaging cycles from irregular loading histories is described. Analytic estimates of crack initiation, crack propagation, and total fatigue lives are compared to experimental data for full and edited load histories from the Society of Automotive Engineers Cumulative Fatigue Damage Test Program. Load histories edited to have equal crack initiation lives do not have equal crack propagation lives.