Investigation of strain distribution around fatigue cracks in aluminum sheets
Abstract
A survey of developments in the field of crack
propagation and an experimental investigation of the
strain distribution around fatigue cracks in flat
aluminum sheets was conducted by Lt. E. B. Tucker, USN,
at the Aeronautical Engineering Department of the U. S.
Naval Postgraduate School, Monterey, California. Crack
propagation was produced by constant stress reverse
bending. Crack propagation rates were determined for
both central and edge cracks. The nature of the
geometry in the thickness direction around the crack tip
was described and analyzed with the aid of Newton's
Interference Fringes. A possible adaption of the method
with the birefrlngent coating technique is suggested for
further study.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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