SYMPOSIA PAPER Published: 01 January 1988

A Procedure for Standardizing Crack Closure Levels


A consistent and automated method of global crack closure measurement has been developed for the compact tension specimen. The technique uses the elastic compliance technique enabling both crack length and crack closure measurements to be automated with the aid of a digital computer data acquisition and control system. The procedure is limited to steady state fatigue crack growth rates above the near-threshold regime.

Author Information

Donald, JK
Fracture Technology Associates, Pleasant Valley, PA
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Developed by Committee: E08
Pages: 222–229
DOI: 10.1520/STP27211S
ISBN-EB: 978-0-8031-5052-2
ISBN-13: 978-0-8031-0996-4