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Summary:
The characterization of multiple-site damage by use of laboratory test specimens is an important precursor to the understanding of multiple-site damage in aging aircraft. As the number of damage sites in the laboratory specimen increases, it becomes more time-consuming to measure crack initiation and growth from the various sites. Typically the crack initiation and crack growth would be measured either visually or with a low-power microscope. This technique is accurate, but it is labor-intensive. To decrease the time necessary to obtain multiple-site crack growth rate data, an automated crack length measuring technique, AC potential drop, was investigated.
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Reproduction Note:
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1995. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
