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Development of a side-grooved crack gage for fleet tracking of fatigue damage

โœ Scribed by A. Dumanis-Modan; A.F. Grandt Jr

Book ID
103070239
Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
895 KB
Volume
26
Category
Article
ISSN
0013-7944

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โœฆ Synopsis

This paper describes research directed toward developing the "crack growth gage" technique for tracking fatigue damage in a fleet of similar structures. The long-term goal is to provide a simple field level technique for assessing the severity of service loads with respect to their potential for causing fatigue crack growth. The current work was directed at designing a thin crack gage coupon which simulates plane strain behavior in the thin coupons. A series of experiments was conducted with the side-grooved crack gage geometry, and employed a variety of constant amplitude. single peak overload and variable amplitude load histories. The experimental behavior is predicted quite well by a load independent model developed previously.

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