Fracture mechanics of crack growth during sonic-IR inspection

J. C. Chen, William Riddell, Kyle Lick, Chang Hwa Wong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

In past studies, we showed that cracks synthesized under carefully controlled conditions will propagate when subjected to sonic IR testing. The extent or severity of the propagation observed depended on several parameters including the stress intensity factor (which corresponds to crack growth rate) under which the crack was synthesized, the tightness of the crack closure, and the initial crack length. Furthermore, we showed that crack propagation during sonic IR testing occurs for 2024 aluminum, titanium and 304 stainless steel specimens. In this study, we extend the range of experimental conditions for synthesizing cracks to further elucidate their effect on the crack propagation, and we focus more specifically on the stress intensity factor. The stress intensity factor not only determines the rate of crack growth, but it has two profound effects on crack characteristics: the establishment of plastic zones around the crack tip and the variation of the topography of the mating crack surfaces. These two factors strongly affect crack propagation.

Original languageEnglish (US)
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Subtitle of host publicationVolume 26
Pages507-514
Number of pages8
Volume894
DOIs
StatePublished - May 14 2007
EventREVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION - Portland, OR, United States
Duration: Jul 30 2006Aug 4 2006

Other

OtherREVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION
CountryUnited States
CityPortland, OR
Period7/30/068/4/06

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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