✦ LIBER ✦

On crack opening stress level in fatigue by Eddy current technique

✍ Scribed by K.M. Lal

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 272 KB
Volume: 12
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(79)90111-5

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✦ Synopsis

Linear elastic fracture mechanics relates fatigue crack growth with the stress intensity factor at the crack tip. Presence of residual deformations at the tip of a fatigue crack reduces the crack tip stress intensification such that effective stress intensity range AK~ = U-AK. In this paper use of eddy current technique is exhibited to find the values of test value of effective stress range factor Ut, st. A reasonable comparison between computed and experimental results of UI and Utc~t on two AI alloys 6061-T6 and 6063-T6 has recommended the Eddy Current Technology for finding out the values of crack opening stress level under given loading conditions.

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