SYMPOSIA PAPER Published: 01 January 1997
STP16228S

Integral Under Plane Stress Crack Growth

Source

The Tϵ* integral values associated with stable crack growth in A606 HSLA steel SEN specimens were determined experimentally and numerically. The displacement fields obtained through Moiré interferometry and elastic-plastic finite element analysis were used to evaluate Tϵ* associated with the moving crack tip. Tϵ* decreased with the reduction in the size of the integration contour, Tϵ, and continually increased with stable crack growth in this specimen. The measured and computed crack-tip opening angle (CTOA), on the other hand, was a constant 15° during stable crack growth after dropping from the measured and computed initial high values of 35 and 57°, respectively.

Author Information

Omori, Y
University of Washington, Seattle, WA
Okada, H
Georgia Institute of Technology, Computational Modeling Center, Atlanta, GA
Ma, L
University of Washington, Seattle, WA
Atluri, SN
Georgia Institute of Technology, Computational Modeling Center, Atlanta, GA
Kobayashi, AS
University of Washington, Seattle, WA
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Details
Developed by Committee: E08
Pages: 61–71
DOI: 10.1520/STP16228S
ISBN-EB: 978-0-8031-5355-4
ISBN-13: 978-0-8031-2412-7