Experimental Determination of for Hollow Rectangular Tubes Containing Corner Cracks

ME McDermott; RI Stephens

doi:10.1520/STP34945S

SYMPOSIA PAPER Published: 01 January 1979

STP34945S

Experimental Determination of for Hollow Rectangular Tubes Containing Corner Cracks

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This research used the fatigue crack growth rate experimental method to obtain K_I for an initial circular corner crack in a hollow rectangular tube subjected to pure bending. Reference crack growth rate data were obtained using compact tension (CT), single edge notch (SEN) and four-point (4-pt) bend specimens. Three mild steel tube height-to-width ratios, h/w (2/3, 1, and 3/2) were tested. K_I was obtained for both top face and side face cracks within 30 percent experimental deviation for the three h/w ratios. Least square conservative upper bound equations were obtained. The conservative upper bound results are pro|posed as general K_I expressions applicable to design situations.

Author Information

McDermott, ME

University of Iowa, Iowa City, Iowa

Stephens, RI

University of Iowa, Iowa City, Iowa

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Details

Developed by Committee: E08

Pages: 719–733

DOI: 10.1520/STP34945S

ISBN-EB: 978-0-8031-4746-1

ISBN-13: 978-0-8031-0364-1

Experimental Determination of for Hollow Rectangular Tubes Containing Corner Cracks

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