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RESEARCH PAPERS

Corner Crack at the Bore of a Rotating Disk

[+] Author and Article Information
A. S. Kobayashi, N. Polvanich, A. F. Emery, W. J. Love

University of Washington, Department of Mechanical Engineering, Seattle, Wash.

J. Eng. Power 98(4), 465-470 (Oct 01, 1976) (6 pages) doi:10.1115/1.3446217 History: Received April 04, 1975; Online July 14, 2010

Abstract

Stress intensity factors of corner cracks at the bore of a rotating disk are estimated from the stress intensity factor of a quarter-elliptical crack in a quarter infinite solid and pressurized by the hoop stress. Curvature effect of the bore is incorporated through a curvature correction factor derived from the stress intensity factors of a single edge-cracked bore in a large plate and a single edge-cracked semi-infinite plate. Stress intensity factors for quarter-elliptical cracks with crack aspect ratios of b/a = 0.2, 0.4, and 0.98 at crack depths of b/Ri = 0.1, 0.3 and 1.0 in a rotating disk with R0 /Ri = 8 are determined. Application of the developed procedure to corner crack problems at a through-bolt hole is indicated.

Copyright © 1976 by ASME
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