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Stress intensity factors for deep cracks emanating from the corner formed by a hole intersecting a plate surface (1974)

Mcgowan, J. J. ; Smith, C. W.

In: CASI

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Publication Date: 2019-06-27

Description: A technique consisting of freezing photo-elasticity and a numerical method was used to obtain stress intensity factors for natural cracks emanating from the corner at which a hole intersects a plate surface. Geometries studied were: (1) crack depth to thickness ratios of approximately 0.2, (2) 0.5 and 0.75; (3) crack depth to crack length ratios of approximately 1.0 to 2.0; and (4) crack length to hole radius ratios of about 0.5 to 2.0. All final crack geometries were grown under monotonic loading and growth was not self similar, with most of the growth occuring through the thickness under remote extension. Stress intensity factors were determined at the intersection of the flaw border.

Keywords: STRUCTURAL MECHANICS

Type: NASA-CR-132484 , VPI-E-74-1-REV

Format: application/pdf

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