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Mixed mode stress intensity factors for semielliptical surface cracks (1974)

Smith, F. W. ; Sorensen, D. R.

In: CASI

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Publication Date: 2019-06-27

Description: The three-dimensional equations of elasticity are solved for a flat elliptical crack which has nonuniform shear stresses applied to its surfaces. An alternating method is used to determine the mode two and mode three stress intensity factors for a semielliptical surface crack in the surface of a finite thickness solid. These stress intensity factors are presented as a function of position along the crack border for a number of crack shapes and crack depths. This same technique is followed to determine the mode one stress intensity factors for the semielliptical surface crack which has normal loading applied to its surface. Mode one stress intensity factors are presented and compared with the results obtained from previous work.

Keywords: STRUCTURAL MECHANICS

Type: NASA-CR-134684

Format: application/pdf

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