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Experimental determination and empirical representation of out-of-plane displacements in a cracked elastic plate loaded in mode I

Abstract : A Michelson interferometer is applied to a mode I fracture mechanic problem to investigate the out-of-plane displacement near the crack tip. For an elastic cracked plate, it appears that the two-dimensional theory predicts correctly the free-stress surface displacement only in a region greater than half the specimen thickness. Combining this two-dimensional solution and the measurements provided by the interferometer, the out-of-plane displacement is likewise accessible inside the previous region where the state of stress is three-dimensional. A mathematical formulation, using an exponential integral function is then proposed to describe the out-of-plane surface displacement in the measurement area around the crack tip.
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https://hal.archives-ouvertes.fr/hal-00264002
Contributor : Laurent Humbert Connect in order to contact the contributor
Submitted on : Thursday, March 13, 2008 - 5:06:36 PM
Last modification on : Wednesday, February 2, 2022 - 4:09:55 PM

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Laurent Humbert, Valery Valle, Mario Cottron. Experimental determination and empirical representation of out-of-plane displacements in a cracked elastic plate loaded in mode I. International Journal of Solids and Structures, Elsevier, 2000, pp.5493-5504. ⟨10.1016/S0020-7683(99)00210-3⟩. ⟨hal-00264002⟩

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