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Analysis of crack-tip Moir� fringe patterns

International journal of fracture, v.21 no.2, 1983년, pp.83 - 106  

Rossmanith, H. P.

Abstract AI-Helper 아이콘AI-Helper

AbstractNear crack-tip displacement fields of static brittle cracks in elastic isotropic homogeneous materials are examined. Simple evaluation formulae for determination of stress intensity factorsK1 andK2 are derived employing characteristic properties of the moiré fringes.Higher order terms...

Abstract

RésuméOn examine les champs de déplacement de fissures fragiles statiques au voisinage de leur extrémité dans des matériaux homogènes isotropes élastiques. En utilisant les propriétés caractéristiques des bandes de moiré, on tire des formules simples d'évaluation pour déterminer les facteurs d'intensité de contraintesK1 andK2.On considére dans l'analyse les termes d'ordre supérieur de la fonction de contrainte de Westergaard; on discute leur effet sur l'apparence générale des bandes de moiré et l'on classe ainsi les apparences de bandes correspondantes. On montre que les configurations des moirés à l'extrémité de la fissure sont influencés par des variations du module de Poisson.

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