Author(s)

S. Corradi, J.M. Kenny, M. Marchetti & D. Vahedi

Abstract

Interaction between a main-crack and a collinear micro-crack or two parallel micro-cracks S. Corradi/ J.M. Kenny/ M. Marchetti," D. Vahedi" * Aerospace Department, University of Rome, 00184 Rome, Italy ABSTRACT The analysis of the interaction of a main crack with an array of microcracks, placed near the tip of the main crack, has been performed considering 2-D polycarbonate flat specimens. Analytical results, based on the elastic potential theory for the stress intensity factor K, have been well compared with experimental results obtained through the application of the caustic method. Two different specimen configurations have been analysed involving one and two microcracks. INTRODUCTION The problem of the interaction of a main crack with an array of microcracks placed near its tip, of strong relevance in the prediction of the reliability of structural materials, can be experimentally analyzed by applying the caustic method on 2-D specim

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