Linear analysis of mechanics of single and multiple cracks at fiber/matrix interface using axisymmetric model

• Published in: Materials in engineering Vol. 32; no. 4; pp. 2490 - 2495
• Main Authors: Bouchikhi, A.S., Megueni, A., Lousdad, A., Reffessi, K.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2011
• Subjects: Axisymmetric; Bonding; Cracks; Deflection; Deviation; Energy release rate; Fibers; Fibre; Fibres; Fracture mechanics; Mathematical analysis; Mathematical models
• ISSN: 0261-3069
• DOI: 10.1016/j.matdes.2010.10.029

► The criterion is useful for the realistic composites with finite fiber volume fractions and finite crack sizes. ► The possibility of utilizing the flaw size of the fiber as a crack extension for both deflected and penetrating cracks. ► Comparison between energy release rate at crack with a single deviation and double deviation. It is well known that the life of material composite depends on the hardness of the interface between the fiber and the matrix. Herein, the aim of this work is the calculation by finite element method interaction effect between a crack and an interface by energy release rate approach. The first part of this work is devoted to the crack normal to the interface and the second one deals with the crack terminated at the interface. In this study, two cases are considered using a copper matrix with different fibers. An axisymmetric model has been used to evaluate the conditions for the crack deflection/penetration by the interface as well as the effects of the volume percent of fibers and the effects of the distance between the crack tip and the interface were highlighted as well as the effects of the elastic properties of two bonded materials.