Single fibre transverse debonding: stress analysis of the Broutman test

The paper presents an extended analytical approach for the interfacial tran sverse stress that is generated by the Broutman test specimen under compres sion, The analysis is based on the division of the specimen into a bulk reg ion and a near fibre region. Treating separately each region a compound equ ation for the interfacial stress can be derived. The equation also includes residual thermal stress and fibre anisotropy. A 3D finite element model wa s used to validate the approach. The calculations are performed for two com monly used material systems (carbon/glass fibre, epoxy resin). A comparison between the finite element results and the analytical solutions indicates that the accuracy of the analytical approach is very food. (C) 2000 Elsevie r Science Ltd. All rights reserved.