B. Guichet et al., A STUDY OF THE MICROMECHANICAL PUSH-OUT TEST - RESPONSE OF AN SCS-6 TI-6242 COMPOSITE/, Composites science and technology, 58(5), 1998, pp. 665-670
Push-out tests have been performed on unidirectional SiC-fibre/Ti-6242
-matrix composites, with samples of variable thickness and fibre volum
e fraction. Experimental results show the existence of two distinct de
cohesion types. SEM observations establish that these two types are ch
aracterised by two decohesion sires. Since these mechanisms appear to
be linked with geometrical parameters, a finite-element analysis has b
een developed. This allows us to evaluate the stress field induced by
the material manu facture process, the preparation of the sample and t
he test itself. Two mechanisms are proposed to explain both types of b
ehaviour. (C) 1998 Published by Elsevier Science Ltd. All rights reser
ved.