WIT Press


Parameters Controlling The Numerical Simulation Validity Of Damageable Composite Toughness Testing

Price

Free (open access)

Paper DOI

10.2495/CMEM950811

Volume

12

Pages

8

Published

1995

Size

787 kb

Author(s)

S. Yotte, C. Currit, E. Lacoste & J.M. Quenisset

Abstract

Assuming that CMC's toughness can be assessed through crack growth resistance curves, a procedure of testing has been proposed. Despite various approximations which are pointed out, the use of the finite element method is shown to be helpful to define the specimen shape and loading conditions. More particularly, an initial procedure based on the CT test is modified to prevent various perturbations related to brinelling effects or compressive damage and to generate steady state crack propagations. 1. introduction Ceramic matrix composites are now well known for their quasi damageable elastic behaviour. This fact renders difficult their toughness characterisation through an intrinsic characteristic. As a matter of fac

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