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International Journal of Material Forming

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01-12-2013 | Original Research

A multi-scale analysis of local stresses development during the cure of a composite tooling material

Authors: E. Lacoste, K. Szymanska, S. Terekhina, S. Fréour, F. Jacquemin, M. Salvia

Published in: International Journal of Material Forming | Issue 4/2013

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Abstract

This paper is dedicated to the cure of an in-plane isotropic carbon-epoxy tooling material presenting a specific mesostructure. Eshelby-Kröner self-consistent model (EKSC) is used to achieve a two-steps scale transition procedure, allowing relating microscopic to macroscopic properties of the material, and estimating its multi-scale mechanical states. This procedure is used to predict the local residual stresses due to thermal and chemical shrinkage of the resin, depending on the manufacturing process conditions. An experimental investigation provides the BMI resin cure kinetics and mechanical properties as a function of the temperature and conversion degree. The consequences of these evolutions on the local mechanical states are investigated and discussed.

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Title: A multi-scale analysis of local stresses development during the cure of a composite tooling material
Authors: E. Lacoste
K. Szymanska
S. Terekhina
S. Fréour
F. Jacquemin
M. Salvia
Publication date: 01-12-2013
Publisher: Springer Paris
Published in: International Journal of Material Forming / Issue 4/2013
Print ISSN: 1960-6206
Electronic ISSN: 1960-6214
DOI: https://doi.org/10.1007/s12289-012-1100-0

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