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Study of the damaging mechanisms of a carbon - carbon composite bonded to copper under thermomechanical loading; Etude des mecanismes d'endommagement d'un assemblage cuivre / composite carbone - carbone sous chargement thermomecanique

Abstract

The purpose of this work is to understand and to identify the damaging mechanisms of Carbon-Carbon composite bonded to copper under thermomechanical loading. The study of the composite allowed the development of non-linear models. These ones have been introduced in the finite elements analysis code named CASTEM 2000. They have been validated according to a correlation between simulation and mechanical tests on multi-material samples. These tests have also permitted us to better understand the behaviour of the bonding between composite and copper (damaging and fracture modes for different temperatures) under shear and tensile loadings. The damaging mechanisms of the bond under thermomechanical loading have been studied and identified according to microscopic observations on mock-ups which have sustained thermal cycling tests: some cracks appear in the composite, near the bond between the composite and the copper. The correlation between numerical and experimental results have been improved because of the reliability of the composite modelization, the use of residual stresses and the results of the bond mechanical characterisation. (author)
Authors:
Publication Date:
Jun 15, 1999
Product Type:
Thesis/Dissertation
Report Number:
FRCEA-TH-767
Resource Relation:
Other Information: TH: These Mecanique; [100 refs.]
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; C CODES; CARBON; COMPOSITE MATERIALS; COPPER; CRACKS; FINITE ELEMENT METHOD; FRACTOGRAPHY; HEAT TREATMENTS; MECHANICAL TESTS; MICROSTRUCTURE; NONDESTRUCTIVE TESTING; OPTIMIZATION; RESIDUAL STRESSES; RUPTURES; SCANNING ELECTRON MICROSCOPY; SHEAR; STRAIN HARDENING; SYNTHESIS; TEXTURE; TORE SUPRA TOKAMAK; VALIDATION; YOUNG MODULUS
OSTI ID:
21329064
Research Organizations:
CEA/Cadarache, Dept. de Recherches sur la Fusion Controlee (DRFC), 13 - Saint-Paul-lez-Durance (France); Bordeaux-1 Univ., 33 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR0003132044760
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
143 pages
Announcement Date:
Aug 09, 2010

Citation Formats

Moncel, L. Study of the damaging mechanisms of a carbon - carbon composite bonded to copper under thermomechanical loading; Etude des mecanismes d'endommagement d'un assemblage cuivre / composite carbone - carbone sous chargement thermomecanique. France: N. p., 1999. Web.
Moncel, L. Study of the damaging mechanisms of a carbon - carbon composite bonded to copper under thermomechanical loading; Etude des mecanismes d'endommagement d'un assemblage cuivre / composite carbone - carbone sous chargement thermomecanique. France.
Moncel, L. 1999. "Study of the damaging mechanisms of a carbon - carbon composite bonded to copper under thermomechanical loading; Etude des mecanismes d'endommagement d'un assemblage cuivre / composite carbone - carbone sous chargement thermomecanique." France.
@misc{etde_21329064,
title = {Study of the damaging mechanisms of a carbon - carbon composite bonded to copper under thermomechanical loading; Etude des mecanismes d'endommagement d'un assemblage cuivre / composite carbone - carbone sous chargement thermomecanique}
author = {Moncel, L}
abstractNote = {The purpose of this work is to understand and to identify the damaging mechanisms of Carbon-Carbon composite bonded to copper under thermomechanical loading. The study of the composite allowed the development of non-linear models. These ones have been introduced in the finite elements analysis code named CASTEM 2000. They have been validated according to a correlation between simulation and mechanical tests on multi-material samples. These tests have also permitted us to better understand the behaviour of the bonding between composite and copper (damaging and fracture modes for different temperatures) under shear and tensile loadings. The damaging mechanisms of the bond under thermomechanical loading have been studied and identified according to microscopic observations on mock-ups which have sustained thermal cycling tests: some cracks appear in the composite, near the bond between the composite and the copper. The correlation between numerical and experimental results have been improved because of the reliability of the composite modelization, the use of residual stresses and the results of the bond mechanical characterisation. (author)}
place = {France}
year = {1999}
month = {Jun}
}