Dependence Between Aging Treatments and Residual Stresses on Composite Laminate

Olivier Sicot 1 Xiao-Lu Gong 2 Xiao Jing Gong 1 Abel Cherouat 2 Jian Lu 2
1 LRMA - Laboratoire de Recherche en Mécanique et Acoustique
2 LASMIS - Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée
ICD - Institut Charles Delaunay
Abstract : The objective of this paper is to study the influence of residual stresses due to fabrication conditions on the thermomechanical behavior of carbon/epoxy laminate structures (cross ply). These studied laminates have undergone various cycles of thermal aging. The addition of a post-cure cycle after the end of the initial cycle makes it possible to reduce the residual stresses level. The incremental hole-drilling method is used to measure the residual strain in the laminates. These measured strains and the numerical calibration coefficients obtained by the finite element method allow to calculating the residual stress distribution in composite depth. The obtained results show that heat treatments of composite structures do not lead to an important reduction the initial residual stress due the fabrication conditions.
Keywords : Aging Composite Curing Cycle Hole-Drilling Method Residual Stress
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Journal articles
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https://hal-utt.archives-ouvertes.fr/hal-02276741
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Submitted on : Tuesday, September 3, 2019 - 9:54:31 AM
Last modification on : Monday, September 16, 2019 - 4:36:06 PM

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Olivier Sicot, Xiao-Lu Gong, Xiao Jing Gong, Abel Cherouat, Jian Lu. Dependence Between Aging Treatments and Residual Stresses on Composite Laminate. Materials Science Forum, Trans Tech Publications Inc., 2006, 524-525, pp.813-817. ⟨10.4028/www.scientific.net/MSF.524-525.813⟩. ⟨hal-02276741⟩

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