The Variation Patterns of Resin Modulus in Composite under Different Curing Process Parameters

Xiaojun Cui; Shuxian Chen; Qinying Kang

doi:10.6919/ICJE.202412_10(12).0018

Authors

Xiaojun Cui
Shuxian Chen
Qinying Kang

DOI:

https://doi.org/10.6919/ICJE.202412_10(12).0018

Keywords:

Composite Materials; Thermal Curing; Elastic Modulus; Shear Modulus.

Abstract

To investigate the effects of curing process parameters on the elastic modulus and shear modulus of resin in the composite, a finite element model for the scarf repair of curved laminated plates was established based on the thermochemical and mechanical models of composite materials, as well as the linear elastic constitutive relation. Simulation calculations were conducted for different heating and cooling rates. The variation process and development patterns of the resin's elastic modulus and shear modulus were investigated. The results indicate that the onset of the increase in resin elastic modulus and shear modulus is advanced with increasing the heating rate and the resin modulus under a heating rate of 3.5 K/min begins to change approximately 3000 seconds earlier than at a heating rate of 1.5 K/min, reducing the total curing time by about 20%. And the cooling rate has no impact on the variation patterns or the development process of the resin's elastic modulus and shear modulus.

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