2021
DOI: 10.1177/0021998321992423
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Comparative study on the effect of cure parameters on residual deformation for thermoset composite laminates

Abstract: Process-induced deformation in composite laminates usually occurs during the curing process and is strongly dependent on the cure parameters. To study the influence of the cure parameters on the warpage deformation, an experimental study was carried out with different heating rates and first dwell times. The full-field process-induced deformation was captured by contactless 3 D scanning system to validate the numerical method. Second, a multi-scale thermo-viscoelastic modeling technique was employed to predict… Show more

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Cited by 11 publications
(4 citation statements)
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“…During the curing process, the volume of the resin decreases because of the chemical cross-linking reaction. The chemical shrinkage strain of an isotropic homogeneous resin can be characterized as follows: where is the volume resin reduction and equals to −0.03 [ 29 ]. This indicates that the effective thermal expansion and cure shrinkage of composites are impacted by the properties of their constituents and their volumetric proportions.…”
Section: Multiscale Modeling Processmentioning
confidence: 99%
See 1 more Smart Citation
“…During the curing process, the volume of the resin decreases because of the chemical cross-linking reaction. The chemical shrinkage strain of an isotropic homogeneous resin can be characterized as follows: where is the volume resin reduction and equals to −0.03 [ 29 ]. This indicates that the effective thermal expansion and cure shrinkage of composites are impacted by the properties of their constituents and their volumetric proportions.…”
Section: Multiscale Modeling Processmentioning
confidence: 99%
“…where ν re is the volume resin reduction and equals to −0.03 [29]. This indicates that the effective thermal expansion and cure shrinkage of composites are impacted by the properties of their constituents and their volumetric proportions.…”
Section: Viscoelastic Constitutive Modelmentioning
confidence: 99%
“…The composite laminate is restrained to the tool during curing, and the surface is covered with vacuum bags. Therefore, it can be assumed that ε 0 = κ = 0 in Equation (9). The incremental internal forces (∆N E ) and moments (∆M E ) due to the temperature and cure shrinkage of resin can be recalculated as:…”
Section: Curing Deformation Without Consideration Of Tool Constraintsmentioning
confidence: 99%
“…[ 5 , 6 , 7 , 8 ]. Considering the importance of experimental research, Liu et al [ 9 ] carried out several experimental studies to investigate the effect of heating rates and first dwell time on the curing deformation of thermoset composite laminates. Yu et al [ 10 ] designed a series of experiments to investigate residual stresses in epoxy-steel systems due to curing shrinkage, varying thermal shrinkage and hygroscopic expansion, and obtained the relationship between residual stresses and deformation.…”
Section: Introductionmentioning
confidence: 99%