Smart cure cycle with cooling and reheating for co-cure bonded steel/carbon epoxy composite hybrid structures for reducing thermal residual stress

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In this work, a smart cure cycle with cooling and reheating for co-cure bonded steel/carbon epoxy composite hybrid structures was developed to reduce the fabricational thermal residual stress between the steel and carbon epoxy composite material. The thermomechanical properties of the high modulus carbon epoxy composite were measured by a Differential scanning calorimetry (DSC) and rheometer to obtain the optimal time to apply the cooling operation. The static lap shear strength of the co-cure bonded steel/composite lap joints and tensile strength of the composite specimen were measured to investigate the effect of cure cycle on the thermal residual stress. Also, the deflection of the hybrid structures was measured to measure the actual cure temperature with respect to various cure cycles. From the experiments, it was found that the smart cure cycle with cooling and reheating not only reduced the fabricational thermal residual stress but also improved the strength and dimensional accuracy of the hybrid structures. (c) 2005 Elsevier Ltd. All rights reserved.
Publisher
ELSEVIER SCI LTD
Issue Date
2006
Language
English
Article Type
Article
Keywords

DESIGN; JOINT

Citation

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, v.37, no.10, pp.1708 - 1721

ISSN
1359-835X
DOI
10.1016/j.compositesa.2005.09.015
URI
http://hdl.handle.net/10203/88631
Appears in Collection
ME-Journal Papers(저널논문)
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