Cure Cycle Optimization for the Reduction of Processing-Induced Residual Stresses in Composite Materials-Reference-Cited by-同舟云学术

Cure Cycle Optimization for the Reduction of Processing-Induced Residual Stresses in Composite Materials

Published:1993-12 Issue:14 Volume:27 Page:1352-1378
ISSN:0021-9983
Container-title:Journal of Composite Materials
language:en
Short-container-title:Journal of Composite Materials

Author:

White S.R.¹,Hahn H.T.²

Affiliation:

1. Department of Aeronautical and Astronautical Engineering University of Illinois at Urbana-Champaign Urbana, IL 61801

2. Department of Mechanical, Aerospace and Nuclear Engineering University of California at Los Angeles Los Angeles, CA 90024

Abstract

The control and reduction of processing-induced residual stresses has been investigated by modifying processing conditions for a graphite/BMI composite material. The effects of dwell temperature, dwell time, cool-down rate, cool-down pres sure, and postcure on residual stresses were investigated using unsymmetric cross-ply laminates. The effects on transverse mechanical properties were also measured. Experi mental results have shown that residual stresses can be reduced by as much as 25-30% while retaining or enhancing transverse mechanical properties by curing at lower tempera tures for longer times or utilizing an intermediate low-temperature dwell in three-step cure cycles. Overall process cycle times are not lengthened for three-step curing.

Publisher

SAGE Publications

Subject

Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

Link

http://journals.sagepub.com/doi/pdf/10.1177/002199839302701402

Reference15 articles.

1. The thermal expansion of carbon fibre-reinforced plastics

2. Mechanical property and residual stress development during cure of a graphite/BMI composite

3. White, S.R. and H.T. Hahn 1989. "Cure Cycle Optimization to Reduce Residual Stresses." ASC Fourth Technical Conference on Composite Materials, Oct 2-5, 1989 , Blacksburg, VA, p 137

4. Residual stresses and the optimum cure cycle for an epoxy resin

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