Mechanisms generating residual stresses and distortion during manufacture of polymer-matrix composite structures

MR Wisnom*, M Gigliotti, N Ersoy, M Campbell, KD Potter

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

233 Citations (Scopus)

Abstract

The mechanisms causing residual stresses and distortions are considered, and the way they develop during the cure discussed. Experimental results are presented through the cure cycle on curvature of unsymmetric laminates, spring-in of curved sections and stresses in flat plates due to tool-part interaction. It is shown that thermal stresses after vitrification are the main cause of distortion of unsymmetric plates, whereas thermal stresses and chemical shrinkage, while the material is in the rubbery state, both contribute to spring-in. Large stresses can develop due to tool-part interaction, even before gelation. (c) 2005 Elsevier Ltd. All rights reserved.

Translated title of the contributionMechanisms generating residual stresses and distortion during manufacture of polymer-matrix composite structures
Original languageEnglish
Pages (from-to)522-529
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume37
Issue number4
DOIs
Publication statusPublished - Apr 2006
EventEUROMECH 453 Colloquium on Internal Stresses in Polymer Composite Processing and Service Life - Paris, France
Duration: 1 Dec 20033 Dec 2003

Bibliographical note

Publisher: Elsevier
Other identifier: JCOMA1595

Keywords

  • polymer-matrix composites (PMCs)
  • residual/internal stress
  • process monitoring
  • cure distortion
  • SHRINKAGE
  • MODEL
  • SHAPE
  • CURE

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