Title: Effects of processing parameters on material responses during in-situ filament winding of thermoplastic composites

Authors: M.N. Ghasemi Nejhad, J.W. Gillespie Jr., R.D. Cope

Addresses: Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu HI 96822, USA. ' Department of Mechanical Engineering, and Center for Composite Materials, University of Delaware, Newark DE 19716, USA. ' Department of Mechanical Engineering, and Center for Composite Materials, University of Delaware, Newark DE 19716, USA

Abstract: The in-situ thermoplastic composite filament winding process employs a localized, on-line, and continuous melting/solidification technique which can reduce the residual stresses and allow for improved dimensional stability and performance. During the processing of thermoplastic composite materials, thermal expansion and crystallization shrinkage strains contribute to changes in the material specific volume and represent important sources of internal loadings/stresses. This work employs three-dimensional anisotropic thermal and stress analyses to present the effects of winding angle and matrix modulus on the effective coefficient of thermal expansion as well as process-induced stresses and deformations of the parts during in-situ filament winding of a thermoplastic composite, APC-2. The results show that the processing parameters have significant effects on the material responses of the parts being wound using this manufacturing technique.

Keywords: composite processing; process parameters; concurrent engineering; filament winding; thermoplastic composites; simultaneous engineering; melting; solidification; residual stress; stress analysis; thermal expansion; crystallization shrinkage; strain; winding angle; matrix modulus; deformation.

DOI: 10.1504/IJMPT.1994.036418

International Journal of Materials and Product Technology, 1994 Vol.9 No.1/2/3, pp.183 - 214

Published online: 03 Nov 2010 *

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