A method of stress analysis for interfacial properly evaluation in thermoplastic composites

An analysis of stress transfer between the fiber and matrix in a single fib er reinforced composite which is useful to evaluate the effect of the prope rties of the interphase layer between the fibers and matrix is presented. T he model is based on a concentric cylinder and considers an interphase surr ounding the fiber to simulate a surface-treated layer as the product of pro cessing conditions of short fiber reinforced thermoplastic composites. Stre ss and displacement fields in a single fiber composite under uniaxial tensi on in fiber direction are analyzed. The analysis presented here is used to predict the deformation of a short fiber in a thermoplastic composite. The analysis is compared with the experimental results obtained by using the mi cro-grid method. (C) 2000 Elsevier Science SIA. All rights reserved.