Tensile strength of chopped-fiber reinforced SMC composites with circular cut-outs: Chaturvedi, S.K. and Keshavarz-Valian, A. SAMPE Quarterly Vol 18 No 3 (April 1987) pp 1–9

Abstract

Tensile strength tests conducted on chopped fiber SMC-R50 and SMC-R65 composited were found to exhibit the hole-size effect. The strength predictive models based on the linear elastic fracture mechanics (LEFM), point stress criterion (PSC), and average stress criterion (ASC) are found to be invalid for the R50 material, while for the R65 material the LEFM and PSC criteria do show a good correlation. Although both materials exhibit a brittle type failure, and no discriminating features could be observed, the reasons for the applicability of two predictive models to only R65 material should be attributed to the fact that R65 is a more fiber dominant composite system. 18 references, 12 figures, 2 tables.