Acoustic response in warp/fill direction of GRP laminates

Abstract

The objective of the present work is to study the acousto-ultrasonic response in the warp and fill directions of glass fire reinforced plastic (GRP) laminate composites with the effect of gain, threshold voltage and to predict the relationship of stress wave factor with flexural strength and flexural modulus. The results reveal that a nonlinear (exponential) relationship exists between stress wave factor and flexural strength as well as flexural modulus. © 1992.