Revision as of 20:07, 31 March 2022

Abstract

The study of the damage area extension in laminates made of composite materials that have been subjected to impacts, is a fundamental aspect in the evaluation of the residual properties of this type of materials. In the case of woven E-glass fibre/polyester laminates, the study of the damaged area extension by non-destructive techniques (NDT) can be carried out by visual inspection or ultrasounds. Within the techniques of ultrasonic inspection, the C-Scan type has been established as the primary inspection method. This technique is quite useful in composite laminates since it allows to quantify the total damaged area. However, this technique does not make possible the evaluation of evolution and location of  damage along the thickness, which changes remarkably in thick laminates. For this reason, it is necessary to make use of the B-Scan technique of ultrasonic inspection, whichallows to evaluate the evolution of  damage along the thickness. The aim of this experimental work is to study the evolution of  damage in woven E-glass fibre/polyestes laminates for four different thicknesses.  After being tested, these plates have been inspected through non-destructive inspection techniques (NDT) with ultrasounds (C-Scan and B-Scan) and visual inspection in order to evaluate qualitative and quantitative aspects.

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