Investigation on the Fracture Energy of GFRP

Abstract

The size reduction of waste polymer and composite materials has become an important subject in the field of waste reclamation.
Therefore a fundamental investigation was carried out on the impact fracture energy of Glass Fibre Reinforced Plastic (GFRP) by using ten kinds of GFRP whose matrix and reinforcements are different.
(GFRP) by using ten kinds of GFRP whose matrix and reinforcements are different.
The fracture energy was determined by means of Charpy impact test. Both propagation energy and fracture initiation energy were determined by using the system illustrated Fig. 6.
The results obtained are as follows:
(1) The impact fracture energy for Roving cloth GFRP increased with increasing interlaminer shear strength, bur that for Chopped strand mat GFRP decreased with increasing interlaminer shear strength.
(2) The fracture initiation energy increased with increasing interlaminer shear strength and Glass fiber content.
(3) The crack propagation energy decreased with increasing interlaminer shear strength.
(4) The Interlaminer shear strength increased with fracture surface energy of matrix.