Impact toughness of notched composite material jute/polyester

International Conference and Exhibition on Materials Chemistry

March 31-April 01, 2016 Valencia, Spain

Djeghader Djamel and Redjel Bachir

University of Badji Mokhtar, Algeria
University of Mes Saddik Ben Yahia, Algeria

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

In recent years, the use of composite materials reinforced with natural fibers has been the subject of several studies to provide a possible replacement of ceramic reinforced in composite material. They are renewed, recyclable, less abrasive and lightweight. In this study, Impact Charpy tests were carried out on prismatic samples with lateral notches of different depths of a polyester matrix composite material, reinforced with three layers of bidirectional jute fibers corresponding to a rate of 40%. Three distances between supports were tested: 40 mm, 60 mm and 70 mm. The tests were performed in 3 points bending with an impact velocity of 3.85 m/s and a pendulum of 7.5 joules. The Williams method based on the principles of linear elastic fracture mechanics was used to interpret these results and yielded an estimate of the fracture energy and toughness GIC intrinsic parameter of this material from the total energy U dissipated during impact. The impact energy U measurement results according to BDÃ?Â? for all notched specimens tested for the three distances between support 3 used are characterized by a high dispersion of data points around the linear regression line. This dispersion characteristic of composite materials is a consequence mainly of the heterogeneity of the material in the path of the cracking and of the dispersion of the mechanical test itself. The impact toughness GIC decreases with increasing distance between supports.

Biography :

Email: djameldjeghader@yahoo.fr