LOW VELOCITY IMPACT BEHAVIORS OF BASALT/EPOXY REINFORCED COMPOSITE LAMINATES WITH DIFFERENT FIBER ORIENTATIONS

Authors : Özkan ÖZBEK, Ömer Yavuz BOZKURT, Ahmet ERKLİĞ

Pages : 197-202

Doi:10.31127/tuje.644025

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Publication Date : 2020-10-01

Article Type : Research Paper

Abstract :The current study aims to explore the effects of fiber orientation angle on the low velocity impact behaviors of the basalt fiber reinforced composite laminates. Samples with four different orientation angles insert ignore into journalissuearticles values(0º/90º, 15º/-75º, 30º/-60º and 45º/- 45º); fabricated by vacuum assisted resin transfer molding have being tested on the Charpy impact test machine. Furthermore, failure modes of notched/unnotched samples subjected to impact loadings in the flatwise and edgewise directions have been examined to detailly understand fracture behavior. The results showed that the fiber orientation angle has substantial effects on the energy absorption capability and impact toughness of the samples. The increment in fiber orientation angle was led to increases in impact energy and toughness, and the reduction in impact damage. The best values as 3.07 J and 34.82 kJ/m 2 for impact energy and impact toughness, respectively, are obtained from the notched samples in edgewise impact loading that having insert ignore into journalissuearticles values(45º/-45º); fiber orientation angle. Almost all of the samples exhibited failure modes as matrix fragmentation, delamination, fiber cracking and fiber pull-out, respectively. The most destructive results were observed as laminate fracture on the samples having insert ignore into journalissuearticles values(0º/90º); fiber orientation angle.
Keywords : Basalt Fiber, Charpy, Fiber Orientation Angle, Energy Absorption, Impact Toughness