Abstract: In this study, the adhesion strength and the energy release rate measured using defragment test for non-woven three kinds of unidirectional laminate composite specimens reinforced by carbon, Kevlar and glass fibers with fiber volume fraction ratio 4.8%, the direction of fiber in angles: 0°, 45°, 90° with the loading direction, all samples post cured at temperature 25°C. From results, the high value of strength and the energy release rate of laminate composite specimen is at 0° direction for each kind of specimens while the high value of strength and the energy release rate of laminate composite for all kinds of specimens found in epoxy reinforcement Kevlar.
Hisham Mohammed Ali Hasan and Zaineb Maeh Ismaeel, 2018. The Effect of Fiber Direction on the Adhesion Strength and Energy Release Rate in Epoxy Composite using Defragment Test. Research Journal of Applied Sciences, 13: 328-331.