This paper describes the materials and the methods used to make a tensile test of composite materail. The experimental study is conducted to observe the crashing behavior of composite material using different types of material namely; glass/epoxy carbon/epoxy and jute/epoxy specimens. Then, the behavior of the composite specimens is observed to determine the best material that produced the highest mechanical properties to be used as a material for a straight bevel gear in robotic arm application. The experimental work has been divided into two stages. The first stage is the experimental process, which involves fabrication of the specimens for the tensile test. The second stage is the preparation of specimens for the tensil test.