Tensile Strength Analysis of Composite Reinforced Petung Bamboo Woven (Dendrocalamus Asper

This study aims to analyze the tensile strength and changes in the micro structure of epoxy resin composite reinforced petungbamboo strip woven (Dendrocalamus asper). The material used in this studied is the type of petung bamboo Petung bamboo is cut in strips with a length of 30 cm and a thickness of 1 mm, then woven. Woven bamboo strips immersed in water with varying levels of salinity (10, 20, and 30‰) and variations in immersion time 2, 4, 6, and 8 weeks. Immersion bamboo strips are used as composite reinforcement. Epoxy resin is used as a matrix. Composites are molded by varying the number of layers of woven bamboo strips, respectively 1, 2, and 3 layers. Tensile testing is carried out with reference to ASTM 638-02 standard. From the results of the study, it was found that the effect of immersion time and salinity level significantly affected the tensile strength of composites reinforced by woven petung bamboo strips. The highest tensile strength occurs in the reinforcement of petung bamboo strip 3 lays and level of salinity 10‰, with an immersion time of 2 weeks of 65.479 MPa. The lowest tensile strength occurs at immersion time 8 weeks value of 49.421 MPa.