Strength Analysis of Composite Materials on Carbon Fiber and Fiber Fiber With Tensile Test

In the era of technological advancement, composite materials have become an important cornerstone in modern industry due to their advantages such as light weight, strength, stiffness, and corrosion resistance. The use of carbon fiber and fiber reinforced polymers, especially with catalysts, has successfully overcome the weakness of brittle fracture in composites and provided a solution for high-performance lightweight structures. Previous research shows the tensile strength of the two fibers has an insignificant difference, but the change in layer arrangement significantly affects the elastic modulus value. Therefore, this study aims to analyze the effect of varying the type and number of fibers on the mechanical strength of composites through tensile testing. The research method used analytical methods and ISO-527 standard specimens, with tensile tests on continuously reinforced carbon fiber composites and glass fiber made from Chopped Strand Mat (CSM) type with a ratio of 1011 polymer matrix and catalyst of 10:1. The results show that the different number of carbon fiber layers in the composite has a significant impact on mechanical properties, especially tensile strength. Sample I , with two layers and carbon fiber content, stood out with high tensile strength (100.76 MPa), low maximum strain (1.76%), and superior elastic modulus (5708.4 MPa). The lowest tensile strength value was found in sample IV (19,877 MPa), which consisted of only one layer and was made from carbon fiber. This confirms that the addition of carbon fiber layers significantly improves the mechanical performance of the composite, highlighting the importance of carbon fiber in improving the tensile strength of the composite. Thus, the selection of the best composite material that promotes optimal mechanical strength, the choice falls on carbon fiber with two layers.Keywords: Carbon fiber, layer, tensile test