Abstract
A Composite is a combination of two or more materials that have different properties so that it becomes a new material with different properties. The materials used in this study were polyester putty and palm fiber. Composites are durable, rust-resistant, and very strong. The purpose of this study is to determine the tensile strength, analyze the surface of the specimen using a scanning electron microscope, and be able to reduce the temperature in the car room. In the manufacture of composite tensile test specimens, it refers to the A370 standard with a size of 200 mm x 20 mm x 3 mm. In the tensile test, the average maximum stress was 0.769 kgf/cm2 and the average yield stress was 0.755 kgf/cm2. The calorimeter test uses the ASTM D5865 testing standard so that the absorbed heat is 20.8269 oC. In testing the scanning electron microscope using the ASTM A673 testing standard with 1000 times magnification.
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