TESTSCOMPOSITE TESTSIntroductionMaterials are often chosen to meet certain structural or loading requirements. To optimally exploit the necessary properties and the material used, two or more materials can be combined to achieve the desired properties. Early metals were combined to produce alloys with suitable properties. But as the requirements became more and more stringent, it was discovered that the necessary properties could be achieved by combining chemically different materials to create a new material with the desired properties. The objective of composite mechanical testing is to determine the mechanical parameters such as strength and stiffness used to design and find a suitable application for the composite. These tests are performed according to the ASTM standard procedure in a controlled environment. Mainly mechanical tests include three basic tests which are: Tensile test Bending test Impact test. To carry out this test, each test has certain specifications that must be met, initially the composite is made to the required size and then the suitable equipment is found to fix the composite. to the machine to perform the test. The test is performed in high-precision temperature-controlled equipment. Given advantages such as low weight versus strength and toughness, laminate composites are now used in a wide range of applications. Their increasing use has highlighted the need to understand their primary mode of failure TENSILE TEST This is the basic mechanical test with...... middle of the paper...... bending modulus at around 0.50 volume fraction of fiber. It is observed that the flexural strength of all fibers considered in the present study increases with volume fraction in the order of sisal, coir and sisal-coir composite. IMPACT TEST Introduction Impact testing is used to measure a material's resistance to failure to suddenly applied force or instantaneous impact. Notched impact is a single-point test that measures the resistance of materials to the impact of a swinging pendulum. The impact Izod is referred to as the kinetic energy required to initiate fracture and continue fracture until specimen failure. Impact testing is used to measure a material's resistance to breakage to suddenly applied force or instantaneous impact