Tensile Testing
The properties of the composite material we have needs to be determined, and several properties can be taken from the vendor, but there are many more that depend on the method of preparation and the specific conditions of the manufacturing method. To add to this problem, different batches can differ in different properties, and for critical applications, it is important to know the quality of the batch being used. A tensile test will be used to obtain many properties at once, making it the most useful test in the batch of tests.
Properties Obtained from a Tensile Test
- EL - Longitudinal modulus of the composite
- ET - Transverse modulus of the composite
- σLU - Ultimate longitudinal modulus of the composite
- σTU - Ultimate transverse modulus of the composite
Specimen Design
The specimen used will be a dogbone shaped specimen, and it will be made with 8-16 plies. It should have a length of ~150mm. The ends need to be manufactured of different materials since it may be difficult to use the epoxy in the tensile tester.
Specimen Manufacturing Procedure
Test Preparation Procedure
Testing Procedure
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