How to determine Creep for Polymer composites ?

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Suganth Velumani

Creep is a phenomenon in which a material deforms under a sustained load over time. In polymer composites, creep can be influenced by a variety of factors, including the type and concentration of the reinforcement fibers, the matrix material, the processing conditions, and the loading conditions. To determine the creep behavior of polymer composites, you can follow these general steps:

Prepare the samples: Cut the composite samples into small, thin specimens that are suitable for testing. The samples should be prepared according to the specific requirements of your testing method, such as the size, shape, and thickness of the specimens.

Apply the load: Use a testing machine, such as a tensile tester or a compression tester, to apply a sustained load to the samples at a constant rate. The load should be applied at a constant temperature and humidity, and should be maintained for a specified period of time.

Measure the deformation: Use a displacement sensor or other device to measure the deformation of the samples over time. The deformation may be measured as a change in length, width, or thickness, depending on the type of load applied and the specific requirements of your testing method.

Analyze the results: Use the deformation data to calculate the creep behavior of the composite materials. This may involve fitting the data to a specific creep model, such as the power law model or the exponential model, to determine the creep parameters (e.g., the creep modulus and the time exponent).

It is important to carefully follow the specific procedures and techniques for measuring creep in polymer composites, as the accuracy and reliability of the results will depend on the quality of the measurements and the correctness of the analysis. It may also be helpful to consult with experts or review the relevant literature to ensure that you are using the appropriate method and techniques for your specific materials and application.

Mohsin Sattar

Power Law multiplier