Describe about the typical laboratory compression test?
Describe about the typical laboratory compression test?
A compression test is any test in which a substance encounters forces that move the specimen from opposite sides inward or are otherwise stretched, wedged, crushed, or compressed. The test sample is usually positioned between two plates that spread the load applied over the entire surface area of the test sample's two opposite faces and then the plates are forced together by a universal test machine that causes the sample to flatten. A compressed sample is normally condensed in the direction of the forces applied, and extends perpendicular to the force in the direction.Essentially, a compression test is the opposite of the more common stress test.
Purpose of Compression test
A compression test attempts to assess a material 's behavior or reaction when undergoing a compressive load by evaluating fundamental variables, such as pressure , stress, and deformation. The compressive strength, yield power, ultimate strength, elastic maximum, and elastic modulus can all be calculated by measuring a material in compression, among other parameters.Through knowing these various criteria and the values associated with a particular material, it is possible to decide if the material is appropriate for specific applications or if it will fail under the specified stresses.
Types of Compression Test
For general, a compression test for a substance requires at least two opposing forces directed at each other that are applied to the opposite side of the test sample in order to compress the sample. Nonetheless, this simple test setup has several different variants, involving any number of different variables.The more specific compression measurements include pressures applied to more than one specimen axis, as well as sample processing at elevated and lower temperatures. Definitions of different compression tests that can be conducted on a material include uniaxial, biaxial, triaxial, cold temperature , high temperature, fatigue, and creep.
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