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2. Twist compression tester - Wikipedia

   en.wikipedia.org/wiki/Twist_compression_tester

   The Twist Compression Tester ("TCT") is a hydraulically operated bench-top apparatus used to evaluate the level of friction and/or wear between two materials under lubricated or non-lubricated conditions. Under controlled conditions, a rotating annular specimen is brought into contact with a non-rotating flat specimen.

3. Compressive strength - Wikipedia

   en.wikipedia.org/wiki/Compressive_strength

   The compressive strength of the material corresponds to the stress at the red point shown on the curve. In a compression test, there is a linear region where the material follows Hooke's law. Hence, for this region, =, where, this time, E refers to the Young's modulus for compression. In this region, the material deforms elastically and returns ...

4. Container compression test - Wikipedia

   en.wikipedia.org/wiki/Container_compression_test

   The container compression test measures the compressive strength of packages such as boxes, drums, and cans. It usually provides a plot of deformation vs compressive force . It is commonly used to evaluate shipping containers made of corrugated fiberboard as well as wooden boxes and crates .

5. Leak-down tester - Wikipedia

   en.wikipedia.org/wiki/Leak-down_tester

   A compression tester. Leak-down testing is a static test. Leak-down tests cylinder leakage paths. Leak-down primarily tests pistons and rings, seated valve sealing, and the head gasket. Leak-down will not show valve timing and movement problems, or piston movement related sealing problems. Any test should include both compression and leak-down.

6. Diametral compression test - Wikipedia

   en.wikipedia.org/wiki/Diametral_compression_test

   A diametral compression test involves applying a stress load or force to the point where a material object is split in half (down the diameter of the object). [1] This test indirectly measures the tensile property of a material object, as the molecules of the material are pushed apart in opposite directions, similar to what happens to molecules in a direct tensile strength test.

7. Compression set - Wikipedia

   en.wikipedia.org/wiki/Compression_set

   Compression set B is (like Compression set A) defined as the percentage of specimen deflection after it has been left in normal (uncompressed) conditions for 30 minutes. C B , the compression set B is given by C B = [(t o - t i ) / (t o - t n )] * 100 where t o is the original specimen thickness, t i is the specimen thickness after testing and ...