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hardness testing

noun

Definition

  1. In a hardness test, the material is held between a steel anvil and a pointed indenter. A load is applied to the indenter, and the distance the indenter travels into the material is measured. This measurement provides a hardness value to the material. See Vickers test, Knoop test, Brinell test, and Rockwell test.

External Source

http://en.wikipedia.org/wiki/hardness_testing