An inexpensive vertical-displacement indentation tester

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Abstract
A displacement transducer is used to follow the vertical movements of an indenter tip, which is forced into the material specimen under a selected dead weight load. Measurement of indentation depth under load and vertical recovery following load removal allows both plastic and elastic characteristics of the material to be evaluated. The equipment gives consistent results, is readily portable, and is eminently suited to the testing of relatively soft materials such as compacted powders, plastics and foodstuffs.

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