Modern extensometry for a data-driven world
By Tinius OlsenAlthough there are several versions of both contact and non-contacting extensometers in material testing, most of which are deemed cost prohibitive, extremely complicated to integrate or that lack the needed repeatability, extensometry has not changed all that much since it’s standardisation in the 1950s.
At its core, an extensometer is a very sophisticated ruler that can measure separation, displacement, or compression of material, measuring down to half of a micron, and is used to measure displacement or strain on the surface of a test piece.
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