Sunday, 19 July 2015

Successfully Holding Tensile Specimens Cut From Plastic Pipes

When conducting tensile tests on sections cut from plastic pipes, the resulting test specimen dumbbell shape (dimensions of which are defined by the relevant test standard be it ISO, ATSM, GB, GOST etc) exhibit the curve of the pipe, this means it cannot generally be held for the duration of the tensile test using flat parallel grip faces as the curvature of the specimen prevents a good amount of contact between the specimen and the grip faces.

The solution from Tinius Olsen is a clamp grip with specimen gripping faces profiled in shape to match the curvature of the test specimen;

For more information and insight into the physical testing of plastics to determine strength and performance check out  Click here

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