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Planar Tension (PT) Testing

A planar tension test appears similar to a uniaxial tension test; however, the specimen is designed such that the gauge width is much larger than the gauge height or specimen thickness. The significance of this specimen design is that the large aspect ratio constrains the specimen and prevents “thinning” in the width direction, resulting in a plane strain state of stress.

Planar tension tests are a simple and reliable method to observe a material’s response to shear loading, which is very important when characterizing hyperelastic materials. The graph below provides an example of the difference in response of a silicone rubber to planar tension versus uniaxial tension.

 

Comparison of stress-strain data from Uniaxial Tension and Planar Tension tests on silicone rubber


Veryst offers the following planar tension tests:

 



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