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Posted By Elayne (Schneebacher) Gordonov

 Nov 13, 2013

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Question From a Customer: How to Report Strain at Break Following ASTM D638

Question: I am following ASTM D638-10, and my 'strain at break' results are nearly half of what other labs are reporting for the same material. What is wrong?

Posted By Elayne (Schneebacher) Gordonov

 Oct 08, 2013

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Poisson's Ratio Testing With A Biaxial Extensometer

Poisson’s Ratio has proven to be a challenging calculation for obtaining both repeatable and accurate results. To improve repeatability, we typically recommend grips that provide consistent clamping pressure, such as pneumatic side acting grips.

Posted By Elayne (Schneebacher) Gordonov

 Jun 07, 2013

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What is Stress Whitening, and How Can it Impact Your Test

Thermoplastic polymers may exhibit a change in color under tension. This phenomenon is known as stress whitening and may occur in both semi-crystalline and amorphous thermoplastics. What is really happening here?