SATRA publishes new test method

The SATRA TM465:2025 – ‘Rebound resilience test’ method is now available. This fundamental and interesting property of rubbery polymers was featured in the January 2025 issue of SATRA Bulletin and in a supporting webinar the same month. The tangible resilience or ‘bounciness’ of rubber has a direct link to the amount of friction available with other surfaces, especially in wet conditions.

As mentioned in the webinar, SATRA has now completed and published a test method detailing a measurement technique for this property. This SATRA evaluation utilises a pendulum method of the Schob type, in conjunction with a rubber test plate of 12.5 mm thickness. It is suited to rubbers in the hardness range of 30 to 85 IRHD and, when used with the SATRA STD 645 digital resilience tester, provides a digital percentage value of the rebound height of the striker.

Different polymer types can have significantly varying inherent and characteristic resilience, which is further altered to some extent by composition. Lower rebound resilience tends to favour higher wet friction. A knowledge of rebound resilience alongside hardness can enhance your understanding of friction results in slip resistance tests of shoe soles.

Publishing Data

This article was originally published on page 2 of the October 2025 issue of SATRA Bulletin.

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