Resilience Ball-Rebound Test

This test, also known as the ball rebound test, is very useful in evaluating the resilience of foams. The test consists of dropping a steel ball onto a foam specimen and noting the height of rebound. The apparatus, as shown in Figure 14-9, consists... 

This property of rebound resilience is very rarely specified, but it is a useful, fast, simple test that can be carried out quantitatively to assign the foam type to conventional or high-resilicncc types. The test is described in ASTM D. 574 95, Test H and consists of dropping a 16 mm diameter steel ball of weight 16.3 g onto the specimen, which preferably is in the form of the end product, or onto the foam at a minimum thickness of 50 mm. Plied-up samples are permitted without the use of cement. 

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