Ball Rebound Test
n A method for measuring the resilience of polymeric materials by dropping a steel ball on a specimen from a fixed height and observing the height of rebound. The difference between the two heights is proportional to the energy absorbed. By conducting tests over a range of temperature, results can indicate temperature of first- and second-order transitions, and effects of additives and plasticizers. (Shah V (1998) Handbook of plastics testing technology. Wiley, New York; Pittance JC (ed) (1990) Engineering plastics and composites. SAM International, Materials Park; Harper CA (ed) (2002) Handbook of plastics, elastomers and composites, 4th edn. McGraw-Hill, New York; see relevant test methods from American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, 19428–2959, www.astm.org).