The following references were consulted when creating this example problem:
ASTM International. (2006). ASTM Standard D1043. Standard Test Method for Stiffness Properties of Plastics as a Function of Temperature by Means of a Torsion Test. West Conshohocken.
ASTM International. (2006). ASTM Standard D412. Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers-Tension. West Conshohocken.