The RSA III (Dynamical Mechanical Analyzer or DMA) tests the dynamic mechanical properties of solid materials by using a servo drive linear motor to mechanically impose an oscillatory deformation, or strain, upon the material being tested. The material is coupled between the motor and a transducer, which measures the resultant force generated by material deformation. Strain amplitude and test frequency are set by the operator, and the actual sample deformation is determined by the measured actuator and transducer displacement. Test methods: strain-controlled dynamic test, strain-controlled transient test.