PTFE
specimens have been tested in compression and tension at
differing strain rates and temperatures [1,2]. Experimental
tests of relaxation in tension of PTFE were developed and the
results compared with the prediction of Maxwell’s model [3].
Ratcheting behavior of PTFE has been investigated at room
and elevated temperatures [4,5]. A single specimen normalization
technique was employed to evaluate the J-integral
fracture toughness of PTFE for a range of temperatures and
loading rates [6]. Several constitutive models have been
proposed to predict the complex mechanical behavior of
thermoplastic and thermoset materials. Strain rate and