Relationship between Morphology and Mechanical Properties of Ultra High Molecular Weight Polyethylene

摘要

This report describes work done during FY 1982 under task 80-01, NBS-FDA/BMD (Bureau of Medical Devices) Interagency agreement. The report covers the third year of a four year project concerned with the study of the morphology and mechanical properties of ultra high molecular weight polyethylene (UHMWPE). During FY 1982, the two principle areas of investigation were (1) the examination by x-ray diffraction of morphological changes occurring in UHMWPE while under strain, and (2) the creep and recovery behavior of UHMWPE at small deformations. A new one dimensional constitutive equation is presented which describes very well the creep and recovery behavior of this material at small deformations.