The Materials Analyst

摘要

As has been suggested in the past two articles,the mechanical behavior of plastic materials is influenced by the combined factors of temperature,time,and stress.When evaluating long-term responses such as creep,stress relaxation,and fatigue,it is essential that all three be considered as an organic whole.They cannot be considered in a vacuum and if any one of them changes,the calculations of fitness for use for a given material must be re-evaluated.