ABSTRACT
The common factor to the subjects considered in this chapter is that they are all concerned with evaluating the resistance of materials to exposure to some environmental agent other than temperature (and air). Durability involves many factors: mechanical, thermal, and electrical stresses including creep, fatigue, and abrasion. These can be difficult enough to measure and are greatly complicated by the effects of nonambient temperatures, but when the effects of environments are superimposed, the problems can increase in a quantum leap.
