Method and rating system for evaluation of thermal protection.

Abstract

Thermal protection rating systems for fabrics, based on pain and blister effects in human skin, are considered in terms of: (1) precise evaluations applicable to any known temperature-time pattern, and (2) simple laboratory procedures to provide a universally useful standard rating system. The first system which is more comprehensive is difficult and requires computer operations routinely; the second, described in detail, offers a rating system which is simple, directly related to pain and blister parameters, and may be understood by the uninitiated as well as those knowledgeable in the field.