Review of corona resistance testing

Growing interest in corona resistance testing has resulted in the increasing use of such tests to screen materials and to obtain design data. The significance and usefulness of various test methods, therefore, warrants a critical survey. This review compares data obtained for various test arrangements and conditions to show how variation of any one of a number of factors can markedly alter the life of a material at a given stress and its relative rank. This information can serve as a guide to intelligent interpretation of test results and to the development of methods which correlate with service.