Non‐destructive evaluation techniques

This article is a condensation of the author's work that first appeared in “Dimensions” Nov. 1980, the magazine of the National Bureau of Standards, U.S. Dept. of Commerce. With non‐destructive testing techniques playing an increasing role in corrosion monitoring, it is published here as it is felt that it gives a succinct introduction to NDT which will be useful to those not yet familiar with the technology.