For a number of years, we have been using the brittle lacquer technique and the resistance-type gages in studying stresses in gray-iron castings. The brittle lacquers are used to locate areas of high stress concentration and the direction of the stresses. Then, the wire gages are used to determine the amount of stress. Several examples may be of interest.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.