- Author
- Bentz, D. P. | Martin, J. W.
- Title
- Using the Computer to Analyze Coating Defects.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Journal
- Journal of Protective Coatings and Linings, Vol. 4, No. 5, 38-45, May 1987
- Keywords
- computers | coatings | degradation | evaluaiton | quantitative analysis | corrosion
- Identifiers
- computer image processing; visual standard evaluation; laboratory sample evaluation; building exterior envelope assessment
- Abstract
- The failure or degradation of a coating system is often characterized by the appearance of defects. These defects may be localized within the coating (e.g., checking and chalking); they may occur at the coating- substrate interface (e.g., interfacial corrosion and blistering); or they can exist from the substrate outward (e.g., cracking and pinpoint rusting). When defects become prominent, the coating system has failed and repainting isnecessary. Thus, according to Munger, "the extent of coating failure is one of the most important items to determine (in deciding) when a coating is to be repaired." Determining the extent of failure is necessary, therefore, for evaluating paint durability and predicting the service life of coating systems.