Accurate thickness testing via phase-sensitive eddy current

Abstract

Phase-sensitive eddy current technology provides an excellent option to metal finishers for measurement of many application combinations. With phase-sensitive eddy current systems available for about $6,000, the eddy current method provides a relatively inexpensive alternative for accurately determining coating thickness. Eddy current systems are easy to operate with menu-driven, prompting software, so even non-technical operators can make instantaneous, accurate and repeatable thickness measurements directly on the process line for improved through-put, quality control and fewer rejections. Many of the largest volume platers use eddy current systems at the end of the plating line for direct process control and incorporate X-Ray in the quality lab for final inspection. Using this combination of technologies ensures the most efficient method to achieve conformance to thickness specifications