Application of Pulsed Eddy Current and Ultrasonic Sensors in Paint Film Thickness Measuring

摘要：

Online paint film thickness measuring is important in the production of continuous coating line. A method of film thickness measuring using pulsed eddy current (PEC) and ultrasonic sensors without contacting the film itself is proposed. PEC is a new nondestructive testing (NDT) technique which using a broadband pulse excitation with rich frequency information and has wide application potentials. An ultrasonic sensor and a PEC sensor were placed in adjacent position. Where the ultrasonic sensor measures the distance between the device and the upper surface of the paint film and the PEC sensor measures the distance between the device and the upper surface of the substrate. Compared the two distances the film thickness value was produced. The device is capable of accurately measuring thickness of various paint films, such as flat, glossy and metal-flake containing paint films. The method may be applied to continuous coating line. Laboratory experiments proposed the accurate and efficient.

关键词： Pulsed Eddy Current Ultrasonic Sensors Film Thickness Measuring Nondestructive Test

作者: Dengfeng Chen Qichun Ji Liang Zhao Hongcai Zhang

作者单位: Information and Control Engineering School, Xi’an University of Architecture and Technology, Xi’an, Information and Control Engineering School, Xi’an University of Architecture and Technology, Xi’an, College of Automatic Control, Northwestern Polytechnical University, Xi’an, 710072, China

会议类型: 国际会议

会议名称: 2009年中国控制与决策会议(2009 Chinese Control and Decision Conference)

会议地点: 广西桂林

会议语种:英文

页码: 4461-4464

在线出版日期: 2009-06-17（万方平台首次上网日期，不代表论文的发表时间）