Department of Signal Theory, Communications and Telematic Engineering, University of Valladolid (UVA), 47011 Valladolid, Spain.
Sensors (Basel). 2011;11(3):2525-65. doi: 10.3390/s110302525. Epub 2011 Feb 28.
Non-destructive techniques are used widely in the metal industry in order to control the quality of materials. Eddy current testing is one of the most extensively used non-destructive techniques for inspecting electrically conductive materials at very high speeds that does not require any contact between the test piece and the sensor. This paper includes an overview of the fundamentals and main variables of eddy current testing. It also describes the state-of-the-art sensors and modern techniques such as multi-frequency and pulsed systems. Recent advances in complex models towards solving crack-sensor interaction, developments in instrumentation due to advances in electronic devices, and the evolution of data processing suggest that eddy current testing systems will be increasingly used in the future.
非破坏性技术在金属工业中被广泛应用，以控制材料的质量。涡流检测是最广泛应用的非破坏性技术之一，用于以非常高的速度检查导电材料，而不需要测试件和传感器之间的任何接触。本文概述了涡流检测的基本原理和主要变量。它还描述了现代技术，如多频和脉冲系统的最新传感器。复杂模型在解决裂纹-传感器相互作用方面的最新进展、电子设备进步带来的仪器仪表的发展，以及数据处理的演变表明，涡流检测系统将在未来得到越来越多的应用。
