C. Ravat, M. Woytasik, P. Joubert, Y. Le Bihan, C. Marchand, E. Dufour-Gergam, J. Moulin, E. Martincic
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引用次数: 6
Abstract
In this paper, an experimental study was carried out for the design of microsensor arrays dedicated to eddy current non destructive applications. A 3-microcoil 1-D array sensor was realized thanks to microtechnology. Since each coil can be used as a transmitter or a receiver, five different transmission- reception strategies were considered for the inspection of a nickel based alloy target, featuring several calibrated surface notches. While the most basic strategy did not detect the smallest notch (0.1 x 0.1 x 0.1 mm3), the best strategy detected it with a 20 dB signal to noise ratio. The detection performances were then analyzed versus frequency and versus notch size.
本文对涡流无损应用微传感器阵列的设计进行了实验研究。利用微技术实现了一种3微线圈一维阵列传感器。由于每个线圈可以用作发射器或接收器，因此考虑了五种不同的发射-接收策略来检查镍基合金目标，具有几个校准的表面缺口。虽然最基本的策略没有检测到最小的陷波(0.1 x 0.1 x 0.1 mm3)，但最佳策略以20 dB的信噪比检测到它。然后分析了检测性能随频率和陷波尺寸的变化。
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