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首页> 外文期刊>Review of Scientific Instruments >Development of eddy current testing system for inspection of combustion chambers of liquid rocket engines
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Development of eddy current testing system for inspection of combustion chambers of liquid rocket engines

机译：开发用于液体火箭发动机燃烧室的涡流检测系统

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An eddy current testing (ECT) system using a high sensitive anisotropic magnetoresistive (AMR) sensor was developed. In this system, a 20 turn circular coil with a diameter of 3 mm was used to produce the excitation field. A high sensitivity AMR sensor was used to measure the magnetic field produced by the induced eddy currents. A specimen made of copper alloy was prepared to simulate the combustion chamber of liquid rocket. Scanning was realized by rotating the chamber with a motor. To reduce the influence of liftoff variance during scanning, a dual frequency excitation method was used. The experimental results proved that ECT system with an AMR sensor could be used to check liquid rocket combustion chamber.
机译：开发了使用高灵敏度各向异性磁阻（AMR）传感器的涡流测试（ECT）系统。在该系统中，使用直径为3 mm的20匝圆形线圈来产生激励场。高灵敏度的AMR传感器用于测量感应涡流产生的磁场。准备了一个由铜合金制成的样本来模拟液体火箭的燃烧室。通过用马达旋转腔室来实现扫描。为了减少扫描过程中提离方差的影响，使用了双频激励方法。实验结果证明，带有AMR传感器的ECT系统可用于检查液体火箭燃烧室。

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