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缺陷管道与无缺陷管道的发射率以及热阻数据并不相同,由此其在测试过程中的表面温度也将不同。通过实施红外无损检测方式,有效克服了传统检测方法依靠检测人员主观经验以及漏检误检可能性大等问题,通过使用傅里叶变换、功率谱分析以及最小二乘法拟合等多种方式结合,有效克服了红外热像检测过程中各种影响区域温度分布数据的数字信号,由此实现了管道缺陷检测的识别以及定位,为类似管道缺陷的检测提供了参考的经验。
The emissivity and thermal resistance data for defective and non-defective tubes are not the same, so their surface temperatures will be different during the test. Through the implementation of the infrared non-destructive testing method, the traditional testing method can effectively overcome the problems that the traditional testing methods depend on the subjective experience of the inspectors and the possibility of missing inspection and misdetection, and the like, and can be combined by various methods such as Fourier transform, power spectrum analysis and least- , Which effectively overcomes the various digital signals affecting the temperature distribution in the infrared thermal image detection process. Thus, the identification and location of the pipeline defect detection are realized, which provides reference for the similar pipeline defect detection.