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首页> 外文期刊>NDT & E international >Pipeline corrosion assessment using piezo-sensors in reusable non-bonded configuration
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Pipeline corrosion assessment using piezo-sensors in reusable non-bonded configuration

机译：使用可重复使用的非粘结配置中的压电传感器进行管道腐蚀评估

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摘要

In this paper, a piezoelectric sensor is used in its non-bonded configuration for non-destructive evaluation of a pipeline segment subjected to progressive corrosion damage. A new non-bonded sensor configuration, specially adapted for small diameter pipelines, known as modified non-bonded sensor (MNS), is proposed and evaluated. The new sensor configuration is evaluated for sensitivity in monitoring corrosion induced damage in pipeline segments in controlled laboratory setup through accelerated corrosion tests. The conventional surface-bonded piezo-sensor (SBPS) configuration is used as standard for comparison. Signature analysis using different methods is carried out in the study. Using the principles of the electro-mechanical impedance (EMI) technique, equivalent stiffness, damping and mass parameters are computed from the admittance signatures of both the configurations (MNS & SBPS) and compared. Experimental results show that piezo based a non-dimensional mass parameter from the MNS measurements are very effective in damage detection and quantification. The results are correlated with actual mass loss measurements and consequent corrosion rates are calibrated. The results clearly make case for practical usage of MNS configuration in corrosion detection and health monitoring of pipeline systems. The new MNS configuration proves to be a successful alternative to the conventional bonded piezo configuration.
机译：在本文中，压电传感器以其非粘结配置用于对遭受逐步腐蚀破坏的管道段进行无损评估。提出并评估了一种特别适用于小直径管道的新型无粘结传感器配置，即改进的无粘结传感器（MNS）。对新的传感器配置进行了评估，以通过加速腐蚀测试在受控的实验室设置中监测管道段中腐蚀引起的损坏的敏感性。常规的表面键合压电传感器（SBPS）配置用作比较标准。在研究中使用不同的方法进行签名分析。使用机电阻抗（EMI）技术的原理，可以根据两种配置（MNS和SBPS）的导纳签名计算等效刚度，阻尼和质量参数，并进行比较。实验结果表明，基于MNS测量的基于压电的无量纲质量参数在损伤检测和量化中非常有效。结果与实际的质量损失测量值相关，并因此校准了腐蚀速率。结果显然为在管道系统的腐蚀检测和健康监测中实际使用MNS配置提供了依据。事实证明，新的MNS配置是传统键合压电配置的成功替代方案。

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