基于机电阻抗技术的不锈钢板均匀腐蚀监测方法研究

刘洋1,冯新1,2,3

振动与冲击 ›› 2020, Vol. 39 ›› Issue (12) : 9-16.

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (12) : 9-16.
论文

基于机电阻抗技术的不锈钢板均匀腐蚀监测方法研究

  • 刘洋1,冯新1,2,3
作者信息 +

A study on the monitoring method of uniform corrosion of a stainless steel plate based on electromechanical impedance technique

  • LIU Yang1,FENG Xin1,2,3
Author information +
文章历史 +

摘要

不锈钢板厚度减薄是造成不锈钢板完整性和适用性退化的主要原因之一。不锈钢板的均匀腐蚀会导致不锈钢板厚度均匀减薄,质量减小。因此,对不锈钢板均匀腐蚀进行有效监测具有十分重要的意义。然而,目前对不锈钢板均匀腐蚀的有效监测充满困难和挑战。提出了一种基于机电阻抗技术的不锈钢板均匀腐蚀监测方法。通过推导在单个表面粘贴的压电传感器激励下的简支薄不锈钢板的等效机械导纳,提出了将导纳曲线中弯曲振动模态的共振频率的变化 作为评价不锈钢板均匀腐蚀损伤的敏感指标,使用 与真实腐蚀程度之间的定量关系量化和预测不锈钢板的均匀腐蚀程度。通过实验证明了所提方法的有效性和可靠性。

Abstract

The thinning of the thickness of stainless steel plate is one of the main reasons for the degradation of the integrity and applicability of stainless steel plate.The uniform corrosion of stainless steel plate can result in uniform thickness reduction and mass loss of stainless steel plate.Therefore,it is of great significance to effectively monitor the uniform corrosion of stainless steel plate.However, the effective monitoring of uniform corrosion of stainless steel plate is full of difficulties and challenges.A monitoring method for uniform corrosion of stainless steel plate based on electromechanical impedance technique was presented.Through deducing the effective mechanical admittance of the simply supported thin stainless steel plate under the excitation of a single surface-bonded piezoelectric transducer,the resonance frequency shift of the bending vibration mode in the admittance curve was proposed as a sensitive index for evaluating the uniform corrosion damage of stainless steel plate,the quantitative relationship between and the actual corrosion degree was used to quantify and predict the uniform corrosion degree of stainless steel plate.The effectiveness and reliability of the proposed method were proved by experiment.

关键词

机电阻抗技术 / 不锈钢板 / 均匀腐蚀 / 共振频率变化

Key words

electromechanical impedance technique / stainless steel plate / uniform corrosion / resonance frequency shift

引用本文

导出引用
刘洋1,冯新1,2,3. 基于机电阻抗技术的不锈钢板均匀腐蚀监测方法研究[J]. 振动与冲击, 2020, 39(12): 9-16
LIU Yang1,FENG Xin1,2,3. A study on the monitoring method of uniform corrosion of a stainless steel plate based on electromechanical impedance technique[J]. Journal of Vibration and Shock, 2020, 39(12): 9-16

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