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
1.Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China;
2.State Key Laboratory of Coastal and Offshore Engineering, Dalian 116024, China;
3.Key Laboratory of Disaster Prevention and Mitigation Liaoning Province, Dalian 116024, China
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．
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. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(12): 9-16.
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