Investigating Long Term Stability of Nondestructive Testing Equipment in Thickness Measuring

doi:10.3901/JME.2019.21.161

Abstract

Abstract: Non-destructive Testing (NDT) and Structural Health Monitoring (SHM) are important technologies well used in industrial production for ensuring safety and reducing cost. In the field of SHM, the long-term stability of in situ measuring instrument is particularly important. The application of thickness measurement using electromagnetic and ultrasonic non-destructive testing respectively is introduced, then the challenges existing in maintaining the long term stability of thickness non-destructive testing is analysed. In order to explore the accuracy variation of the instruments in the process of long-term use measurement, data are obtained by using three thickness measuring instruments to detect pre-calibrated samples for a five-year term. The long-term stability of eddy current and ultrasonic thickness gauge is discussed by analysing the annual mean error, relative error and change rate of them. It shows that the electromagnetic thickness measuring instrument has a better long-term stability, the accuracy of ultrasonic thickness measuring instrument changed over time, and the accuracy of floor thickness measuring instrument tends to be unstable, which lays a foundation for the application of electromagnetic non-destructive testing technology in SHM for self-calibration and compensation.

Key words: non-destructive testing, structure health monitoring, ultrasonic thickness measurement, eddy current thickness measurement

CLC Number:

TG156

GONG Rong, LUO Siqi, YE Bo, YU Yating, TIAN Guiyun, Yi Qiuji. Investigating Long Term Stability of Nondestructive Testing Equipment in Thickness Measuring[J]. Journal of Mechanical Engineering, 2019, 55(21): 161-169.

References

[1] BARCELO-ORDINAS J,DOUDOU M,GARCIA-VIDAL J,et al. Self-calibration methods for uncontrolled environments in sensor networks:A reference survey[J]. Ad Hoc Networks,2019,88:142-159.
[2] CAWLEY P,Structural health monitoring:Closing the gap between research and industrial deployment[J]. Structural Health Monitoring,2018,17(5):1225-1244.
[3] 蔡禹舜,朱昊,卿新林. 复合材料冲击损伤检测维护对SHM技术需求分析[J]. 航空制造技术,2018,61(7):78-82. CAI Yushun,ZHU Hao,QING Xinlin. Composite material impact damage detection and maintenance requirement analysis to SHM technology[J]. Aeronautical Manufacturing Technology,2018,61(7):78-82.
[4] MCCANN D,FORDE M. Review of NDT methods in the assessment of concrete and masonry structures[J]. Ndt & E International,2001,34(2):71-84.
[5] 周正干,冯海伟. 超声导波检测技术的研究进展[J]. 无损检测,2006,28(2):57-63. ZHOU Zhenggan,FENG Haiwei. Progress in research of ultrasonic guided wave testing technique[j]. Nondestructive testing,2006,28(2):57-63.
[6] ZHANG Dejun,YU Yating,CHAO Lai,et al. Thickness measurement of multi-layer conductive coatings using multifrequency eddy current techniques[J]. Nondestructive Testing & Evaluation,2016,31:1-18.
[7] 高宽厚,于亚婷,杨姣,等. 双层导电涂层厚度的涡流无损检测方法研究[J]. 机械工程学报,2017,53(14):114-119. GAO Kuanhou,YU Yating,YANG Jiao,et al. Study on eddy-current nondestructive testing method of the double-layers conductive coating thickness[J]. Journal of Mechanical Engineering,2017,53(14):114-119.
[8] LI Zhichao,DIXON S. Experimental studies of the magneto-mechanical memory (MMM) technique using permanently installed magnetic sensor arrays[J]. NDT & E International,2017,92136-148
[9] TIAN Guiyun,ZHAO Zhengxu,BAINES R. The research of inhomogeneity in eddy current sensors[J]. Sensors and Actuators A (Physical),1998,69(2):148-151.
[10] 敬人可,李建增,周海林. 超声无损检测技术的研究进展[J]. 国外电子测量技术,2012,31(7):28-30. JING Renke. LI Jianzeng,ZHOU Hailin. Research progress of ultrasonic NDT technology[J]. Foreign Electronic Measurement Technology,2012,31(7):28-30.
[11] 周正干,肖鹏,刘航航. 航空复合材料先进超声无损检测技术[J]. 航空制造技术,2013,424(4):40-43. ZHOU Zhenggan,XIAO Peng,LIU Hanghang. Advanced ultrasonic testing technology for aviation composites[J]. Aeronautical Manufacturing Technology,2013,424(4):40-43.
[12] SCHNEIDER D,UCKER M. Non-destructive characterization and evaluation of thin films by laser-induced ultrasonic surface waves[J]. Thin Solid Films,1996,290-291:305-311.
[13] LAKESTANI F,COSTE J,DENIS R. Application of ultrasonic Rayleigh waves to thickness measurement of metallic coatings[J]. NDT & E International,1995,28(3):171-178
[14] MORENO E,ACEVEDO P,CASTILLO M. Thickness measurement in composite materials using lamb waves:Viscoelastic effects[J]. 2000,37(8):595-599.
[15] 刘镇清. 橡胶材料超声波无损检测技术的研究[J]. 橡胶工业,1993(8):479-482. LIU Zhenqing. Research on ultrasonic nondestructive testing technology for rubber materials[J]. China Rubber Industry,1993(8):479-482.
[16] 胡志雄. 涂覆型雷达吸波涂层厚度超声测量原理及装置[D]. 大连:大连理工大学,2013. HU Zhixiong. Ultrasonic principle and device for thickness measurement of radar absorbing coating[D]. Dalian:Dalian University of Technology,2013.
[17] RÖPER. F. A high-frequency eddy current method for the thickness measurement of thin metallic foils using ferrite-core transmission systems[J]. NDT&E International,2000,33(3):163-172.
[18] BARBOSA C. An eddy current sensor for conductor inspection on energized power lines[C]//Proceedings of the 2014 3rd International Conference on Applied Robotics for the Power Industry,2014.
[19] SAKRAN F,GOLOSOVSKY M,GOLDBERGER H,et al. High-frequency eddy-current technique for thickness measurement of micron-thick conducting layers[J]. Applied Physics Letters,2001,78(11):1634-1636.
[20] MANDACHE C,LEFEBVRE J. Transient and harmonic eddy currents:Lift-off point of intersection[J]. NDT&E International,2006,39(1):57-60.
[21] QU Zilian,MENG Yonggang,ZHAO Qian. Eddy current measurement of the thickness of top Cu film of the multilayer interconnects in the integrated circuit (IC) manufacturing process[J]. Frontiers of Mechanical Engineering,2015,10(1):1-6.
[22] SAKSA P,SORSA J. System stability and calibrations for hand-held electromagnetic frequency domain instruments[J]. Journal of Applied Geophysics,2017,140:84-92.
[23] DELEFORTRIE S,DESMEDT P,SAEY T,et al. An efficient calibration procedure for correction of drift in EMI survey data[J]. Journal of Applied Geophysics,2014,110:115-125.
[24] 窦锋,崔增红. 超声波斜探头磨损对超声探伤的影响与修复方法[J]. 品牌,2011(5):157. DOU Feng,CUI Zenghong. Effect of wear of ultrasonic oblique probe on ultrasonic flaw detection and repair method[J]. Brand,2011(5):157.
[25] 贾云海,孙晓飞,袁良经. 分析仪器长期稳定性表征方法研究[J]. 冶金分析,2019,39(1):1-7. JIA Yunhai,SUN Xiaofei,YUAN Liangjing. Study on long-term stability characterization of analytical instruments[J]. Metallurgical Analysis,2019,39(1):1-7.