Capacitive Imaging Technique for the Inspection of Composite Sucker Rod

Kefan Wang; Xiaokang Yin; Chen Li; Wei Li; Guoming Chen

doi:10.1186/s10033-019-0421-z

摘要

Composite sucker rod has been extensively used due to its high strength, light weight and corrosion resistive nature. However, such composite sucker rod is difcult for conventional non-destructive evaluation (NDE) techniques to inspect because of its complex material and/or structure. It is thus useful to embark research on developing novel NDE technique to comply the inspection requirement. This work demonstrates the feasibility of using the capacitive imaging (CI) technique for the inspection of composite sucker rod. Finite element (FE) models were constructed in COMSOL to simulate the detection of defects in the glass-fber layer and on the carbon core surface. An FE Model based inversion method is proposed to obtain the profle of the carbon core. Preliminary CI experimental results are then presented, including the detection of surface wearing defect in the glass-fber layer, and obtaining the profle of the carbon core. A set of accelerated aging experiments were also carried out and the results indicate that the CI technique is potentially useful in evaluating the ageing status of such composite sucker rod. The CI technique described in this work shows great potential to target some challenging tasks faced in the non-destructive evaluation of composite sucker rod, including quality control, defect detection and ageing assessment.

关键词： Non-destructive evaluation; Capacitive imaging; Composite inspection

本文引用格式

Kefan Wang , Xiaokang Yin , Chen Li , Wei Li , Guoming Chen . Capacitive Imaging Technique for the Inspection of Composite Sucker Rod[J]. Chinese Journal of Mechanical Engineering, 2019 , 32(6) : 105 -105 . DOI: 10.1186/s10033-019-0421-z

Abstract

Composite sucker rod has been extensively used due to its high strength, light weight and corrosion resistive nature. However, such composite sucker rod is difcult for conventional non-destructive evaluation (NDE) techniques to inspect because of its complex material and/or structure. It is thus useful to embark research on developing novel NDE technique to comply the inspection requirement. This work demonstrates the feasibility of using the capacitive imaging (CI) technique for the inspection of composite sucker rod. Finite element (FE) models were constructed in COMSOL to simulate the detection of defects in the glass-fber layer and on the carbon core surface. An FE Model based inversion method is proposed to obtain the profle of the carbon core. Preliminary CI experimental results are then presented, including the detection of surface wearing defect in the glass-fber layer, and obtaining the profle of the carbon core. A set of accelerated aging experiments were also carried out and the results indicate that the CI technique is potentially useful in evaluating the ageing status of such composite sucker rod. The CI technique described in this work shows great potential to target some challenging tasks faced in the non-destructive evaluation of composite sucker rod, including quality control, defect detection and ageing assessment.

Key words： Non-destructive evaluation; Capacitive imaging; Composite inspection

参考文献

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