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The Preliminary Study of Acoustic Vibration Flaw Detection for Porcelain Post Insulator

Author: ShiYuQin
Tutor: ZhangZhongYuan
School: North China Electric Power University (Hebei)
Course: High Voltage and Insulation Technology
Keywords: Ceramic post insulators Vibration Sonic flaw detection
CLC: TM216
Type: Master's thesis
Year: 2009
Downloads: 117
Quote: 1
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Abstract


Ceramic post insulators are important parts of the substation operation , wires and insulation plays a supporting role in [1] . Since the insulator is sintered at high temperature into electric porcelain products are easily formed in the production process recipe incorrectly, the process flow in the raw material mixed uneven internal defects caused by the decrease in toughness of ceramic pieces . Withstand the mechanical load in the running for a long time , as well as conditions such as high winds , rain and snow , so that the additional stress increases , potentially damaging , if there is a slight defect insulators . At present , domestic and foreign large and are based on ultrasonic testing , ultrasonic formation can not be separated from the ultrasonic flaw detector and probe ultrasonic detection device cost is relatively high vibrating sonic flaw detection relative to the ultrasonic flaw detection , low cost and simple . In this paper, the use of vibrating sonic testing of new ideas, the vibration of sound waves generated by simple percussion by analyzing the acoustic wave equation using the finite element software ANSYS modeling , simulation intact porcelain insulators and porcelain insulators containing cracks the calculated results show the feasibility of vibrating sonic flaw detection .

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CLC: > Industrial Technology > Electrotechnical > Electrical materials > Insulating materials,dielectric,and its products > Insulator and casing
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