Volume 58 Issue 24
Dec 2022
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HU Bin, YAN Liang, ZHANG Yangeng, FAN Mengbao. Research on Magnetic Memory Detection and Compensation Method for Early Damage of Tubular Components[J]. JOURNAL OF MECHANICAL ENGINEERING, 2022, 58(24): 49-57. doi: 10.3901/JME.2022.24.049
Citation: HU Bin, YAN Liang, ZHANG Yangeng, FAN Mengbao. Research on Magnetic Memory Detection and Compensation Method for Early Damage of Tubular Components[J]. JOURNAL OF MECHANICAL ENGINEERING, 2022, 58(24): 49-57. doi: 10.3901/JME.2022.24.049

Research on Magnetic Memory Detection and Compensation Method for Early Damage of Tubular Components

doi: 10.3901/JME.2022.24.049
  • Received Date: 30 Mar 2022
  • Rev Recd Date: 02 Sep 2022
  • Available Online: 07 Mar 2024
  • Issue Publish Date: 20 Dec 2022
  • The tubular member is a commonly used engineering member, which will cause heavy losses in the event of an accident. Stress concentration is an important cause of component failure. Magnetic memory testing method is an effective stress concentration testing method. Circumferential scanning magnetic memory detection is performed on cylindrical components, and changes in the action of the earth's magnetic field affect the detection results, which are likely to cause misjudgment of stress concentration areas. The geomagnetic field distribution model on the outer surface of the ferromagnetic cylindrical member is established, and the effect and compensation method of the geomagnetic field on the outer surface of the cylindrical member are explored. The experimental results show that the normal component and amplitude are about twice the geomagnetic field when the ferromagnetic cylindrical member is scanned circumferentially. The normal component of the magnetic signal minus 2 times the geomagnetic field is used as the magnetic memory detection compensation method for cylindrical components, and the correlation coefficient between the compensation and the linear scan is stable above 0.8, which is better than the traditional reverse compensation method. The proposed compensation method for cylindrical components effectively improves the positioning accuracy of stress concentration areas.

     

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