scholarly journals State-of-the-art of magnetic memory testing technique

2021 ◽  
Vol 1976 (1) ◽  
pp. 012066
Author(s):  
Shujun Liu ◽  
Qiwei Yong ◽  
Dean He ◽  
Yonggang Zuo ◽  
Zhen Zhang ◽  
...  
2011 ◽  
Vol 148-149 ◽  
pp. 1483-1486
Author(s):  
Wei Min Zhang ◽  
Cheng Feng Chen ◽  
Hao Yan Li ◽  
Shu Xuan Liu

Metal Magnetic Memory (MMM) testing method has its own effective and unique advantages on the research of extension of metal crack. The array magnetic memory testing sensor designed and assembled in accordance with specific conditions, could evidently enhance testing-efficiency, such as for components with complex shape or large surface area, and may simplify the test equipment correspondingly. A kind of array magnetic memory sensor with Hall elements as core components was designed and an experiment on metal magnetic memory testing on extension of metal crack was executed. The experiment results indicate that the magnetic memory testing technique could effectively monitor and qualitatively evaluate the progress of metal crack extension.


2010 ◽  
Vol 21 (5) ◽  
pp. 055703 ◽  
Author(s):  
Ping Wang ◽  
Shougao Zhu ◽  
Gui Yun Tian ◽  
Haitao Wang ◽  
John Wilson ◽  
...  

2020 ◽  
Vol 125 ◽  
pp. 103439 ◽  
Author(s):  
Fumin Gao ◽  
JianChun Fan ◽  
Laibin Zhang ◽  
Jiankang Jiang ◽  
Shoujie He

2010 ◽  
Vol 439-440 ◽  
pp. 1624-1627
Author(s):  
Wen Pei Zheng ◽  
Jian Chun Fan ◽  
Lai Bin Zhang ◽  
Dong Wen

Oil well tubing is used in oil extraction in offshore oil well. Under the force of tubular columns, erosion and pressure of drilling fluids, the oil well tubing usually fails in long-term service, which always leads to accidents and stagnation of production. So it’s especially necessary to detect faults in tubing. Intense-magnetic memory testing equipment for reusable offshore oil well tubing is developed for this consideration. The equipment is composed of feeding machines, baiting machines, transport machines and a detection machine. Measurement and control system decides the running sequence logic of these components and obtains fault signals of tubing. The avoidance of transport machines for oil well tubing coupling makes the transport of tubing stable. The synchronization control of transport and detection of tubing decides the accurate location of faults. The automatic switch of both detection units and measurement of fault signals makes it convenient to detect oil well tubing of multiple sizes.


Metals ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 119 ◽  
Author(s):  
Zhibin Hu ◽  
Jianchun Fan ◽  
Shengnan Wu ◽  
Haoyuan Dai ◽  
Shujie Liu

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