Flexible GMR Sensor Array for Magnetic Flux Leakage Testing of Steel Track Ropes

被引：45
|
作者：
Singh, W. Sharatchandra [1 ]
Rao, B. P. C. [1 ]
Thirunavukkarasu, S. [1 ]
Jayakumar, T. [1 ]
机构：
[1] Indira Gandhi Ctr Atom Res, NDE Div, Kalpakkam 603102, Tamil Nadu, India
来源：
JOURNAL OF SENSORS | 2012年 / 2012卷
关键词：
D O I：
10.1155/2012/129074
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents design and development of a flexible GMR sensor array for nondestructive detection of service-induced defects on the outer surface of 64 mm diameter steel track rope. The number of GMR elements and their locations within saddle-type magnetizing coils are optimized using a three dimensional finite element model. The performance of the sensor array has been evaluated by measuring the axial component of leakage flux from localized flaw (LF) and loss of metallic cross-sectional area (LMA) type defects introduced on the track rope. Studies reveal that the GMR sensor array can reliably detect both LF and LMA type defects in the track rope. The sensor array has a fast detection speed along the length of the track rope and does not require circumferential scanning. It is also possible to image defects using the array sensor for obtaining their spatial information.
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页数：6
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