首页|Magnetic Images and NDT of the Express Train Wheel Using a High Speed Scan-Type Magnetic Camera

Magnetic Images and NDT of the Express Train Wheel Using a High Speed Scan-Type Magnetic Camera

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  • NETL
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Wheels are essential parts of an express train, as they support the train's weight, but because of the limited time available for testing and repair in the maintenance factor}', the 1000 wheels of each high-speed train must be tested within 1 h. Therefore it is essential to develop a new NDT system that is able to (a) detect cracks quickly and (b) provide high crack-detection ability regardless of the state of the materials. In this paper we propose a scan-type magnetic camera to satisfy this need. We use a linearly integrated Hall sensor array (LIHaS) as a magnetic sensor to make high-speed testing possible, and we use a small, yoke-type magnetizer as the magnetic source for the magnetic camera to assure high crack-detection ability. We tested the method by examining the cracks on a sample wheel traveling at 27.5km/h.

NDThigh speedcrackwheeltrainsignal processing

Jiseong Hwang、Jinyi Lee

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Department of Information and Communication Engineering, Graduate School of Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, Republic of Korea

Department of Control, Instrumentation and Robot Engineering, Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, Republic of Korea

2010

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.417/418