• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2010.10a
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• pp.89-90
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• 2010

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.04a
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• pp.96-97
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• 2014

• 한국방재학회:학술대회논문집
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• 2009.02b
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• pp.123.1-123.1
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• 2009

• Proceedings of the KSR Conference
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• 2003.10a
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• pp.175-180
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• 2003

In this paper, we is studied for traction performances of KTX. Main transformer of this train are compose of 3 motor blocks. In order to this test is developed measurement system. Using this system, we obtained important result for running speed, acceleration, axle speed, transformer oil temperature.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2012.10a
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• pp.175-176
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• 2012

• Magazine of the Korea Institute for Structural Maintenance and Inspection
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• v.20 no.2
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• pp.46-51
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• 2016

• Magazine of the Korea Institute for Structural Maintenance and Inspection
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• v.17 no.4
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• pp.10-16
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• 2013

• Magazine of the Korea Institute for Structural Maintenance and Inspection
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• v.17 no.4
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• pp.17-21
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• 2013

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.283-285
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• 2012

In this research, we produced a simple momentum measurement system which figures out information for the real-time travel distance with modularizing a momentum measurement system by using the acceleration sensor, MCU and Bluetooth to measure the exact momentum. In the simulation experiments, we compared the reliability and accuracy of the new momentum measurement system with those of existing momentum measurement systems to confirm that the new momentum measurement system shows superior reliability and accuracy. Base on this results, we will produce the enhanced momentum measurement system, compact and possible to shoe-mount, in future.

• Journal of the Korean Society for Railway
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• v.10 no.6
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• pp.806-811
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• 2007

The derailment is defined as phenomena in which the wheels run off the rail due to inordinate lateral force generated when wheel flange contacts with the rail. Derailment coefficient is typical standard assessing running safety and derailment. The traditional method measuring by strain gage adhered to wheels is very complicated and easy to fail. It also requires too much cost and higher measurement technique. Therefore it can hardly ensure safety because we can't confirm at which time we need to identify safety. In this paper, we principally researched the method measuring easily wheel load generated by contacts between wheel flange and the rail, and lateral force. Correlation of vibration and displacement which was related physical amounts of wheel load and lateral force, was investigated and analyzed through analysis, experiment and measurement. And it is presents new measurement method of derailment coefficient which can estimate derailment possibility only by movement of vibration and displacement, by which we understand the rate for acceleration and displacement to contribute wheel load and lateral force and compare actual data of wheel load and lateral force measured from wheel.