• Proceedings of the KSEEG Conference
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• 2007.04a
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• pp.670-670
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• 2007

• Proceedings of the Korean Nuclear Society Conference
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• 2001.10a
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• pp.240-240
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• 2001

• Proceedings of the Korean Nuclear Society Conference
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• 2002.05a
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• pp.328-328
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• 2002

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2002.04b
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• pp.64-64
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• 2002

• Proceedings of the Korean Nuclear Society Conference
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• 1998.10a
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• pp.263-263
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• 1998

• Journal of the Korean Society for Railway
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• v.11 no.2
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• pp.176-181
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• 2008

This paper presents results from experimental analysis of a friction-driven wheel responsible for generating wheel squeal noise. Squeal noise generating mechanism has been examined under the laboratory condition by the model rig on a small scale. Creep characteristics and squeal noise were observed by changing the possible variables, such as relative velocities and friction coefficients in time- and frequency-domain.

• Journal of Welding and Joining
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• v.11 no.4
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• pp.103-111
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• 1993

Recently, several high-tensile steels(e.g. 80kg and above, $2^{1/4}Cr$-1Mo)having good quality to high temperature and pressure-resistance are widely used to construct petroleum-plant and pressure vessel of heat or nuclear-power plant. However, in the steels, reheating crack at grain boundaries of the heat affected zone(HAZ) occures during post welding heat treatment(PWHT)to remove welding residual stress. In order to study theoretically the characteristics of reheating crack created by PWHT, the computer program of three-dimensional thermal-elasto-plasto-creep analysis based on finite element method are developed, and then the mechanical behavior(history of creep strain accumulation and stress relaxation, etc)of welded join in thick plate during PWTH is clarified by the numerical results.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.11a
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• pp.61-64
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• 2006

This paper presents experimental analysis of a friction-driven wheel responsible for generating wheel squeal. Squeal noise generating mechanism has been examined under the laboratory condition by the model rig. Creep characteristics and squeal noise were observed by varying relative velocity of the wheel with respect to the rail and friction coefficient. Computational radiating noise analysis was also performed based on the modal analysis and noise transfer function measurement of the object wheel.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.05a
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• pp.479-482
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• 2007

This paper presents experimental analysis of a friction-driven wheel responsible for generating wheel squeal. Creep and squeal noise generating mechanism are influenced by friction conditions of attack angle, loading force, driving velocity and surface roughness. Squeal noise phenomena has been examined under the laboratory condition by the model rig. Creep characteristics and squeal noise were observed by varying relative velocity of the wheel with respect to the rail and friction coefficient.

• Journal of Yeungnam Medical Science
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• v.4 no.1
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• pp.139-143
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• 1987

The clinical picture and CSF findings in cryptococcus meningitis may be identical with those of tuberculous meningitis. The differential diagnosis can be made by finding the budding yeast organism in the counting chamber or in stained smear, the detection of cryptococcal antigen in CSF by the latex agglutination test, and by culture of the fungus on Sabouraud agar. We experienced a case of cryptococcal meningitis in the 48 years old woman, which was confirmed by Indian ink preparation and culture.