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자료유형
학술대회자료
저자정보
김경호 (한국원자력연구소) 이민구 (한국원자력연구소) 이창규 (한국원자력연구소) 위명용 (충북대학교) 김흥회 (한국원자력연구소)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2002년도 제1회 재료 및 파괴부문 학술대회 논문집
발행연도
2002.3
수록면
371 - 379 (9page)

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In this research, fretting tests were conducted in air to investigate the wear characteristics of fuel cladding materials with the fretting parameters such as normal load, slip amplitude, frequency and the number of cycles. A high frequency fretting wear tester was designed for this experiment by KAERI. After the experiments, the wear volume and the shape of wear contour were measured by the surface roughness tester. Tribologically transformed structures(TTS) were analysed by means of optical and scanning electron microscopes to identify the main wear mechanisms. The results of this study showed that the wear volume were increased with increasing slip amplitude, and the shape of wear contour was transformed V-type to W-type. Also, it was found that the critical slip amplitude was 168㎛. This phenomena mean that wear mechanism transformed partial slip to gross slip to accelerate wear volume. The wear depth increased with an increase of friction coefficient due to increase of normal load and frequency. The fretting wear mechanisms were believed that, after adhesion and surface plastic deformation occurred by relative sliding motion on the contact between two specimens, TTS creation was induced by surface strain hardening and wear debris were detached from the contact surface which were produced by the micro crack propagation and creation.

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Abstract
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2. 실험방법
3. 실험결과 및 고찰
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UCI(KEPA) : I410-ECN-0101-2010-550-003028104