튜브 프레팅마멸 연구를 위한 접촉부 미끄럼 거동의 실험적 분석

다국어 초록 (Multilingual Abstract)

To study the fretting wear problem of a nuclear fuel, the behaviour of slip displacement at the contact is investigated in this paper. The slip displacement was evaluated from the vibration amplitudes measured during a fretting wear experiment in real time basis. The experiment was conducted in air at room temperature and one span of a fuel assembly was simulated. The contact condition between the grids and rods varied as the normal force of 5 N and gap of 0.2 ㎜. The fuel rod was vibrated with the frequency of 30 ㎐ and the center oscillation of 0.7 ㎜. Simple geometrical equations were used for the axial and transverse slip displacement. The trace of rod movement was investigated, which was affected by the contact condition. The vibration characteristic was not altered during the experiment when a specific contact condition was applied. The severest wear on the rod occurred in the case of axial slip and gap existence. It implies that the mechanism of impact wear should be understood for studying the fuel fretting problem.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 실험
• 3. 실험 결과 및 토의
• 5. 결론
• 후기
• 참고문헌