인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Neutron noise analysis is widely used to monitor the structural integrity of nuclear reactor internals by leveraging the neutron attenuation effects associated with the cantilever bending motion of the core support barrel. Spectral analysis of ex-core neutron detector signals indicates that a decrease in axial preload is typically reflected as a shift in resonance frequency within the cantilever bending mode. Monitoring both the resonance frequency and amplitude is thus essential for effective surveillance and diagnostic procedures. In practice, however, clearly identifying the resonance frequency can be challenging, as the normalized root-mean-square value within the low-frequency band gradually increases with operational time. Consequently, understanding the dynamic behavior of reactor internals as operational time progresses is critical to ensuring accurate surveillance and diagnosis under current operational conditions. In this study, an experimental investigation was conducted to examine the changes in vibration characteristics induced by a reduction in axial preload in the core support barrel, with the aim of identifying trends in resonance frequency variation.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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UCI(KEPA) : I410-151-25-02-091245223