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RISS 인기검색어
- 검색키워드
- 저자 : Hornarbakhsh, Amin (검색결과 2 건)
- 무료
- 기관 내 무료
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Hornarbakhsh, Amin,Nagayama, Tomonori,Rana, Shohel,Tominaga, Tomonori,Hisazumi, Kazumasa,Kanno, Ryoichi Techno-Press 2015 Smart Structures and Systems, An International Jou Vol.15 No.3
Due to corrosion, a large number of belt conveyors support structure in industrial plants have deteriorated. Severe corrosion may result in collapse of the structures. Therefore, practical and effective structural assessment techniques are needed. In this paper, damage identification methods based on two specific local vibration modes, named periodic and isolated local vibration modes, are proposed. The identification methods utilize the facts that support structures have many identical members repeated along the belt conveyor and there exist some local modes within a small frequency range where vibrations of these identical members are much larger than those of the other members. When one of these identical members is damaged, this member no longer vibrates in those modes. Instead, the member vibrates alone in an isolated mode with a lower frequency. A damage identification method based on frequencies comparison of these vibration modes and another method based on amplitude comparison of the periodic local vibration mode are explained. These methods do not require the baseline measurement records of undamaged structure. The methods is capable of detecting multiple damages simultaneously. The applicability of the methods is experimentally validated with a laboratory model and a real belt-conveyor support structure.
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Amin Hornarbakhsh,Tomonori Nagayama,Shohel Rana,Tomonori Tominaga,Kazumasa Hisazumi,Ryoichi Kanno 국제구조공학회 2015 Smart Structures and Systems, An International Jou Vol.15 No.3
Due to corrosion, a large number of belt conveyors support structure in industrial plants havedeteriorated. Severe corrosion may result in collapse of the structures. Therefore, practical and effectivestructural assessment techniques are needed. In this paper, damage identification methods based on twospecific local vibration modes, named periodic and isolated local vibration modes, are proposed. Theidentification methods utilize the facts that support structures have many identical members repeated alongthe belt conveyor and there exist some local modes within a small frequency range where vibrations of theseidentical members are much larger than those of the other members. When one of these identical members isdamaged, this member no longer vibrates in those modes. Instead, the member vibrates alone in an isolatedmode with a lower frequency. A damage identification method based on frequencies comparison of thesevibration modes and another method based on amplitude comparison of the periodic local vibration modeare explained. These methods do not require the baseline measurement records of undamaged structure. Themethods is capable of detecting multiple damages simultaneously. The applicability of the methods isexperimentally validated with a laboratory model and a real belt-conveyor support structure.
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