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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.15 No.2
- 발행연도
- 2015.1
- 수록면
- 489 - 503 (15page)
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초록· 키워드
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Response estimation at unmeasured locations using the limited number of measurements is an attractive topic in the field of structural health monitoring (SHM). Because of increasing complexity and size of civil engineering structures, measuring all structural responses from the entire body is intractable for the SHM purpose; the response estimation can be an effective and practical alternative. This paper investigates a response estimation technique based on the Kalman state estimator to combine multi-sensor data under non-zero mean input excitations. The Kalman state estimator, constructed based on the finite element (FE) model of a structure, can efficiently fuse different types of data of acceleration, strain, and tilt responses, minimizing the intrinsic measurement noise. This study focuses on the effects of (a) FE model error and (b) combinations of multi-sensor data on the estimation accuracy in the case of non-zero mean input excitations. The FE model error is purposefully introduced for more realistic performance evaluation of the response estimation using the Kalman state estimator. In addition, four types of measurement combinations are explored in the response estimation: strain only, acceleration only, acceleration and strain, and acceleration and tilt. The performance of the response estimation approach is verified by numerical and experimental tests on a simply-supported beam, showing that it can successfully estimate strain responses at unmeasured locations with the highest performance in the combination of acceleration and tilt.
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참고문헌 (23)
참고문헌 신청
Bavdekar, V. A. / 2011 / Identification of process and measurement noise covariance for state and parameter estimation using Extended Kalman Filter / J. Process Contr 21(4):585~601
조수진 / 2014 / Extension of indirect displacement estimation method using acceleration and strain to various types of beam structures / Smart Structures and Systems, An International Journal 14(4):699~718
M. Gresil / 2013 / Predictive model of fatigue crack detection in thick bridge steel structures with piezoelectric wafer active sensors / Smart Structures and Systems, An International Journal 12(2):97~119
Fatemi, A / 1998 / Cumulative fatigue damage and life prediction theories : a survey of the state of the art for homogeneous materials / Int. J. Fatigue 20(1):9~34
Hjelm, H. P. / 2005 / Determination of stress histories in structures by natural input modal analysis / Proceedings of the 23rd Conference and Exposition on Structural Dynamics (IMACXXIII), Orlando, Florida, USA
조수진 / 2014 / Extension of indirect displacement estimation method using acceleration and strain to various types of beam structures / Smart Structures and Systems, An International Journal 14(4):699~718
M. Gresil / 2013 / Predictive model of fatigue crack detection in thick bridge steel structures with piezoelectric wafer active sensors / Smart Structures and Systems, An International Journal 12(2):97~119
Fatemi, A / 1998 / Cumulative fatigue damage and life prediction theories : a survey of the state of the art for homogeneous materials / Int. J. Fatigue 20(1):9~34
Hjelm, H. P. / 2005 / Determination of stress histories in structures by natural input modal analysis / Proceedings of the 23rd Conference and Exposition on Structural Dynamics (IMACXXIII), Orlando, Florida, USA
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