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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.26 No.6
- 발행연도
- 2020.1
- 수록면
- 735 - 751 (17page)
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초록· 키워드
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Identification of structure parameters is crucial in Structural Health Monitoring (SHM) context for activities such as model validation, damage assessment and signal processing of structure response. In this paper, guided waves generated by piezoelectric transducers are used for in-situ and non-destructive structural parameter estimation based on Bayesian approach. As Bayesian approach needs iterative process, which is computationally expensive, this paper proposes a method in which an analytical model is selected and developed in order to decrease computational time and complexity of modeling. An experimental set-up is implemented to estimate three target elastic and geometrical parameters: Young's modulus, Poisson ratio and thickness of aluminum and steel plates. Experimental and simulated data are combined in a Bayesian framework for parameter identification. A significant accuracy is achieved regarding estimation of target parameters with maximum error of 8, 11 and 17 percent respectively. Moreover, the limitation of analytical model concerning boundary reflections is addressed and managed experimentally. Pulse excitation is selected as it can excite the structure in a wide frequency range contrary to conventional tone burst excitation. The results show that the proposed non-destructive method can be used in service for estimation of material and geometrical properties of structure in industrial applications.
목차
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참고문헌 (87)
참고문헌 신청
Frédéric Ablitzer / 2014 / Identification of stiffness and damping properties of plates by using the local equation of motion / Journal of Sound and Vibration 333(9):2454~2468
Jitendra Kumar Agrahari / 2015 / A refined Lamb wave time-reversal method with enhanced sensitivity for damage detection in isotropic plates / Journal of Intelligent Material Systems and Structures 27(10):1283~1305
Bekir Akgöz / 2017 / Effects of thermal and shear deformation on vibration response of functionally graded thick composite microbeams / Composites Part B: Engineering 129:77~87
Alen Alexanderian / 2013 / On spectral methods for variance based sensitivity analysis / Probability Surveys 10:51~68
L. Ambrozinski / 2015 / Identification of material properties - efficient modelling approach based on guided wave propagation and spatial multiple signal classification / Structural Control and Health Monitoring 22(7):969~983
Jitendra Kumar Agrahari / 2015 / A refined Lamb wave time-reversal method with enhanced sensitivity for damage detection in isotropic plates / Journal of Intelligent Material Systems and Structures 27(10):1283~1305
Bekir Akgöz / 2017 / Effects of thermal and shear deformation on vibration response of functionally graded thick composite microbeams / Composites Part B: Engineering 129:77~87
Alen Alexanderian / 2013 / On spectral methods for variance based sensitivity analysis / Probability Surveys 10:51~68
L. Ambrozinski / 2015 / Identification of material properties - efficient modelling approach based on guided wave propagation and spatial multiple signal classification / Structural Control and Health Monitoring 22(7):969~983
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