Fourth-order Perturbed Eigenvalue Equation for Stepwise Damage Detection of Aeroplane Wing

doi:10.1051/matecconf/20167509010

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	Fourth-order Perturbed Eigenvalue Equation for Stepwise Damage Detection of Aeroplane Wing
	Wong, Chun Nam; Tang, Kongzheng; Jin, Wuyin; Tu, Gaoqiao
	2016
卷号	75
DOI	10.1051/matecconf/20167509010
英文摘要	Perturbed eigenvalue equations up to fourth-order are established to detect structural damage in aeroplane wing. Complete set of perturbation terms including orthogonal and non-orthogonal coefficients are computed using perturbed eigenvalue and orthonormal equations. Then the perturbed eigenparameters are optimized using BFGS approach. Finite element model with small to large stepwise damage is used to represent actual aeroplane wing. In small damaged level, termination number is the same for both approaches, while rms errors and termination d-norms are very close. For medium damaged level, termination number is larger for third-order perturbation with lower d-norm and smaller rms error. In large damaged level, termination number is much larger for third-order perturbation with same d-norm and larger rms error. These trends are more significant as the damaged level increases. As the stepwise damage effect increases with damage level, the increase in stepwise effect leads to the increase in model order. Hence, fourth-order perturbation is more accurate to estimate the model solution.
会议录	2016 INTERNATIONAL CONFERENCE ON MEASUREMENT INSTRUMENTATION AND ELECTRONICS (ICMIE 2016)
会议录出版者	E D P SCIENCES
会议录出版地	17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE
语种	英语
WOS研究方向	Automation & Control Systems ; Computer Science ; Engineering ; Instruments & Instrumentation
WOS记录号	WOS:000387539800059
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/36331]
专题	机电工程学院
通讯作者	Wong, Chun Nam
作者单位	Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wong, Chun Nam,Tang, Kongzheng,Jin, Wuyin,et al. Fourth-order Perturbed Eigenvalue Equation for Stepwise Damage Detection of Aeroplane Wing[C]. 见:.