Paper Title:
Damage Identification of a Mechanical Structure with a Non-Minimum Phase Based on Singular Value Decomposition
  Abstract

This paper presents experimental results of source identification for a non-minimum phase system. Generally, a causal linear system may be described by matrix form. The inverse problem is considered as a matrix inversion. Direct inverse method cannot be applied for a non-minimum phase system, because the system has ill-conditioning. Therefore, in this study the SVD inverse technique is introduced to execute an effective inversion. In a non-minimum phase system, its system matrix may be singular or near-singular and has very small singular values. These very small singular values have information about a phase of the system and ill-conditioning. Using this property we could solve the ill-conditioned problem of the system and then verify it for the practical system (cantilever beam). The experimental results show that the SVD inverse technique works well for a non-minimum phase system. This inverse technique can be applied to the estimation of the magnitude of impact force, which becomes often a cause of damage to a mechanical system.

  Info
Periodical
Key Engineering Materials (Volumes 293-294)
Edited by
W.M. Ostachowicz, J.M. Dulieu-Barton, K.M. Holford, M. Krawczuk and A. Zak
Pages
119-126
DOI
10.4028/www.scientific.net/KEM.293-294.119
Citation
S. K. Lee, K.-R. Rho, J. Gu, "Damage Identification of a Mechanical Structure with a Non-Minimum Phase Based on Singular Value Decomposition ", Key Engineering Materials, Vols. 293-294, pp. 119-126, 2005
Online since
September 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yoshifumi Iwasaki, Yuji Nakasone
Abstract:The present study has investigated plasticity-induced martensitic phase transformation in fatigue of unnotched SUS304 plates. Martensitic...
1152
Authors: Ai Rong Zhang, Xiao Liu
Chapter 4: Reliability and Durability of Structures
Abstract:Due to the dependence of the sample data for a probabilistic reliability model and the fuzzy model, the interval model was used to describe...
1908
Authors: F.C. Cione, J.L. Rossi, A.C. Souza, S. Delijaicov, M.A. Colosio
Chapter 3: Ceramics II
Abstract:Many engineering specifications, manufacturing procedures, inspection and quality control have begun to require that the residual stress of a...
1925
Authors: Xiao Jing Tan, Bin Wu
Chapter 13: Advanced Structural Experimental Techniques and Sensing Techniques
Abstract:Pseudo-dynamic testing using force- mixed control strategy is presented for structures with large stiffness. In this proposed method, the...
1133