Techno Press
You logged in as Techno Press

Smart Structures and Systems
  Volume 9, Number 1, January 2012 , pages 55-70

Damage detection from the variation of parameter matrices estimated by incomplete FRF data
Salam Rahmatalla, Hee-Chang Eun and Eun-Taik Lee

    It is not easy to experimentally obtain the FRF (Frequency Response Function) matrix corresponding to a full set of DOFs (degrees of freedom) for a dynamic system. Utilizing FRF data measured at specific positions, with DOFs less than that of the system, as constraints to describe a damaged system, this study identifies parameter matrices such as mass, stiffness and damping matrices of the system, and provides a damage identification method from their variations. The proposed parameter identification method is compared to Lee and Kim
Key Words
    frequency response function; dynamic stiffness matrix; receptance; damping matrix; minimization.
Salam Rahmatalla : Faculty of Department of Civil and Environmental Engineering, University of Iowa, Iowa City, USA
Hee-Chang Eun : Faculty of Department of Architectural Engineering, Kangwon National University, Chuncheon, Korea
Eun-Taik Lee : Faculty of Department of Architectural Engineering, Chung-Ang University, Seoul, Korea

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2023 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: