Decentralized modal identification of structures using parallel factor decomposition and sparse blind source separation

A Sadhu, B Hazra, S Narasimhan - Mechanical Systems and Signal …, 2013 - Elsevier
In this paper, a novel decentralized modal identification method is proposed utilizing the
concepts of sparse blind source separation (BSS) and parallel factor decomposition. Unlike …

Decentralized modal identification using sparse blind source separation

A Sadhu, B Hazra, S Narasimhan… - Smart Materials and …, 2011 - iopscience.iop.org
Popular ambient vibration-based system identification methods process information
collected from a dense array of sensors centrally to yield the modal properties. In such …

Output-only modal identification with limited sensors using sparse component analysis

Y Yang, S Nagarajaiah - Journal of Sound and Vibration, 2013 - Elsevier
Blind source separation (BSS) based methods have been shown to be efficient and powerful
to perform output-only modal identification. Existing BSS modal identification methods …

Tensor-based approach for underdetermined operational modal identification

W Guan, L Dong, J Zhou, J Yan - Mechanical Systems and Signal …, 2021 - Elsevier
During these years, blind source separation (BSS) techniques have been demonstrated as a
promising tool for operational modal identification of large-scale engineering structures only …

Clustering number determination for sparse component analysis during output-only modal identification

TH Yi, XJ Yao, CX Qu, HN Li - Journal of Engineering Mechanics, 2019 - ascelibrary.org
Output-only modal identification plays an important role in the structural health monitoring of
large-scale structures. In recent years, blind source separation (BSS) has achieved great …

A decentralized blind source separation algorithm for ambient modal identification in the presence of narrowband disturbances

A Sadhu, S Narasimhan - Structural Control and Health …, 2014 - Wiley Online Library
In this paper, a new decentralized identification method based on the principles of blind
source separation (BSS) that can perform modal identification in the presence of …

Enhanced sparse component analysis for operational modal identification of real-life bridge structures

Y Xu, JMW Brownjohn, D Hester - Mechanical Systems and Signal …, 2019 - Elsevier
Blind source separation receives increasing attention as an alternative tool for operational
modal analysis in civil applications. However, the implementations on real-life structures in …

Blind modal identification for decentralized sensor network by modified sparse component analysis in frequency-domain subspace

XJ Yao, TH Yi, SW Zhao - Engineering Structures, 2022 - Elsevier
It is practical to develop a modal identification method using a decentralized sensor network
for field tests. Sparse component analysis (SCA) is a potential method in the framework of …

Underdetermined blind modal identification of structures by earthquake and ambient vibration measurements via sparse component analysis

F Amini, Y Hedayati - Journal of Sound and Vibration, 2016 - Elsevier
Sparse component analysis (SCA) approach was adopted to handle underdetermined blind
modal identification of structures, where the number of sensors is less than the number of …

Hybrid time‐frequency blind source separation towards ambient system identification of structures

B Hazra, A Sadhu, AJ Roffel… - Computer‐Aided Civil …, 2012 - Wiley Online Library
Ambient system identification in noisy environments, in the presence of low‐energy modes
or closely‐spaced modes, is a challenging task. Conventional blind source separation …