ORCID Profile
0000-0002-9220-1197
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: SAGE Publications
Date: 13-03-2009
Abstract: Structural health monitoring has been a research interest for its great potential for life safety and economic benefits for decades. Structural vibration impedance by way of piezoceramic patch excitation and sensoring offers a local damage detection technique and has caused a wide research interest. The commonly used damage index in this method is the rate of change of the real part of the measured electromechanical impedance. This paper studied several damage indices constructed by the real and imaginary parts or magnitude and phase. It theoretically deducted and concluded that the damage index in terms of changes in real part is in fact not a properly defined index and is physically obscure on the other hand, indices in terms of the change in magnitude and phase were shown to be physically clear and properly defined. It further verified that a new damage index in terms of the whole complex-valued impedance turned out to be the elegant combination of the magnitude and phase damage indices in the form of their Euclidean norm. Experimental result further demonstrated that the damage index in terms of real part was largely influenced by the phase, whereas the whole complex impedance offered an optimized and robust damage metric.
Publisher: Elsevier BV
Date: 10-2010
Publisher: IEEE
Date: 2005
Publisher: Elsevier BV
Date: 10-2016
Publisher: Elsevier BV
Date: 11-2005
Publisher: Elsevier BV
Date: 07-2008
Location: China
Location: China
No related grants have been discovered for xianhua liu.