Detection of contiguous and distributed damage through contours of equal frequency change

Autor:	K. Sathishkumar, N. Gopalakrishnan, S. G. N. Murthy, N. Lakshmanan, B.K. Raghuprasad
Rok vydání:	2010
Předmět:	Engineering Acoustics and Ultrasonics business.industry Mechanical Engineering Process (computing) Structural engineering Condensed Matter Physics Reinforced concrete Civil Engineering Flexural strength Mechanics of Materials Girder business Pile Axial symmetry Beam (structure)
Zdroj:	Journal of Sound and Vibration. 329:1310-1331
ISSN:	0022-460X
DOI:	10.1016/j.jsv.2009.11.006
Popis:	The paper presents the results of a computational modeling for damage identification process for an axial rod representing an end-bearing pile foundation with known damage and a simply supported beam representing a bridge girder. The paper proposes a methodology for damage identification from measured natural frequencies of a contiguously damaged reinforced concrete axial rod and beam, idealized with distributed damage model. Identification of damage is from Equal_Eigen_value_change (Iso_Eigen_value_Change) contours, plotted between pairs of different frequencies. The performance of the method is checked for a wide variation of damage positions and extents. An experiment conducted on a free-free axially loaded reinforced concrete member and a flexural beam is shown as examples to prove the pros and cons of this method. (C) 2009 Elsevier Ltd. All rights reserved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9ef551926eb3689683f9e4e2aa20018 https://doi.org/10.1016/j.jsv.2009.11.006 Zobrazit plný text záznamu Full Text from ScienceDirect