1998
DOI: 10.1177/107754639800400505
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A Multiple-Damage Location Assurance Criterion Based on Natural Frequency Changes

Abstract: A new method for locating multiple damage sites in elastic structures is introduced. It uses only the natural frequencies for diagnosis and obviates the need to have complete experimental mode shapes. Results from three damaged structures are presented. A 2-bar truss illustrates the basis for the method, a 15-bar truss shows its use with symmetrical structures, and a redundant-bar truss is used to compare the new method with that of Pandey and Biswas. Correct predictions of the location and relative amounts of… Show more

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Cited by 36 publications
(18 citation statements)
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“…The required assessment of the structures damage state is obtained by searching for matrix ½dD, which maximizes the MDLAC value (see Eq. (20)) [29].…”
Section: Further Application: Diagnosis Of Damage Statementioning
confidence: 98%
See 2 more Smart Citations
“…The required assessment of the structures damage state is obtained by searching for matrix ½dD, which maximizes the MDLAC value (see Eq. (20)) [29].…”
Section: Further Application: Diagnosis Of Damage Statementioning
confidence: 98%
“…All of these terms can be obtained from a Finite Element Model (FEM). [29]. In theory, the actual frequency changes in a damaged structure could be obtained directly by taking a pseudoinverse solution of the sensitivity matrix.…”
Section: Further Application: Diagnosis Of Damage Statementioning
confidence: 99%
See 1 more Smart Citation
“…In [12], a notch in a steel frame was located by considering natural frequency changes between the healthy and damaged states of the structure. In [13], a multiple damage location assurance criterion, was put forward, also based on natural frequency changes. In [14], the vibration modes were used to identify the crack location and size in a cantilever beam.…”
Section: Introductionmentioning
confidence: 99%
“…Messina et al proposed a similar correlation concept based on the Modal Assurance Criterion (MAC) to develop the Damage Location Assurance Criterion (DLAC) [15][16] [17]. A MAC value measures the extent of linear correlation between an experimental and analytical mode shape and is typically used for validating the fidelity of an analytical model.…”
Section: Correlation-based Damage Localizationmentioning
confidence: 99%