Application of spectral beam finite element with a crack and iterative search technique for damage detection

Krawczuk, Marek

doi:10.1016/s0168-874x(01)00084-1

Cited by 115 publications

(71 citation statements)

References 4 publications

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“…Ruotolo and Surace (1997) propose a solution procedure employing a genetic algorithm and the results of the finite element model for the detection of multiple cracks in beams. Krawczuk (2002) uses the wave propagation approach combined with an iterative searching strategy including two methods for damage detection in beam-like structures. This paper presents simplified methods for determining natural frequency drops due to the multiple cracks in beams and a methodology for identifying location and depth ratio parameters of the cracks.…”

Section: Latin American Journal Of Solids and Structures 12 (2015) 24mentioning

confidence: 99%

A Novel Methodology Using Simplified Approaches for Identification of Cracks in Beams

Mazanoglu

2015

Lat. Am. j. solids struct.

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In this paper, natural frequency based forward and inverse methods are proposed for identifying multiple cracks in beams. Forward methods include simplified definition of the natural frequency drops caused by the cracks. The ratios between natural frequencies obtained from multi-cracked and un-cracked beams are determined by an approach that uses the local flexibility model of cracks. This approach does not consider nonlinear crack effects that can be easily neglected when the number of cracks is not excessive. In addition, an expression, which removes the necessity of repeating natural frequency analyses, is given for identifying the connection between the crack depths and natural frequency drops. These simplified approaches play crucial role in solving inverse problem using constituted crack detection methodology. Solution needs a number of measured modal frequency knowledge two times more than the number of cracks to be detected. Efficiencies of the methods are verified using the natural frequency ratios obtained by the finite element package. The crack detection methodology is also validated using some experimental natural frequency ratios given in current literature. Results show that the locations and depths ratios of cracks are successfully predicted by using the methods presented.

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Section: Latin American Journal Of Solids and Structures 12 (2015) 24mentioning

confidence: 99%

A Novel Methodology Using Simplified Approaches for Identification of Cracks in Beams

Mazanoglu

2015

Lat. Am. j. solids struct.

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“…Optimization approach [29][30][31][32] minimizes the discrepancy between the numerically predicted structural responses and the measured data by altering the damage parameters of a pre-defined model in order to determine the location and severity of the damage in the structure being tested.…”

Section: Damage Identification Using Guided Wavesmentioning

confidence: 99%

“…The spectral amplitude was employed for damage identification [29,30]. The continuous Fourier transform of a guided wave signal ( ) u t is defined as …”

Section: Fourier Transformmentioning

confidence: 99%

On the selection of advanced signal processing techniques for guided wave damage identification using a statistical approach

2014

Engineering Structures

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On the selection of advanced signal processing techniques for guided wave damage identification using a statistical approach, Engineering Structures, 2014; 67:50-60 Elsevier's AAM Policy: Authors retain the right to use the accepted author manuscript for personal use, internal institutional use and for permitted scholarly posting provided that these are not for purposes of commercial use or systematic distribution. Permitted scholarly postingVoluntary posting by an author on open websites operated by the author or the author's institution for scholarly purposes, as determined by the author, or (in connection with preprints) on preprint servers. The results reported in this paper show that a suitable signal processing technique combined with the proposed statistical approach produces more robust identification of damages in a structure.

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“…For beam structures, Jiang et al [10] used the time-of-flight difference between the healthy and damaged condition of a beam to identify the damage location, and then identified the damage severity from a power consumption metric defined in the frequency domain. Krawczuk [11] used a genetic algorithm gradient technique to identify a crack in a beam, in which the crack was modelled as a dimensionless spring. Li et al [12] employed continuous wavelet transform to extract the reflected and transmitted flexural waves from a crack for damage identification, and Liew and Veidt [13] applied wavelet decomposition and artificial neural network based pattern recognition techniques to characterise laminar damage in beam structures.…”

Section: Introductionmentioning

confidence: 99%

Guided wave damage characterisation in beams utilising probabilistic optimisation

Veidt

Lam

2009

Engineering Structures

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Application of spectral beam finite element with a crack and iterative search technique for damage detection

Cited by 115 publications

References 4 publications

A Novel Methodology Using Simplified Approaches for Identification of Cracks in Beams

A Novel Methodology Using Simplified Approaches for Identification of Cracks in Beams

On the selection of advanced signal processing techniques for guided wave damage identification using a statistical approach

Guided wave damage characterisation in beams utilising probabilistic optimisation

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