Local Damage Detection with the Global Fitting Method Using Operating Deflection Shape Data

Yoon, Moon-Gil; Heider, Dirk; Gillespie, John W.; Ratcliffe, Colin P.; Crane, Roger M.

doi:10.1007/s10921-010-0062-8

Cited by 54 publications

(16 citation statements)

References 13 publications

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“…Mode shapes are the orthogonal modes of the structures; they usually contain local information of structures and hence have been widely used for damage detection [1,[11][12][13][14][15][16][17]. Frequency response function and operating deflection shape containing information of both natural frequencies and mode shapes are also frequently used in local damage detection [18][19][20]. Recently, the influence of auxiliary mass on a structure is studied [21,22].…”

Section: Introductionmentioning

confidence: 99%

Damage detection using frequency shift path

Wang

Lie

Zhang

2016

Mechanical Systems and Signal Processing

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Section: Introductionmentioning

confidence: 99%

Damage detection using frequency shift path

Wang

Lie

Zhang

2016

Mechanical Systems and Signal Processing

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“…In particular, Ratcliffe and Bagaria 5 have proposed an innovative baseline-free approach for detecting structural irregularities, based on a gapped smoothing method (GSM), which has been successfully implemented in practice. 6 More recently, Yoon et al 7,8 have proposed an alternative baseline-free approach based on a global fitting method reminiscent of an approach originally proposed by Stubbs and Kim. 9 While these curvature-based approaches can detect and locate the presence of delamination damage, they do not provide a quantitative characterisation of the damage.…”

Section: Introductionmentioning

confidence: 99%

Inverse methods for quantitative assessment of delamination damage based on vibrational response

Rose

Wang

2015

Structural Health Monitoring

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A novel two-step approach for quantifying laminar damages, such as delaminations in composites, is presented. This new approach first employs the gapped smoothing method to locate the edges of damage from the vibrational curvature data, followed by an inverse method to determine the through-thickness location of delaminations that provide the best match with the local reduction in bending stiffness over the damaged region. Practical aspects of the implementation of this procedure are discussed, and the approach is demonstrated using both simulated and experimental data. The role of sample spacing on the accuracy of damage location is investigated systematically and it is shown that an optimum spacing exists for experimental data containing noise. The inverse method is found to be able to provide detailed information of delaminations when the searching space is limited, and it can also be used to determine the effective flexural stiffness for complex delamination damage.

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“…During the past several decades, a significant amount of research has been conducted in the area of structural damage detection (Doebling, 1998;Pandey, 1991;Sovoz, 2008;Yoon, 2010;Shih, 2009;Rucevskis, 2009;Adewuyi, 2009;Alampalli, 1997;Cruz, 2008).…”

Section: Introductionmentioning

confidence: 99%

Damage Detection at Welded Joint of Two-Dimensional Plane Model

Chung¹,

Eun

Seo³

2011

Architectural research

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Damage detection algorithms based on a one-dimensional beam model can detect damage within a beam span caused by flexure only but cannot detect damage at a joint with prescribed boundary conditions or at the middle part of a beam section where the neutral axis is located. Considering the damage at a welded joint of beam elements in steel structures and modeling the damage with twodimensional plane elements, this study presents a new approach to detecting damage in the depth direction of the joint and beam section. Three damage scenarios at the upper, middle, and lower parts of a welded joint of a rectangular symmetric section are investigated. The damage is detected by evaluating the difference in the receptance magnitude between the undamaged and damaged states. This study also investigates the effect of measurement locations and noise on the capability of the method in detecting damage. The numerical results show the validity of the proposed method in detecting damage at the beam' s welded joint.

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Local Damage Detection with the Global Fitting Method Using Operating Deflection Shape Data

Cited by 54 publications

References 13 publications

Damage detection using frequency shift path

Damage detection using frequency shift path

Inverse methods for quantitative assessment of delamination damage based on vibrational response

Damage Detection at Welded Joint of Two-Dimensional Plane Model

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