Local Damage Detection with the Global Fitting Method Using Mode Shape Data in Notched Beams

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

doi:10.1007/s10921-009-0048-6

Cited by 59 publications

(39 citation statements)

References 15 publications

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“…The high sensitivity of this method was also demonstrated by localizing the damage in a steel beam, equivalent to 0.8% reduction in thickness (Ratcliffe, 2000). The application of hybrid techniques for the extraction of the smoothing curvature field, allowed the sensitivity improvement of this method (Yoon, 2001). The comparison between the experimental mode shapes and corresponded analytical ones, allows the localization of the damage (Yoon, 2001).…”

Section: Methods Based On Modal Curvaturementioning

confidence: 95%

“…The application of hybrid techniques for the extraction of the smoothing curvature field, allowed the sensitivity improvement of this method (Yoon, 2001). The comparison between the experimental mode shapes and corresponded analytical ones, allows the localization of the damage (Yoon, 2001). Later, this method was applied to locate defects or delaminations in laminated composite plates (Yoon, 2005).…”

Section: Methods Based On Modal Curvaturementioning

confidence: 99%

See 1 more Smart Citation

Structural Health Monitoring in Composite Automotive Elements

Lopes¹,

Ribeiro²

2012

New Advances in Vehicular Technology and Automotive Engineering

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Section: Methods Based On Modal Curvaturementioning

confidence: 95%

Section: Methods Based On Modal Curvaturementioning

confidence: 99%

Structural Health Monitoring in Composite Automotive Elements

Lopes¹,

Ribeiro²

2012

New Advances in Vehicular Technology and Automotive Engineering

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“…Substituting Eqs. (13) and (14) into Eq. (9), the mode shapes for the section-j (j ≥ 0) can be written as…”

Section: The Adm For a Cracked Beammentioning

confidence: 99%

“…The GSM and GFM later used the operating deflection shape and its curvature data, and were extended to directly use two-dimensional COS data for damage detections. [12][13][14] Recently, Wang and Qiao 15 proposed an irregularity-based method to detect the cracks in beam structures. In this method, The Gaussian filter and triangular filter are applied on the mode shapes to extract the irregularities from the mode shape of the cracked beam, indicating the damage in the structure.…”

Section: Introductionmentioning

confidence: 99%

Vibration Analysis of Cracked Beams Using Adomian Decomposition Method and Non-Baseline Damage Detection via High-Pass Filters

Mao¹

2016

IJAV

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The Adomian decomposition method (ADM) and high-pass filters are employed in this study to investigate the free vibrations and damage detection of cracked Euler-Bernoulli beams. Based on the ADM and employing some simple mathematical operations, the closed-form series solution of the mode shapes can be determined for beams consisting of an arbitrary number of cracks under general boundary conditions in a recursive way. Then, a highpass filter is used to extract the irregularity profile from the corresponding mode shape. The location and size of the cracks in the beam can be determined by the peak value of the irregularity profile. The numerical results for different locations and depths of cracks on the damaged beam under different boundary conditions are presented. The results show that the proposed method is effective and accurate. The experimental work for aluminium cantilever beams with one and two cracks was performed to verify the proposed method. The successful detection of cracks in the beam demonstrates that the proposed method has great potential in crack detection of beam-type structures, as it is simple and does not require the mode shapes of an uncracked beam as a baseline.

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“…They may also be identified regarding magnitude and phase. Besides, it also covers the data of both natural frequencies and mode shapes [3], [9], [10]. This paper presents a damage detection method using a vibration based damage detection method based on the frequency response function (FRF) data.…”

Section: Introductionmentioning

confidence: 99%

Identification of damage based on frequency response function (FRF) data

et al. 2016

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Abstract. Mechanical joints, particularly fasteners such as bolted joints have a complex non-linear behaviour. The non-linearity might emerge from the material, geometry or by the contacts in the joints. However, damage to a structure can be happened either their connections or the material of components. The effect of damage can change the dynamic properties of the structure such as natural frequencies and mode shapes and structural performance and can cause premature failure to structure. This paper presents a damage detection method using a vibration based damage detection method based on the frequency response function (FRF) data. A combination of numerical model and physical bolted jointed structure of damaged and undamaged structure will be investigated. The validation is employed to detect the presence of damage in the structure based on the frequency response function (FRF) data from the parameter values used in the benchmark model and damaged model. The comparisons of the undamaged and damaged structure of the FRF have revealed the damaged structure was shifted from the undamaged structure. The effect of the FRF between undamaged and damaged structure is clearly affected by the reduction of stiffness for the damaged structure.

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Local Damage Detection with the Global Fitting Method Using Mode Shape Data in Notched Beams

Cited by 59 publications

References 15 publications

Structural Health Monitoring in Composite Automotive Elements

Structural Health Monitoring in Composite Automotive Elements

Vibration Analysis of Cracked Beams Using Adomian Decomposition Method and Non-Baseline Damage Detection via High-Pass Filters

Identification of damage based on frequency response function (FRF) data

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