Crack identification using wavelets on experimental static deflection profiles

Rucka, Magdalena; Wilde, Krzysztof

doi:10.1016/j.engstruct.2005.07.009

Cited by 112 publications

(76 citation statements)

References 15 publications

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“…A new tool for signal analysis -wavelet multiresolution time-scale method was recently implemented in NDT for concrete structures assessment [26][27][28]. It presents the next logic step in frequency analysis of signals -a STFT method of flexible size windows.…”

Section: Wavelet Approachmentioning

confidence: 99%

On the evaluation of interface quality in concrete repair system by means of impact-echo signal analysis

Garbacz

Piotrowski

Courard

et al. 2017

Construction and Building Materials

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h i g h l i g h t sConcrete substrate roughness and microcracking influence stress wave propagation. No relation between bond strength and amplitudes of frequency peaks in IE spectrum. Proposed FE model is useful for simulation of stress wave propagation in repair systems with different interface quality. Bond strength estimation with IE needs advanced signal analysis e.g. wavelet analysis. a r t i c l e i n f o b s t r a c tAccording to Concrete Repair Manual as well as ACI 562-16 and European EN 1504-10 standards, a bond strength as a measure of adhesion is one the main feature of repair system necessary to be assessed. The most common laboratory and engineering method for bond strength evaluation is pull-off test. This is however a semi-destructive method that needs a repair in a place of measurement. Recently, the great interest in nondestructive techniques (NDT) development is noted. Impact-echo (IE) is considered as one of the most promising methods for this purpose.In this paper, the study on the usability the IE test based on frequency spectrum analysis for bond strength evaluation is analyzed. Both Finite Element Method (FEM) simulation and experimental tests were performed in order to obtain potential relations between IE frequency spectrum and parameters characterizing concrete substrate quality that may affect the final bond strength and the real value of pull-off bond strength measured on samples as well. It was concluded that the IE method can be a useful tool for interface quality and bond strength evaluations in concrete repair system. However, more complex signal analysis, e.g. wavelet analysis, should be considered in the future.

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Section: Wavelet Approachmentioning

confidence: 99%

On the evaluation of interface quality in concrete repair system by means of impact-echo signal analysis

Garbacz

Piotrowski

Courard

et al. 2017

Construction and Building Materials

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“…The study of the most appropriate technique for finding cracks in beams based on Wavelets signal processing was presented by Rucka and Wilde (Rucka, 2006). The proposed technique allows the position identification of the damage without the previous knowledge of the structure behavior or the use of mathematical models.…”

Section: Methods Based On Wavelets Transformmentioning

confidence: 99%

“…Several damages with different degrees of severity were investigated based on the optical measurement of the beams bending profile. The damage is located by identifying the local maxima of the signal components for each profile (Rucka, 2006). The Gaussian and Coifet Wavelet functions show to be the most effective in localizing the slot, up to 27% section reduction of the beam thickness.…”

Section: Methods Based On Wavelets Transformmentioning

confidence: 99%

Structural Health Monitoring in Composite Automotive Elements

Lopes¹,

Ribeiro²

2012

New Advances in Vehicular Technology and Automotive Engineering

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“…Interpolation [24] and padding [25] methods are two types of manipulation to deal with this boundary effect. For simplicity in practice, another simple type of manipulation of vanishing abnormal wavelet coefficients [16,26] is employed in this study.…”

Section: Dmentioning

confidence: 99%

Wavelet 2D Modal Curvature for Identifying Non-Uniform Cracks in Plates under Noisy Conditions

Xu¹,

Cao²,

Zhang³

et al. 2017

Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)

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Abstract. Identifying non-uniform cracks in plates is a challenging problem worthy of exploration. 2D modal curvature is often utilized to detect damage in plates, but its capability to precisely identify non-uniform cracks has not been resolved well, largely due to two noticeable deficiencies, lack of sensitivity to damage and susceptibility to noise interference. With this concern, this study ameliorates the 2D modal curvature using the wavelet transform, whereby the wavelet 2D modal curvature is constructed. Damage features extracted from the wavelet 2D modal curvature can be employed to identify non-uniform cracks in plates. This wavelet 2D modal curvature enjoys the multiscale analysis characteristics introduced by the wavelet transform, leading to synchronous extraction of damage features and elimination of noise interference. These features endow the wavelet 2D modal curvature with the capability to identify non-uniform cracks under noisy conditions. The performance of the wavelet 2D modal curvature is verified by damage detection in a plate with a non-uniform crack. The results show the wavelet 2D modal curvature can effectively identify non-uniform cracks in plates under noisy conditions.

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Crack identification using wavelets on experimental static deflection profiles

Cited by 112 publications

References 15 publications

On the evaluation of interface quality in concrete repair system by means of impact-echo signal analysis

On the evaluation of interface quality in concrete repair system by means of impact-echo signal analysis

Structural Health Monitoring in Composite Automotive Elements

Wavelet 2D Modal Curvature for Identifying Non-Uniform Cracks in Plates under Noisy Conditions

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