Detection of cracks in simply-supported beams by continuous wavelet transform of reconstructed modal data

Zhong, Shuncong; Oyadiji, S. Olutunde

doi:10.1016/j.compstruc.2010.08.008

Cited by 75 publications

(45 citation statements)

References 29 publications

(29 reference statements)

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“…Single and two edge cracks were evaluated. Zong and Oyadiji [8] proposed a new approach for damage detection in beam-like structures with small cracks without baseline modal parameters. Jiang et al [9] stated a new method for crack detection in beams using the slop of mode shape.…”

Section: Introductionmentioning

confidence: 99%

Crack Investigation of Rotating Cantilever Beam by Fractal Dimension Analysis

Banerjee¹,

Pohit²

2014

Procedia Technology

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Cracks reduce the service life of structures. A crack in a structural member introduces local flexibility that would affect vibration response of the structure. Both the mode shape and frequency change significantly due to the presence of crack. The objective of this paper is to obtain information about the location and depth of transverse open multiple cracks in a rotating cantilever beams. Vibration parameter in the form of mode shape of damaged rotating beam is obtained using finite element simulation. Using fractal dimension of mode shape profile, damage is detected. It is also shown that this method can produce satisfactory results with some limitation based on profile.

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Section: Introductionmentioning

confidence: 99%

Crack Investigation of Rotating Cantilever Beam by Fractal Dimension Analysis

Banerjee¹,

Pohit²

2014

Procedia Technology

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“…Kim and Sohn [137] developed a guided-wave-based nondestructive testing to detect crack damage in a thin metal structure without using prior baseline data. Zhong and Oyadiji [138,139] presented a crack detection method based on finding the difference between two sets of detail coefficients obtained by using the wavelet transform of two sets of mode shape data of a cracked beam. Rucevskis et al [140] described a method that requires only the mode shape curvature data of the damaged plate-like structures, in which the damage index is defined as the absolute difference between the measured curvature of the damaged structure and the smoothed polynomial representing the curvature of the healthy structure.…”

Section: Mapping Model and Meta-modelmentioning

confidence: 99%

The State-of-the-Art on Framework of Vibration-Based Structural Damage Identification for Decision Making

2017

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Abstract:Research on detecting structural damage at the earliest possible stage has been an interesting topic for decades. Among them, the vibration-based damage detection method as a global technique is especially pervasive. The present study reviewed the state-of-the-art on the framework of vibration-based damage identification in different levels including the prediction of the remaining useful life of structures and the decision making for proper actions. This framework consists of several major parts including the detection of damage occurrence using response-based methods, building reasonable structural models, selecting damage parameters and constructing objective functions with sensitivity analysis, adopting optimization techniques to solve the problem, predicting the remaining useful life of structures, and making decisions for the next actions. For each part, the commonly used methods were reviewed and the merits and drawbacks were summarized to give recommendations. This framework is aimed to guide the researchers and engineers to implement step by step the structure damage identification using vibration measurements. Finally, the future research work in this field is recommended.

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“…In the last few decades, many damage identification methods have been developed using the vibration data in frequency domain [1][2][3][4]. Moreover, with the advantage of massive vibration data, methods in time domain [5][6][7][8] emerged serve as a more reliable but complicated aspect in damage identification.…”

Section: Introductionmentioning

confidence: 99%

A two-step approach for damage detection in beam based on influence line and bird mating optimizer

Tan¹,

Lu²

2017

Vib. proced.

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Abstract. This paper presents a two-step approach for structural damage identification in beam structure using the influence line and bird mating optimizer (BMO). Local damage is simulated as the reduction of the elemental Young's modulus and mass of beam element. The technique for damage localization based on influence line and its derivatives before and after damage for beam structure was outlined. An objective function comprised of dynamic acceleration is utilized for BMO algorithm. The dynamic response data under external force is calculated by Newmark integration method. Numerical examples of a simply supported beam was investigated. Effect of measurement noise is studied. Studies in the paper indicate that the proposed method is efficient and robust for identifying damages in beam structures.

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Detection of cracks in simply-supported beams by continuous wavelet transform of reconstructed modal data

Cited by 75 publications

References 29 publications

Crack Investigation of Rotating Cantilever Beam by Fractal Dimension Analysis

Crack Investigation of Rotating Cantilever Beam by Fractal Dimension Analysis

The State-of-the-Art on Framework of Vibration-Based Structural Damage Identification for Decision Making

A two-step approach for damage detection in beam based on influence line and bird mating optimizer

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