Damage identification in composite materials using ultrasonic based Lamb wave method

Ben, B. Satish; Ben, B. A.; Karwal, Vikram; Yang, Seung-Han

doi:10.1016/j.measurement.2012.10.011

Cited by 68 publications

(30 citation statements)

References 17 publications

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“…With the help fitted peak value and percentage amplitude at constant gain 55 (db) Lamb waves generation frequency is identified for different materials. Figure 4 shows the histogram representation of % amplitude of the waveform with a bin range of 0-820 kHz of pulser [21,22]. The most effective range of frequencies to generate Lamb waves is 140-420 kHz.…”

Section: Generation Of Optimal Lamb Wavementioning

confidence: 99%

Damage Identification and Assessment Using Lamb Wave Propagation Parameters and Material Damping in FRP Composite Laminates

Ben¹,

Ben²

2020

Composite and Nanocomposite Materials - From Knowledge to Industrial Applications

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A methodology for identify damage in the fiber reinforced polymer (FRP) composite has been proposed in this article. The Lamb wave dispersion theory was used to find the fitted peak frequency and loss less finite element model was used to find the modal frequencies in the composite laminates. The change in modal parameters with respect to undamaged and damaged specimen has been considered for the structural diagnosis. The combined finite element and Lamb wave method has been used to obtain damping parameters. The damping capacity was calculated at higher frequency and smaller amplitudes by using hybrid method. The Lamb waves were generated using ultrasonic pulse generator setup. The proposed method was implemented on FRP laminates (CFRP and GFRP) and the results were compared with bandwidth method.

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Section: Generation Of Optimal Lamb Wavementioning

confidence: 99%

Damage Identification and Assessment Using Lamb Wave Propagation Parameters and Material Damping in FRP Composite Laminates

Ben¹,

Ben²

2020

Composite and Nanocomposite Materials - From Knowledge to Industrial Applications

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“…The paper [20] presents the method of damage identification in an aluminum plate with riveted stiffeners. Ultrasonic based Lamb wave method damage identification in composite materials is discussed elaborately [21].…”

Section: Introductionmentioning

confidence: 99%

Damage detection in structural element through propagating waves using radially weighted and factored RMS

2015

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“…These defects can significantly affect the mechanical properties of the structure, resulting in degradation of overall structural performance in operating condition and sometimes lead to some unexpected catastrophic failure. The existing structural health monitoring techniques like ultrasonic scanning technique [1] are generally offline in nature. Besides, these conventional methods of structural fault diagnosis are also time-consuming, expensive and laborious.…”

Section: Introductionmentioning

confidence: 99%

Fundamental Mode Shape to Localize Delamination in Cantilever Composite Plates Using Laser Doppler Vibrometer

Roy

Agrawal

Bhattacharya

et al. 2015

Advances in Structural Engineering

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The extensive usage of laminated composite plates in various industrial application and their often failure due to delamination encourage the researchers to focus on damage detection of these plates. This study mainly deals with structural damage detection of composite plates. Finite element models of composite plates have been developed and eigen analysis is carried out. Mode shape-based damage indices are proposed to identify delamination and its location. The difference in mode shapes corresponding to delaminated and healthy plates is found to be maximum at the location of damage. Experimental analyses have been performed on healthy as well as delaminated cantilever plates using three-dimensional laser Doppler vibrometer (LDV). The plates were scanned and the dynamic responses were recorded. The mode shapes were then estimated from the scanned response data. The experimental results are found to be in good agreement with that of the numerical illustration in identifying the damage location. The proposed methodology can thus be used in engineering and industrial applications to detect and localize damages in laminated composite plates.

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Damage identification in composite materials using ultrasonic based Lamb wave method

Cited by 68 publications

References 17 publications

Damage Identification and Assessment Using Lamb Wave Propagation Parameters and Material Damping in FRP Composite Laminates

Damage Identification and Assessment Using Lamb Wave Propagation Parameters and Material Damping in FRP Composite Laminates

Damage detection in structural element through propagating waves using radially weighted and factored RMS

Fundamental Mode Shape to Localize Delamination in Cantilever Composite Plates Using Laser Doppler Vibrometer

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