Nondestructive evaluation of FRP-reinforced structures bonded joints using acousto-ultrasonic: Towards diagnostic of damage state

Sarr, Cheikh; Chataigner, Sylvain; Gaillet, Laurent; Godin, Nathalie

doi:10.1016/j.conbuildmat.2021.125499

Cited by 20 publications

(19 citation statements)

References 36 publications

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“…Then, the classification method was applied to signals other than those used for the training step. Although the training was based on data from both receiver sensors, the detection and identification of the defect size was possible, since the obtained recognition rate of the void defect type was around 85% [24]. It is therefore crucial to quantify the influence of the defect size on the AU signal using modeling work, in order to add robustness to the proposed classification process.…”

Section: Summary Of the Experimental Resultsmentioning

confidence: 99%

“…In a previous paper [24] concerning the experimental characterization of metal/composite or concrete/composite assemblies using AU, we showed that the identification of this kind of defect is quite difficult. Nevertheless, the proposed methodology proved to be sensitive to all the studied defects in two different bonded assemblies.…”

Section: Introductionmentioning

confidence: 97%

“…In this context, several authors proposed the use of an acousto-ultrasonic (AU) method [18][19][20][21][22][23][24][25][26][27] to detect and assess defects. This technique was initially introduced and developed by Vary [18] and was rapidly used to characterize bonding [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Voids Detection in Bonded Metal/Composite Assemblies Using Acousto-Ultrasonic Method

et al. 2022

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This research focuses on the application of an acousto-ultrasonics (AU) technique, a combination of ultrasonic characterization and acoustic emission, to nondestructively detect defects such as voids in bonded metal/composite assemblies. Computational methods are established to examine the effects of voids on the collected signal. The position of the receiver sensor with respect to the defect is also investigated. Given a specific structure and type of actuation signal, the sensor location and probability of detection can be enhanced by the model developed in this work. The defect detection is optimal provided the receiver sensor is located around the epicenter of the defect. Moreover, this work highlights the importance of the choice of reception sensor.

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Section: Summary Of the Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Numerical Voids Detection in Bonded Metal/Composite Assemblies Using Acousto-Ultrasonic Method

et al. 2022

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“…Pan Q et al [ 9 ] explored the correlation between bonding defects and ultrasonic echo amplitude, propagation time, and phase in resin carbon fiber and aluminum bonding parts, validating the accuracy and reliability of this relationship through the test results of multilayer specimens containing defects. Sarr et al [ 10 ] performed experimental measurements on voids, debonding, and weak bonding defects in bonded structures using ultrasonic testing, employing a random forest algorithm to differentiate defect types. Numerous methods have been developed and have significantly advanced the field of defect detection in bonded structures.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Bonding Defects in Fiber-Reinforced Polymer-Bonded Structures Based on Ultrasonic Transmission Coefficient

Bian,

Wu,

Liu

et al. 2024

Materials

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This research delves into the characterization of the ultrasonic transmission coefficient pertaining to various types of bonding defects in Fiber-Reinforced Polymer (FRP)-bonded structures. Initially, an ultrasonic transmission coefficient calculation model for FRP-bonded structures in a water immersion environment is established. This model is used to analyze the variation in the ultrasonic transmission coefficient under different defect types, namely intact bonding, interfacial slip, and debonding defects. Subsequently, a frequency domain finite element analysis model of FRP-bonded structures with different defect types is constructed. The simulation validates the accuracy of the theoretical analysis results and concurrently analyzes the variation in the transmission signal when the defects alter. Lastly, an experimental platform for water immersion ultrasonic transmission measurement is set up. The transmission signals under different defect types are extracted through experiments and evaluated in conjunction with theoretical calculations to assess the types of bonding defects.

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“…Moving forward, plate waves especially in relation to smart structures with permanently implanted or attached sensors are relevant to the structural health monitoring (SHM) industry, including the research based on the Lamb wave dispersion equations proposed by Viktorov [6] and Rose [19]. However, Lamb waves application and propagation characteristics in AU technique is still at the initial phase of research [20] . Hence, it is important to investigate into the AU wave propagation behaviour in an isotropic plate structure for a deeper understanding.…”

Section: Introductionmentioning

confidence: 99%

Determination of acousto-ultrasonic wave propagation in an isotropic aluminium Al6082-T6 plate

PRASAD,

Jombo,

Ismail

et al. 2023

Preprint

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The ability to guarantee reliable and damage-tolerant operation of structures is critical to their safe operation. Various non-destructive evaluation (NDE) techniques, such as ultrasonics, acoustic emission, thermography, acousto-ultrasonics (AU), among others could potentially provide a means of inspecting cracks, defects and damage responses in structures. The main aim of this study is to look into the physical problem of AU wave propagation through an isotropic plate and its analytical validation, using wave dispersion concept. The experimental investigation was conducted on aluminium Al6082-T6 alloy plate specimen. Wave propagation speed on top and bottom surfaces of the plate was investigated. The variation of the wave speed and attenuation with frequency were identified. From the results obtained experimentally, the wave dispersion was verified analytically. Interestingly, Lamb waves were discovered to be the dominating AU waves. The wave was appreciably non-dispersive in the frequency extent from 150 kHz to 1 MHz and the attenuation coefficient was increased with the frequency. This finding provides a significant breakthrough to the implementation of acousto- ultrasonics in the non- destructive testing applications, such as accessing the damage in composite structures, including wind turbine blades. AU has an active sensing mechanism, providing an edge over acoustic emission (AE) method which is a passive mode of damage sensing and detection, as external loading is needed for the damage sensing.

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Nondestructive evaluation of FRP-reinforced structures bonded joints using acousto-ultrasonic: Towards diagnostic of damage state

Cited by 20 publications

References 36 publications

Numerical Voids Detection in Bonded Metal/Composite Assemblies Using Acousto-Ultrasonic Method

Numerical Voids Detection in Bonded Metal/Composite Assemblies Using Acousto-Ultrasonic Method

Characterization of Bonding Defects in Fiber-Reinforced Polymer-Bonded Structures Based on Ultrasonic Transmission Coefficient

Determination of acousto-ultrasonic wave propagation in an isotropic aluminium Al6082-T6 plate

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