Apparent anisotropy of adhesive bonds with weak adhesion and non-destructive evaluation of interfacial properties

Siryabe, Emmanuel; Rénier, Mathieu; Méziane, Anissa; Galy, Jean; Castaings, Michel

doi:10.1016/j.ultras.2017.02.020

Cited by 31 publications

(11 citation statements)

References 56 publications

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“…The ability of ultrasound waves to penetrate opaque media, with possibility to generate guided waves, makes them the most promising in order to assess the adhesion quality between coatings and substrates, two substrates or two layers. Many authors have studied the interaction between ultrasonic waves and adhesive layers [2][3][4][5][6]. Their works addressed the case of normal and oblique incidence waves in pulse echo mode [2,5] and transmission mode [6].…”

Section: Introductionmentioning

confidence: 99%

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Modeling and numerical study of the influence of imperfect interface properties on the reflectance function for anisotropic multilayered structures

Loukkal

Lematre

Bavencoffe

et al. 2020

Journal of Sound and Vibration

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Section: Introductionmentioning

confidence: 99%

“…Many authors have studied the interaction between ultrasonic waves and adhesive layers [2][3][4][5][6]. Their works addressed the case of normal and oblique incidence waves in pulse echo mode [2,5] and transmission mode [6]. They evaluated also the adherence quality using Rayleigh waves [3] and leaky SAWs [4].…”

Section: Introductionmentioning

confidence: 99%

Modeling and numerical study of the influence of imperfect interface properties on the reflectance function for anisotropic multilayered structures

Loukkal

Lematre

Bavencoffe

et al. 2020

Journal of Sound and Vibration

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“…However, C-scan testing and radiography are not suitable for in-situ measurement of the bonding strength, because it needs measurement equipment outside of the production line and is time-consuming. There have been other ways to evaluate the bonding area with ultrasonic techniques including the A-scan method [18,19], resonant frequency measurement [20], cantilever test [21], electrical method [22], and thermographic test [23]. Application of an optical technique is an effective methodology for non-contact measurement.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Ultrasonic Bonding Strength with Optoacoustic Methods

2018

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This study reports the application of an optoacoustic method for evaluating the bonding strength of ultrasonically bonded joints in a non-destructive and non-contact fashion. It is proposed that the bonding strength is correlated with the resonant frequency of bonded joints. The bonding strength measured with a destructive tensile test roughly increased with the vibration time, however, it varied, causing the transitional and dispersed formation of micro-bonds at the bonding interface. Scanning Electron Microscopic observation of the fractured surface suggested that the bonding strength depends on the total bonded area of micro-bonds. Frequency response of the bonded joint was examined with a non-destructive method using a piezo-electric vibrator. The experiment revealed that the resonant frequency exponentially increased with the bonding strength. In addition, this vibration behavior was dynamically visualized with electronic speckle pattern interferometry (ESPI). The correlation between the bonded area and the resonant frequency is discussed based on finite element analysis. The results indicate the possibility for in-situ evaluation of the ultrasonic bonding strength.

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“…Intuitively, acoustic approaches appear to be more adapted to such quantification, as ultrasound is a technique based on mechanical displacement. Acoustic methods can be based on investigating the reflection or transmission of bulk waves at bonding interfaces, 4,5 using thickness resonances or guided waves. 6,7 Nonlinear approaches can also be used.…”

mentioning

confidence: 99%

“…8 Nevertheless, all these approaches are applied under academic bonds of low mechanical strength and none of them enables an absolute mechanical quantification of the tested bond. 5,7 Therefore, despite the interest in such results, structural bonding certification is still far from being realized.…”

mentioning

confidence: 99%

Quantitative evaluation of the mechanical strength of titanium/composite bonding using laser-generated shock waves

Ducousso

Bardy

Rouchausse

et al. 2018

Applied Physics Letters

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Intense acoustic shock waves were applied to evaluate the mechanical strength of structural epoxy bonds between a TA6V4 titanium alloy and a 3D woven carbon/epoxy composite material. Two bond types with different mechanical strengths were obtained from two different adhesive reticulations, at 50% and 90% of conversion, resulting in longitudinal static strengths of 10 and 39 MPa and transverse strengths of 15 and 35 MPa, respectively. The GPa shock waves were generated using ns-scale intense laser pulses and reaction principles to a confined plasma expansion. Simulations taking into account the laser–matter interaction, plasma relaxation, and non-linear shock wave propagation were conducted to aid interpretation of the experiments. Good correlations were obtained between the experiments and the simulation and between different measurement methods of the mechanical strength (normalized tests vs laser-generated shock waves). Such results open the door toward certification of structural bonding.

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Apparent anisotropy of adhesive bonds with weak adhesion and non-destructive evaluation of interfacial properties

Cited by 31 publications

References 56 publications

Modeling and numerical study of the influence of imperfect interface properties on the reflectance function for anisotropic multilayered structures

Modeling and numerical study of the influence of imperfect interface properties on the reflectance function for anisotropic multilayered structures

Evaluation of Ultrasonic Bonding Strength with Optoacoustic Methods

Quantitative evaluation of the mechanical strength of titanium/composite bonding using laser-generated shock waves

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