Interfacial adhesion (kissing bond) detection using shear horizontal (SH) waves
Dileep Koodalil,David Barnoncel,Prabhu Rajagopal,Krishnan Balasubramaniam +3 more
- Vol. 2102, Iss: 1, pp 020042
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TLDR
In this article, the horizontal polarized shear (SH) ultrasonic guided wave modes are considered to infer adhesion changes at different interfaces and different cases of interfacial adhesion were simulated by changing the boundary condition at both aluminium-epoxy-aluminium interfaces.Abstract:
Horizontally polarized shear (SH) ultrasonic guided wave modes are considered to infer adhesion changes at different interfaces. In this study, the SH0 interaction with different lap joints are investigated. Experiments were performed on aluminium lap joint samples. Aluminium surfaces were prepared in a specific way to vary the adhesion. SH modes are generated and received using periodic permanent magnet (PPM) electromagnetic acoustic transducers (EMATs), the periodicity of which is equal to the wavelength of the transducer. SH0 is generated in the plate that comprises the lap joint and received in transmission mode. Distinct signatures were observed for different samples. To investigate the physics of interaction with tri-layer and to corroborate the experiment results, three dimensional finite element (FE) models were developed. Different cases of interfacial adhesion were simulated by changing the boundary condition at both aluminium-epoxy-aluminium interfaces. This work shows the potential of SH modes for quantifying properties at adhesive interfaces.read more
Citations
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Journal ArticleDOI
Detection of interfacial weakness in a lap-shear joint using shear horizontal guided waves
TL;DR: In this paper, a 3-D multi-physics finite element model was developed to investigate the physics of the interaction of SH modes with a tri-layer structure and different cases of interfacial adhesion ranging from perfect bond, intermediate and weak bond, were simulated.
Journal ArticleDOI
Bond stiffness estimation with shear horizontal guided waves generated using PPM-EMATs
TL;DR: In this paper, the authors developed a technique for estimating an aluminium/epoxy/aluminium lap shear joint stiffness using periodic permanent magnet electromagnetic acoustic transducers (PPM EMATs).
Journal ArticleDOI
Quantifying adhesive thickness and adhesion parameters using higher-order SH guided waves.
TL;DR: In this article, a method to quantify the interface shear stiffness, adhesive shear modulus and adhesive thickness in an aluminium-epoxy-aluminium joint is presented, where the dispersion analysis reveals that higher-order anti-symmetric modes are sensitive to all three parameters.
Book ChapterDOI
Coded Excitation for Low-Power Operation in Guided Ultrasonic Wave Non-destructive Evaluation
TL;DR: The pulse compression-based coded excitation technique for low-power operation and enhanced SNR results for guided ultrasonic wave NDE is presented.
Book ChapterDOI
Detection of Interfacial Weakness (Kissing Bonds) in Honeycomb Sandwich Structure Using Guided Waves
TL;DR: In this article , a shear-horizontal (SH) guided wave-based technique was proposed to evaluate the interfacial weakness in an aluminium honeycomb sandwich structure, where the particle vibration in SH-guided waves is parallel to the adhesive-adherent interface, thus improving sensitivity in detecting interfacial properties.
References
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Michel Castaings,Bernard Hosten +1 more
TL;DR: The propagation of Lamb-like waves in sandwich plates made of anisotropic and viscoelastic material layers is studied and the mode-coupling phenomenon is confirmed, and the potential of the air-couple system for developing single-sided, contactless, NDT applications of such structures is discussed.
Journal ArticleDOI
SH ultrasonic guided waves for the evaluation of interfacial adhesion.
TL;DR: This work suggests a promising use of SH-like guided modes for quantifying shear properties at adhesive interfaces, and shows that such waves can be used for inferring adhesive and cohesive properties of bonds separately.
Proceedings ArticleDOI
An EMAT-based shear horizontal (SH) wave technique for adhesive bond inspection
TL;DR: In this paper, a new technique based on SH guided waves that propagate within and through a lap joint is described, which can discriminate between adhesive and cohesive bond weakness in both Aluminum-Epoxy-Aluminum and Composite-Epoxide-Composite lap joints.