Lamb Modes for the Characterization of Bonded Structures

Ismaili, N. Alaoui; Silva, C. De Mello da; Elkettani, Mounsif Echcherif; Despaux, Gilles; Rousseau, Martine; Izbicki, J-L.

doi:10.3813/aaa.918615

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…The use of ultrasonic waves to non-destructively inspect the adhesive bonding strength has become one of the most extensively applied technologies [5]. Many works have been reported on the general topic of ultrasonic non-destructive evaluation (NDE) of adhesive bonds, using mainly either Lamb or Shear-Horizontal (SH) guided waves [6][7][8][9] as they are found to be efficient to characterize adhesive bond properties [10][11][12][13]. In this work, we present an evaluation of the bonding quality using SH ultrasonic guided waves.…”

Section: Introductionmentioning

confidence: 99%

Detection of kissing bond type defects and evaluation of the bonding quality in metal/adhesive/composite structures by a wavenumber-frequency insensitive SH mode

Attar

Kettani

Leduc

et al. 2023

NDT & E International

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Section: Introductionmentioning

confidence: 99%

Detection of kissing bond type defects and evaluation of the bonding quality in metal/adhesive/composite structures by a wavenumber-frequency insensitive SH mode

Attar

Kettani

Leduc

et al. 2023

NDT & E International

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“…15,17,18 Recently, several authors used guided waves to study the wave propagation in elastic-viscoelastic, soft-stiff multilayers for the bond strength evaluation. [19][20][21][22][23][24][25][26] Mehrabi et al 3 and Mehrabi and Soorgee 19 used ultrasonic Lamb waves for cure monitoring of adhesive layers and to detect the coating disbond in a double-layer waveguide (aluminium-adhesive) and a triple-layer waveguide (aluminium-adhesive-coating) through experimental and numerical studies. Koodalil et al 27,28 developed a technique that uses shear horizontal guided waves generated with periodic permanent magnet electromagnetic acoustic transducers (PPM EMATs) to quantify the interfacial adhesion of aluminium-epoxyaluminium tri-layer in a lap shear joint.…”

Section: Introductionmentioning

confidence: 99%

A study on the use of fundamental antisymmetric-like guided wave for health monitoring of elastic–viscoelastic bilayer structures

Ghose

Panda

Balasubramaniam

2022

Structural Health Monitoring

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This study investigates the ultrasonic guided wave propagation in an elastic–viscoelastic (steel–rubber) bilayer structure. 2D finite element models are developed in the frequency domain to simulate the wave propagation in the steel–rubber bilayer structure. The guided wave A0 mode is generated in the bilayer with a contact L-wave probe and detected with an out-of-plane laser vibrometer. Several wave features, such as amplitude, phase velocity and phase delay, are measured and compared to determine the characteristic changes of the A0 wave mode in the steel layer alone as well as in the bilayer structure. Studies are also performed for the bilayer structure when excited from the steel and rubber surfaces. The amplitude and phase velocity of the A0 mode are reduced in the bilayer compared to the steel layer alone. The phase velocity of the A0 wave mode in the bilayer does not depend on the viscoelastic properties of the rubber layer, rather depends only on the elastic properties of the rubber layer. The viscoelastic rubber layer in the bilayer structure does not sustain any independent wave mode; instead, it carries the A0 mode of the steel layer alone as a modified A0 wave mode in the bilayer structure. A parametric numerical study of the viscoelasticity of the rubber layer in the bilayer structure shows that the attenuation of the modified A0 mode in the bilayer is more affected by the bulk S-wave attenuation than the bulk L-wave attenuation. The rate of attenuation of the modified A0 mode in the bilayer is faster on the rubber surface than on the steel surface. A study on the A0 wave mode interaction with the interfacial disbond between steel and rubber layers is also carried out.

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“…As pointed out by Rokhlin [5,27] both interface-wave and Lamb wave are useful to examine the adhesive bond quality based on both the phase delay and the phase velocity. In particular, numerous researchers have made use of specific Lamb waves modes, in which both asymmetric and symmetric modes were successfully able to monitor the integrity of three-layer bonding structures [28][29][30][31]. Using zero-group velocity Lamb wave modes generated by laser-ultrasound, Spytek et al [32] identified and imaged debonding defects between various layers of epoxy-bonded aluminium plates.…”

Section: Introductionmentioning

confidence: 99%

A novel application of ultrasonic Lamb waves: studying adhesive effects on the inspection of coating debonding in a three-layer waveguide

Mehrabi

Soorgee

Habibi

et al. 2020

Nondestructive Testing and Evaluation

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In this research, a thorough experimental and numerical study is conducted to investigate a novel application of the ultrasonic Lamb waves which is its capability to detect of the coating disbond in a double-layer waveguide (aluminium-adhesive) and a triple-layer waveguide (aluminium-adhesive-coating). The experimental tests are set up and implemented to evaluate how the attenuation of Lamb waves is affected by the adhesive bonding beside the contribution of the coating layer to the behaviour of Lamb waves. The semi-analytical finite element (SAFE) method is employed to analyse and identify the properties of guided wave modes propagating along the coated structures. In the presence of additive white Gaussian noise (AWGN), a range of important indices including energy index (EI), amplitude index (AI), pulse width index (PWI), and the time of flight index (ToFI) are worked out in association with the disbond length. It is inferred that a) even in the very noisy environment of 0 dB SNR, the Lamb waves are effectively able to identify debonding defects particularly using the EI, giving sensitivity rates 105% and 30% for triple-layer and double-layer, respectively; b) the contribution of adhesive to the absorption of the guided wave energy is 30%, 40%, and 50% in EI, AI, and PWI, respectively, corroborating the value of the features to distinguish the debonding between each layer of bonded structures.

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Lamb Modes for the Characterization of Bonded Structures

Cited by 5 publications

References 13 publications

Detection of kissing bond type defects and evaluation of the bonding quality in metal/adhesive/composite structures by a wavenumber-frequency insensitive SH mode

Detection of kissing bond type defects and evaluation of the bonding quality in metal/adhesive/composite structures by a wavenumber-frequency insensitive SH mode

A study on the use of fundamental antisymmetric-like guided wave for health monitoring of elastic–viscoelastic bilayer structures

A novel application of ultrasonic Lamb waves: studying adhesive effects on the inspection of coating debonding in a three-layer waveguide

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