Scaled behavior of interface waves at an imperfect solid-solid interface

Valier‐Brasier, Tony; Dehoux, Thomas; Audoin, Bertrand

doi:10.1063/1.4733949

Cited by 26 publications

(8 citation statements)

References 65 publications

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“…The bonding between two solid plates can be probed by various ultrasonic techniques: longitudinal and shear waves reflection or transmission at the interface, 1,2 thickness resonances, 3 ultrasonic guided waves propagating along the interface. [4][5][6][7][8] All these methods require a modelisation of the ultrasonic wave interaction with the interface supposed homogeneous. 9 Recently it was shown that Zero-Group Velocity (ZGV) Lamb modes associated with laser ultrasonic techniques, allow a local and non contact measurement of mechanical properties of isotropic or anisotropic plates and shells.…”

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confidence: 99%

Non contact probing of interfacial stiffnesses between two plates by zero-group velocity Lamb modes

Mézil

Laurent

Royer

et al. 2014

Applied Physics Letters

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A non contact technique using Zero-Group Velocity (ZGV) Lamb modes is developed to probe the bonding between two solid plates coupled by a thin layer. The layer thickness is assumed to be negligible compared with the plate thickness and the acoustic wavelength. The coupling layer is modeled by a normal and a tangential spring to take into account the normal and shear interfacial stresses. Theoretical ZGV frequencies are determined for a symmetrical bi-layer structure and the effect of the interfacial stiffnesses on the cut-off and ZGV frequencies are evaluated. Experiments are conducted with two glass plates bonded by a drop of water, oil, or salol, leading to a few micrometer thick layer. An evaluation of normal and shear stiffnesses, is obtained using ZGV resonances locally excited and detected with laser ultrasonic techniques.PACS numbers: 43.20. Gp, 43.35.Zc, 62.30.+d, 68.60.Bs, 79.20.Ds The increasing use of adhesive bonding in the industry has been motivated by the need of stronger and lighter structures. This technique is more suitable for providing continuous adhesion properties and easier to process than other ones like welding, riveting or screwing. The bonding between two solid plates can be probed by various ultrasonic techniques: longitudinal and shear waves reflection or transmission at the interface, 1,2 thickness resonances, 3 ultrasonic guided waves propagating along the interface. 4-8 All these methods require a modelisation of the ultrasonic wave interaction with the interface supposed homogeneous. 9 Recently it was shown that Zero-Group Velocity (ZGV) Lamb modes associated with laser ultrasonic techniques, allow a local and non contact measurement of mechanical properties of isotropic or anisotropic plates and shells. 10,11 These ZGV modes, corresponding to a minimum frequency of dispersion curves, also exist in layered plate structures. 12 Local ZGV resonances have been used to image the lack of adhesive bond between two plates. 13In this letter a non contact method, based on the measurement of ZGV resonance frequencies is proposed to probe interfacial stiffnesses between two plates. An interfacial behavior model 9,16 is used to calculate the dispersion curves and Zero-Group Velocity Lamb modes in a symmetrical structure composed of two plates coupled by a thin layer. The ultrasonic wave interaction with the interface is described by spring boundary conditions. Firstly, the effect of longitudinal and transverse stiffnesses on cut-off and ZGV frequencies is studied. Secondly, experimental results with liquid or solid compliant layers are obtained by laser ultrasonic techniques. Then, the values of spring stiffnesses, estimated from ZGV resonance frequencies, are discussed.Theoretical model -The structure is composed of two identical, isotropic and homogeneous plates with a coupling layer in-between. 7 The plate thickness is denoted h and lateral dimensions are supposed infinite. Their mass density is denoted ρ and their bulk wave velocities c l and c t . The coupling layer thickness d is a...

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confidence: 99%

Non contact probing of interfacial stiffnesses between two plates by zero-group velocity Lamb modes

Mézil

Laurent

Royer

et al. 2014

Applied Physics Letters

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“…Two different types of modes, symmetric and antisymmetric, may propagate along the interface; the symmetric wave has a critical frequency below which its speed reaches the transverse wave velocity in the substrates and it becomes leaky [4,5]. It was also reported that interface waves can sense imperfect bonded interfaces and their velocities and attenuations reflect the degree of the interface imperfection [6][7][8][9]. To better understand the propagation behavior of the interface waves optical interferometric visualization techniques are useful when applied to transparent solids [2].…”

Section: Introductionmentioning

confidence: 96%

“…Many authors have utilized Rayleigh waves to generate the interface wave [6][7][8][9][10]. In this case, the interface wave is produced at an upward step corner.…”

Section: Introductionmentioning

confidence: 99%

Interface wave propagation and edge conversion at a low stiffness interphase layer between two solids: A numerical study

Cho

Rokhlin

2015

Ultrasonics

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“…The quality of adhesion can be probed by surface acoustic waves (SAWs) if the elastic properties are known. 6,7 The aim of this paper is, therefore, to estimate a value for the Young's modulus and porosity of a MnO 2 coating.…”

Section: Introductionmentioning

confidence: 99%

Determination of elastic properties of a MnO2 coating by surface acoustic wave velocity dispersion analysis

Sermeus

Sinha

Vanstreels

et al. 2014

Journal of Applied Physics

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Surface acoustic wave investigations of the metal-to-insulator transition of V 2 O 3 thin films on lithium niobate J. Appl. Phys. 98, 084111 (2005); 10.1063/1.2103410 Temperature stable LiNb O 3 surface acoustic wave device with diode sputtered amorphous Te O 2 over-layer Appl.MnO 2 is a material of interest in the development of high energy-density batteries, specifically as a coating material for internal 3D structures, thus ensuring rapid energy deployment. Its electrochemical properties have been mapped extensively, but there are, to the best of the authors' knowledge, no records of the elastic properties of thin film MnO 2 . Impulsive stimulated thermal scattering (ISTS), also known as the heterodyne diffraction or transient grating technique, was used to determine the Young's modulus (E) and porosity (w) of a 500 nm thick MnO 2 coating on a Si(001) substrate. ISTS is an all optical method that is able to excite and detect surface acoustic waves (SAWs) on opaque samples. From the measured SAW velocity dispersion, the Young's modulus and porosity were determined to be E ¼ 25 6 1 GPa and w ¼ 4261%, respectively. These values were confirmed by independent techniques and determined by a most-squares analysis of the carefully fitted SAW velocity dispersion. This study demonstrates the ability of the presented technique to determine the elastic parameters of a thin, porous film on an anisotropic substrate. V C 2014 AIP Publishing LLC. [http://dx.

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Scaled behavior of interface waves at an imperfect solid-solid interface

Cited by 26 publications

References 65 publications

Non contact probing of interfacial stiffnesses between two plates by zero-group velocity Lamb modes

Non contact probing of interfacial stiffnesses between two plates by zero-group velocity Lamb modes

Interface wave propagation and edge conversion at a low stiffness interphase layer between two solids: A numerical study

Determination of elastic properties of a MnO2 coating by surface acoustic wave velocity dispersion analysis

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