3D simulations and experiments of guided wave propagation in adhesively bonded multi-layered structures

Cerniglia, Donatella; Pantano, Antonio; Montinaro, Nicola

doi:10.1016/j.ndteint.2010.05.009

Cited by 39 publications

(21 citation statements)

References 18 publications

(24 reference statements)

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“…The ANSYS finite element software was used to obtain wave propagation through the 2D geometry which includes an implicit algorithm with Newmark time integration method for solving the transient wave propagation. The model of elastic wave propagation is based on the assumption of linear elasticity and solution of the Navier equation of the elastic wave motion in matrix form [38][39][40][41][42][43][44]:…”

Section: Transmission Losses Dependence From Lap Joint Width and Opermentioning

confidence: 99%

Ultrasonic Guided Wave Propagation through Welded Lap Joints

Jankauskas

Mažeika

2016

Metals

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Abstract:The objective of the research presented here is the investigation of ultrasonic guided wave (UGW) propagation through the lap joint welded plates used in the construction of a storage tank floors. The investigations have been performed using numerical simulation by finite element method (FEM) and tested by measurement of the transmission losses of the guided waves transmitted through the welded lap joints. Propagation of the symmetric S 0 mode in the welded stainless steel plates in the cases of different lap joint overlap width, operation frequency, and additional plate bonding caused by corrosion were investigated. It was shown that the transmission losses of the S 0 mode can vary in the range of 2 dB to 8 dB depending on the ratio between lap joint width and wavelength. It was also demonstrated that additional bonding in the overlap zone caused by corrosion can essentially reduce transmission losses.

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Section: Transmission Losses Dependence From Lap Joint Width and Opermentioning

confidence: 99%

Ultrasonic Guided Wave Propagation through Welded Lap Joints

Jankauskas

Mažeika

2016

Metals

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“…The rule of element size is that there are more than 10 nodes in a wavelength generally. To ensure the propagation of energy between two successive nodes in the mesh, the recommended mesh size can be expressed as [18] L e = min 20 (15) where L e is the element length and min is the shortest wavelength of laser ultrasound. The dimensions of 45 # steel, epoxy resin and lead alloy used in simulation calculation are 20mm × 4 mm, 20 mm × 0.1 mm and 20 mm × 1 mm, respectively, and the three materials are organized the bonding.…”

Section: Finite Element Methodsmentioning

confidence: 99%

Characteristics of laser ultrasound interaction with multi-layered dissimilar metals adhesive interface by numerical simulation

Zhang

Zhou

Jing-lun

et al. 2015

Applied Surface Science

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“…Beside the spatial discretization, time incrementation of Equation (6) is needed as well. The minimum requirement to ensure numerical stability of time integration is the Courant-Friedrich-Lewy (CFL) condition [40,[43][44][45].…”

Section: Simulation Of Lamb Wave Propagationmentioning

confidence: 99%

Transducer Placement Option of Lamb Wave SHM System for Hotspot Damage Monitoring

2018

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Abstract:In this paper, we investigated transducer placement strategies for detecting cracks in primary aircraft structures using ultrasonic Structural Health Monitoring (SHM). The approach developed is for an expected damage location based on fracture mechanics, for example fatigue crack growth in a high stress location. To assess the performance of the developed approach, finite-element (FE) modelling of a damage-tolerant aluminum fuselage has been performed by introducing an artificial crack at a rivet hole into the structural FE model and assessing its influence on the Lamb wave propagation, compared to a baseline measurement simulation. The efficient practical sensor position was determined from the largest change in area that is covered by reflected and missing wave scatter using an additive color model. Blob detection algorithms were employed to determine the boundaries of this area and to calculate the blob centroid. To demonstrate that the technique can be generalized, the results from different crack lengths and from tilted crack are also presented.

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3D simulations and experiments of guided wave propagation in adhesively bonded multi-layered structures

Cited by 39 publications

References 18 publications

Ultrasonic Guided Wave Propagation through Welded Lap Joints

Ultrasonic Guided Wave Propagation through Welded Lap Joints

Characteristics of laser ultrasound interaction with multi-layered dissimilar metals adhesive interface by numerical simulation

Transducer Placement Option of Lamb Wave SHM System for Hotspot Damage Monitoring

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