Pencil method in elastodynamics: application to ultrasonic field computation

Gengembre, Nicolas; Lhémery, Alain

doi:10.1016/s0041-624x(99)00068-2

Cited by 56 publications

(38 citation statements)

References 2 publications

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“…A semi-analytical propagation model [1], based on ray theory, has been implemented in the CIVA software [2], developed by CEA-LIST. It can compute the elastic wavefield propagating in anisotropic media as well as its interaction with different flaws.…”

Section: Ray-based Model Applied On Homogenized Laminatementioning

confidence: 99%

Hybrid ray-FDTD model for the simulation of the ultrasonic inspection of CFRP parts

Jezzine¹,

Ségur²,

Ecault³

et al. 2017

AIP Conference Proceedings

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Section: Ray-based Model Applied On Homogenized Laminatementioning

confidence: 99%

Hybrid ray-FDTD model for the simulation of the ultrasonic inspection of CFRP parts

Jezzine¹,

Ségur²,

Ecault³

et al. 2017

AIP Conference Proceedings

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“…method -or pencil method -currently used in CIVA [6]. In its current version, the wave-front is basically cut into pencils that are characterized by an axial ray and paraxial data.…”

Section: -3mentioning

confidence: 99%

High performance ultrasonic field simulation on complex geometries

Chouh¹,

Rougeron²,

Chatillon³

et al. 2016

AIP Conference Proceedings

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Abstract. Ultrasonic field simulation is a key ingredient for the design of new testing methods as well as a crucial step for NDT inspection simulation. As presented in a previous paper [1], CEA-LIST has worked on the acceleration of these simulations focusing on simple geometries (planar interfaces, isotropic materials). In this context, significant accelerations were achieved on multicore processors and GPUs (Graphics Processing Units), bringing the execution time of realistic computations in the 0.1 s range.In this paper, we present recent works that aim at similar performances on a wider range of configurations. We adapted the physical model used by the CIVA platform to design and implement a new algorithm providing a fast ultrasonic field simulation that yields nearly interactive results for complex cases. The improvements over the CIVA pencil-tracing method include adaptive strategies for pencil subdivisions to achieve a good refinement of the sensor geometry while keeping a reasonable number of ray-tracing operations. Also, interpolation of the times of flight was used to avoid time consuming computations in the impulse response reconstruction stage.To achieve the best performance, our algorithm runs on multi-core superscalar CPUs and uses high performance specialized libraries such as Intel Embree for ray-tracing, Intel MKL for signal processing and Intel TBB for parallelization. We validated the simulation results by comparing them to the ones produced by CIVA on identical test configurations including mono-element and multiple-element transducers, homogeneous, meshed 3D CAD specimens, isotropic and anisotropic materials and wave paths that can involve several interactions with interfaces. We show performance results on complete simulations that achieve computation times in the 1s range.

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“…The acoustic wave beam generated by a transducer and then propagating in a homogeneous fluid can be modeled [10] by the radiation of a distribution of particle velocity sources at points 0 ( , ) yz  r over the surface P 0 . The Rayleigh integral describes the acoustic scalar field potential φ(r, t) at the considered field observation point r due to the sources located on the radiating surface P 0 (see Fig.…”

Section: Application: Simulation Of the Acoustic Wave Beam Emitted Bymentioning

confidence: 99%

Stochastic simulation for the propagation of high-frequency acoustic waves through a random velocity field

Lü¹,

Darmon²,

Leymarie³

et al. 2012

AIP Conference Proceedings

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Pencil method in elastodynamics: application to ultrasonic field computation

Cited by 56 publications

References 2 publications

Hybrid ray-FDTD model for the simulation of the ultrasonic inspection of CFRP parts

Hybrid ray-FDTD model for the simulation of the ultrasonic inspection of CFRP parts

High performance ultrasonic field simulation on complex geometries

Stochastic simulation for the propagation of high-frequency acoustic waves through a random velocity field

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