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- W1502098037 abstract "In the immersion testing of components made of anisotropic materials, such as composites, the sound beam of an ultrasonic transducer is strongly affected by both the surface geometry of the component and the nature of the anisotropy. To date, ultrasonic beam models typically can handle effectively only special geometry cases (e.g. beam aligned with principal curvature axes) and special material conditions such as specific types of anisotropy (transverse isotropy, etc.) or material directions (alignment with acoustic axes of symmetry). Such limitations make it difficult to use such models in performing general ultrasonic simulations. To remedy this problem, we have recently developed a new ultrasonic beam model that can handle, with few limitations, both general interface geometries and general anisotropic material properties. The model uses a combination of the paraxial approximation and superposition of multiple Gaussians to produce a formulation that is simple in structure, computationally very efficient, and completely analytical in nature (only functional evaluations are required in the model). The model obtains these very desirable properties by extending a modeling approach used in optics based on an angular eikonal formulation. Here, we will describe the model and illustrate its use in various testing geometries and anisotropic materials where focusing/defocusing effects, beam skewing, and the appearance of anomalous modes can be present." @default.
- W1502098037 created "2016-06-24" @default.
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- W1502098037 date "2000-01-01" @default.
- W1502098037 modified "2023-10-16" @default.
- W1502098037 title "Modeling ultrasonic transducer fields for a general complex geometry and anisotropic material" @default.
- W1502098037 cites W1670916177 @default.
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- W1502098037 doi "https://doi.org/10.1063/1.1306147" @default.
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