Numerical modeling of thermoelastic laser-generation of ultrasonic waves

Laser generation of ultrasound is investigated numerically in the presented paper. The coupled heat and wave equations are solved with Finite Difference Time Domain (FDTD) and Finite Element Methods (FEM). The influence of the thermal feedback on the propagating pulse shape is investigated providing...

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Bibliographic Details
Main Authors: Veres, I. A., Berer, T., Reitinger, B., Burgholzer, P.
Format: Conference Proceeding
Language:English
Subjects:
Acoustics
Couplings
Equations
Heating
laser-generation
Mathematical model
numerical solution
Propagation
Stress
ultrasonic waves
Online Access:Request full text
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Summary:Laser generation of ultrasound is investigated numerically in the presented paper. The coupled heat and wave equations are solved with Finite Difference Time Domain (FDTD) and Finite Element Methods (FEM). The influence of the thermal feedback on the propagating pulse shape is investigated providing evidence that the coupling introduces dispersion in a non-dispersive system. In addition, wave fields from a line focused source are presented by a numerical model.
ISSN:1051-0117
DOI:10.1109/ULTSYM.2011.0268