Abstract
The Algorithm to solve refraction effect of sound wave paths for acoustic CT (computer tomography) is developed. Ordinary CT algorithm, that is, kinds of Fourier transformation, is hard to take into account of deflection of projection beams. In this paper, the least square method is employed to reconstruct two-dimensional temperature distribution from refracted beams due to refraction effect. Refracted sound wave paths are analyzed by Fermat's theorem. Refraction analysis and reconstruction of temperature distribution are impossible to do simultaneously and they are solved with iteration method. The algorithm is confirmed by the data made by computer simulation. The measurement field is assumed as circle and sixteen speakers are set around it. Those speakers are used also as receivers. Measurement field is divided into nine for lateral and vertical directions. The results excluding and including the refraction effect are compared. It is shown that the accuracy of the latter case is extremely superior than the former one.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
