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ultrasonics
Mizrach, A., Institute of Agricultural Engineering, A.R.O., The Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Galili, N., Faculty of Civil and Environment Engineering, The Technion - Israel Institute of Technology, Haifa, Israel
Rosenhouse, G., Faculty of Civil and Environment Engineering, The Technion - Israel Institute of Technology, Haifa, Israel
A theoretical model was suggested for qualitative evaluation of a sound pressure field in fruit tissue, as affected by ultrasonic probe dimensions and fruit properties. The classic directivity pattern of an ideal fluid model, expressed by Bessel function of the first kind, was extended to include energy dissipation of a real material. The directional characteristics of wave propagation, as influenced by transmitter frequency and diameter, and by fruit properties, were discussed. The model indicates how to select the parameters of the ultrasonic transducer (transducer diameter, frequency and excitation power) to control the magnitude and directivity of the ultrasonic waves in the fruit tissue. The suggested theoretical model represented fairly well the experimental sound wave distribution over the half-cut surface of potato and avocado (R2 > 0.862 and 0.977, respectively); the same theoretical model could not represent the sound wave distribution over a half-cut melon. Results of the study were applied in a new probe design for ultrasonic testing of whole fruit. © 2008 Elsevier B.V. All rights reserved.
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הספר "אוצר וולקני"
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תנאי שימוש
3-D Model of sound pressure field in a meridinal section plane of fruit
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Mizrach, A., Institute of Agricultural Engineering, A.R.O., The Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Galili, N., Faculty of Civil and Environment Engineering, The Technion - Israel Institute of Technology, Haifa, Israel
Rosenhouse, G., Faculty of Civil and Environment Engineering, The Technion - Israel Institute of Technology, Haifa, Israel
3-D Model of sound pressure field in a meridinal section plane of fruit
A theoretical model was suggested for qualitative evaluation of a sound pressure field in fruit tissue, as affected by ultrasonic probe dimensions and fruit properties. The classic directivity pattern of an ideal fluid model, expressed by Bessel function of the first kind, was extended to include energy dissipation of a real material. The directional characteristics of wave propagation, as influenced by transmitter frequency and diameter, and by fruit properties, were discussed. The model indicates how to select the parameters of the ultrasonic transducer (transducer diameter, frequency and excitation power) to control the magnitude and directivity of the ultrasonic waves in the fruit tissue. The suggested theoretical model represented fairly well the experimental sound wave distribution over the half-cut surface of potato and avocado (R2 > 0.862 and 0.977, respectively); the same theoretical model could not represent the sound wave distribution over a half-cut melon. Results of the study were applied in a new probe design for ultrasonic testing of whole fruit. © 2008 Elsevier B.V. All rights reserved.
Scientific Publication
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