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Design and analysis of a nonrational B-spline profiled horn for high displacement amplification

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2 Author(s)
Huu Tu Nguyen ; Grad. Inst. of Precision Eng., Nat. Chung Hsing Univ., Taichung, Taiwan ; Dung-An Wang

A new horn for high displacement amplification is developed. The profile of the horn is a nonrational B-spline curve with an open uniform knot vector. The ultrasonic actuation of the horn exploits the first longitudinal displacement mode of the horn. The horn is designed by an optimization scheme. Performances of the proposed horn have been evaluated by experiments. The displacement amplification of the proposed horn is 41.4% and 8.6% higher than that of the traditional catenoidal horn and a Bézier-profile horn, respectively, with the same length and end surface diameters. The developed horn has a lower displacement amplification than the nonuniform rational B-spline profiled horn but a much smoother stress distribution.

Published in:

Ultrasonics Symposium (IUS), 2013 IEEE International

Date of Conference:

21-25 July 2013