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Proceedings Paper

Topology optimization of the element connections in transducer arrays
Author(s): Yuan Lin; Karl Grosh
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Paper Abstract

Cross-talk in transducer arrays is an important issue that affects the array performance. For therapeutic arrays and other arrays that are driven in continuous wave (CW) mode, the cross-talk between array elements reduce the acoustic power output and array directivity. This paper is devoted to the minimization of the cross-talk in air-backed arrays by optimizing the inter-element connections in the kerf. The kerf region is the design domain and the induced electric voltage on the passive element at a given operating frequency is the objective function. A density-based topology optimization problem is formulated and solved using the sequential linear programing (SLP). Preliminary optimization results for a three-element array are presented. The effectiveness of the design with respect to the cross-talk, far-field pressure level and directivity is discussed.

Paper Details

Date Published: 19 June 2000
PDF: 8 pages
Proc. SPIE 3984, Smart Structures and Materials 2000: Mathematics and Control in Smart Structures, (19 June 2000); doi: 10.1117/12.388783
Show Author Affiliations
Yuan Lin, Univ. of Michigan (United States)
Karl Grosh, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 3984:
Smart Structures and Materials 2000: Mathematics and Control in Smart Structures
Vasundara V. Varadan, Editor(s)

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