Topology optimization of the element connections in transducer arrays

Yuan Lin; Karl Grosh

doi:10.1117/12.388783

19 June 2000 Topology optimization of the element connections in transducer arrays

Yuan Lin, Karl Grosh

Proceedings Volume 3984, Smart Structures and Materials 2000: Mathematics and Control in Smart Structures; (2000) https://doi.org/10.1117/12.388783
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

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.

Citation Download Citation

Yuan Lin and Karl Grosh "Topology optimization of the element connections in transducer arrays", Proc. SPIE 3984, Smart Structures and Materials 2000: Mathematics and Control in Smart Structures, (19 June 2000); https://doi.org/10.1117/12.388783

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