Multiobjective optimization of an ultrasonic transducer using NIMBUS

Erkki Heikkola, Kaisa Miettinen, Paavo Nieminen (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

38 Citations (Scopus)

Abstract

The optimal design of an ultrasonic transducer is a multiobjective optimization problem since the final outcome needs to satisfy several conflicting criteria. Simulation tools are often used to avoid expensive and time-consuming experiments, but even simulations may be inefficient and lead to inadequate results if they are based only on trial and error. In this work, the interactive multiobjective optimization method NIMBUS is applied in designing a high-power ultrasonic transducer. The performance of the transducer is simulated with a finite element model, and three design goals are formulated as objective functions to be minimized. To find an appropriate compromise solution, additional preference information is needed from a decision maker, who in our case is an expert in transducer design. A realistic design problem is formulated, and an interactive solution process is described. Our findings demonstrate that interactive multiobjective optimization methods, combined with numerical simulation models, can efficiently help in finding new solution approaches and possibilities as well as new understanding of real-life problems as entirenesses. In this case, the decision maker found a solution that was better with respect to all three objectives than the conventional unoptimized design.
Original languageEnglish
Pages (from-to)368-380
Number of pages13
JournalUltrasonics
Volume44
Issue number4
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

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transducers
ultrasonics
optimization
simulation

Keywords

  • high-power ultrasonics
  • interactive multiobjective optimization
  • modelling
  • simulation
  • transducer design

Cite this

Heikkola, Erkki ; Miettinen, Kaisa ; Nieminen, Paavo. / Multiobjective optimization of an ultrasonic transducer using NIMBUS. In: Ultrasonics. 2006 ; Vol. 44, No. 4. pp. 368-380.
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Multiobjective optimization of an ultrasonic transducer using NIMBUS. / Heikkola, Erkki; Miettinen, Kaisa; Nieminen, Paavo (Corresponding Author).

In: Ultrasonics, Vol. 44, No. 4, 2006, p. 368-380.

Research output: Contribution to journalArticleScientificpeer-review

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