Flextensional transducers with shape memory caps for tunable devices

R. J. Meyer, R. E. Newnham

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Shape memory alloys were used as caps for the 'cymbal' flextensional transducer. The active caps provide a tunable resonance frequency and a damage recovery mechanism associated with the alloy's martensitic phase transformation. These two concepts were investigated and a 25% change in resonance frequency was observed for Ni-Ti alloy caps. It was also demonstrated that complete shape recovery could be achieved after hydrostatic pressures buckled the transducer caps. Cap deformation and recovery were demonstrated with profilometer and dh measurements.

Original languageEnglish (US)
Pages (from-to)199-205
Number of pages7
JournalJournal of Intelligent Material Systems and Structures
Issue number3
StatePublished - Mar 2000

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanical Engineering


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