Multisource excitations in a stratified biphase structure

Wenwu Cao, Wenkang Qi

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


A stratified biphase structure can have many mechanical resonance modes due to the existence of several length scales in the system. The resonance effect is greatly enhanced if there are periodic synchronized multiple driving sources in the structure. For example, a single beam or a linear array composite transducers used in medical ultrasonic imaging. Such resonance behavior can be studied using an extended transfer matrix technique which we name: multisource T-matrix technique. Using this technique we have studied the effects of randomization in a 2-2 composite. It is found that for dispersing the pitch resonance the randomization of ceramic spacing is more effective for low ceramic content, while randomization of ceramic width is more effective for high ceramic content.

Original languageEnglish (US)
Pages (from-to)4640-4646
Number of pages7
JournalJournal of Applied Physics
Issue number7
StatePublished - 1995

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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