層状基板における漏洩ラム波の伝搬特性とすだれ状トランスデューサの動作特性 Propagation Characteristics of Leaky Lamb Waves in Layered Substrate and Operation Performances of Interdigital Transducer

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Propagation characteristics of seven lowest modes of leaky Lamb waves in a layered substrate composedof a piezoelectric ceramic plate and an acrylic plate, under the condition of a liquid-solid boundaryat the acrylic plate side, are described in the relationshipwith operation performances of an interdigital transducer (IDT) for underwater ultrasound. The IDT operates effectively for radiating or detecting via a mode conversionfrom the leaky Lamb wave to a longitudinal wave in a liquid. The incorporation of a layered substrate is useful for multiple-modes operations with higher transducer efficiencies, while retaining sufficient mechanical strength. It is noticeable that the cross points of the velocity curves of the leaky Lamb wave modes and the longitudinal wave modes in two kinds of thin plates for the layered substrate are unique for the transducer operations. The transducer operations are examined in the construction of a liquid delay line. The transducers designed for operating on the cross points of three modes are well explained in comparisonbetween the calculated and experimental results.

収録刊行物

  • 電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society

    電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society 124(8), 733-740, 2004-08-01

    一般社団法人 電気学会

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各種コード

  • NII論文ID(NAID)
    10013325801
  • NII書誌ID(NCID)
    AN10136312
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03854205
  • NDL 記事登録ID
    7051871
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-793
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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