磁性材料に関する電磁超音波探触子を用いた.. 超音波送信機構の解析..
英字タイトル:
Analysis of Ultrasonic Source in Magnetic Materials Using Electromagnetic Acoustic Transducer
著者:
中島 大岳 Hirotaka NAKAJIMA 古澤 彰憲 Akinori FURUSAWA 小島 史男 Fumio KOJIMA
発刊日:
公開日:
Condition MonitoringEMATFDTD MethodFEM MethodMagnetostrictive Force
Analysis of Ultrasonic Source in Magnetic Materials Using Electromagnetic Acoustic Transducer
著者:
中島 大岳 Hirotaka NAKAJIMA 古澤 彰憲 Akinori FURUSAWA 小島 史男 Fumio KOJIMA
発刊日:
公開日:
カテゴリ: 第12回
キーワードタグ:Condition MonitoringEMATFDTD MethodFEM MethodMagnetostrictive Force
概要
The aim of this work presented here is to analyze the mechanism of ultrasonic test signals in magnetic materials using electromagnetic acoustic transducer (EMAT). The coupling mechanism for EMAT between the electromagnetic fields and the applied excitation of ultrasonic wave are investigated. First, a nonlinear magnetic model in two dimensions is presented for the coupling mechanism. Secondly, the coupling mechanisms in ferromagnetic materials are studied analytically and numerically. Finally, the numerical simulation result is shown and discussed in order to demonstrate the feasibility of our proposed method.
