EMAT の磁性体内における超音波発生メカニズムのシミュレーション
英字タイトル:
Simulation on mechanism of ultrasonic test signals in magnetic materialsusing EMAT
著者:
伊藤 崇文 Takafumi ITO 小島 史男 Fumio KOJIMA
発刊日:
公開日:
Condition MonitoringMagnetostrictive ForceNondestructive InspectionNonlinear Magnetic Field 1
Simulation on mechanism of ultrasonic test signals in magnetic materialsusing EMAT
著者:
伊藤 崇文 Takafumi ITO 小島 史男 Fumio KOJIMA
発刊日:
公開日:
カテゴリ: 第9回
キーワードタグ:Condition MonitoringMagnetostrictive ForceNondestructive InspectionNonlinear Magnetic Field 1
概要
This paper is concerned with mechanism of ultrasonic test signals in magnetic materials using electromagnetic acoustic transducer(EMAT). The co upling mechanism between the electromagnetic fields and the applied excitation of ultrasonic testing are investigated. First, a nonlinear magnetic mod el in two dimensions is presented for the coupling mechanism. Secondly, the coupling mechanisms in ferromagnetic materials are studied analytically an d numerically. The final part of this monograph is devoted to numerical experiments in order to demonstrate the feasibility of the proposed simulator.
