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 num...
英字タイトル:
Simulation on mechanism of ultrasonic test signals in magnetic materialsusing EMAT