本文主要是对用电磁声换能器，通过测量超声波幅度变化来测量铁磁性材料内部应力的方法进行实验研究。
The stress in ferromagnetic materials was studied by measuring the change of the amplitude of ultrasonic wave with electromagnetic acoustic transducers.
超磁致伸缩换能器是利用超磁致伸缩材料将电磁能转化为机械振动的一种机械装置。
The giant magnetostrictive transducer, using a giant magnetostrictive material as a main element, can transform electromagnetic energy into mechanical energy.
电磁超声换能器(EMAT)是一种通过电磁耦合方法产生和接收超声波的换能器。
An electromagnetic acoustic transducer (EMAT) can produce and receive ultrasonic waves though electromagnetic coupling.
给出超磁致伸缩换能器驱动磁场均匀性概念后，论述了超磁致伸缩换能器驱动磁场宜用电磁感应强度表示。
The concept of magnetic field uniformity is introduced. And the magnetic field intensity of super-magnetostrictive transducer can be used to denote relevant magnetic induction strength is discussed.
给出超磁致伸缩换能器驱动磁场均匀性概念后，论述了超磁致伸缩换能器驱动磁场宜用电磁感应强度表示。
The concept of magnetic field uniformity is introduced. And the magnetic field intensity of super-magnetostrictive transducer can be used to denote relevant magnetic induction strength is discussed.
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