巨磁致伸缩材料磁机械耦合系数的测量  

Measurement of Magnetomechanical Coupling Coefficient for Giant Magnetostrictive Materials

作　　者：王博文[1] 张智祥[1] 翁玲[1] 李养贤[1] 

机构地区：[1]河北工业大学电气学院,天津300130

出　　处：《河北工业大学学报》2002年第4期1-4,共4页Journal of Hebei University of Technology

基　　金：河北省重点科技攻关项目(01213531D)

摘　　要：根据磁机械耦合系数的测量原理,利用锁相放大器建立了磁机械耦合系数测量系统,并应用该系统测量了巨磁致伸缩材料的磁机械耦合系数.测试结果表明,采用锁相放大器技术所测得的磁机械耦合系数是准确可靠的.The measurement system of magnetomechanical coupling coefficient for giant magnetostrictive materials has been built by using a lock-in amplifier, according to the measurement theory. The magnetomechanical coupling coefficient has been measured in the system and it has been shown that the measurement valu-e of the magnetomechanical coupling coefficient is accurate and reliable.

关 键 词：磁机械 耦合系数 巨磁致伸缩材料 锁相放大器 测量原理 测量系统 

分 类 号：TM274[一般工业技术—材料科学与工程]