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Tunable characteristics of bending resonance frequency in magnetoelectric laminated composites

         

摘要

As the magnetoelectric (ME) effect in piezoelectric/magnetostrictive laminated composites is mediated by mechanical deformation,the ME effect is significantly enhanced in the vicinity of resonance frequency.The bending resonance frequency (fr) of bilayered Terfenol-D/PZT (MP) laminated composites is studied,and our analysis predicts that (i) the bending resonance frequency of an MP laminated composite can be tuned by an applied dc magnetic bias (Hdc) due to the △E effect; (ii) the bending resonance frequency of the MP laminated composite can be controlled by incorporating FeCuNbSiB layers with different thicknesses.The experimental results show that with Hdc increasing from 0Oe (1 Oe=79.5775 A/m)to 700 Oe,the bending resonance frequency can be shifted in a range of 32.68 kHz ≤ fr ≤ 33.96 kHz.In addition,with the thickness of the FeCuNbSiB layer increasing from 0 μm to 90 μm,the bending resonance frequency of the MP laminated composite gradually increases from 33.66 kHz to 39.18 kHz.This study offers a method of adjusting the strength of dc magnetic bias or the thicknesses of the FeCuNbSiB layer to tune the bending resonance frequency for ME composite,which plays a guiding role in the ME composite design for real applications.

著录项

  • 来源
    《中国物理:英文版》 |2013年第7期|511-515|共5页
  • 作者单位

    Research Center of Sensors and Instruments,College of Optoelectronic Engineering,Chongqing University,Chongqing 400044,China;

    Research Center of Sensors and Instruments,College of Optoelectronic Engineering,Chongqing University,Chongqing 400044,China;

    Research Center of Sensors and Instruments,College of Optoelectronic Engineering,Chongqing University,Chongqing 400044,China;

    Research Center of Sensors and Instruments,College of Optoelectronic Engineering,Chongqing University,Chongqing 400044,China;

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