Open AccessAnalysis of magneto-mechano-electronic coupling factors in magnetostrictive/piezoelectric laminated composite
Author(s) -
Liujiao Bian,
Yumei Wen,
Ping Li
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.4205
Subject(s) - magnetostriction , materials science , electromechanical coupling coefficient , piezoelectricity , coupling (piping) , composite number , composite material , coupling coefficient of resonators , voltage , magnetic field , optoelectronics , electrical engineering , physics , quantum mechanics , resonator , engineering
The magneto-mechanical coupling factor, electromechanical coupling factor, and magnetoelectric ME coupling factor of magnetostrictive/piezoelectric laminated composite, which are related to the geometric dimensions and the performance parameter of the magnetostrictive and piezoelectric materials, are analysed and derived. It is also demonstrated that the ME voltage coefficient at low frequency is directly proportional to the ME coupling factor while the ME voltage coefficient at resonance is directly proportional to the product of the ME coupling factor and the effective mechanical quality factor of the composite. In addition, the ME voltage coefficient is related to the intrinsic impedance of the composite. Multiple composites of distinct magnetostrictive materials Terfenol-D, FeNi-based-alloy and piezoelectric materials PZT5-H, PZT8 are further analysed to demonstrate the theoretical analysis. The Terfenol-D/PZT5-H and FeNi-based-alloy/PZT8 laminated composites are fabricated and investigated, and the analysis gives better explanations to the experimental results.