Journal of Applied Physics
The mechanical coupling effect in a magnetoelectric (ME) composite structure in which a magnetostrictive component is bonded with a piezoelectric one is simulated by numerical technique, focusing on an optimization of the magnetoelectric coupling output. The simulation starts from an experimentally developed ME composite structure and takes into account the mechanical coupling mechanism between the two components. A numerical optimization algorithm is developed, predicting a significant enhancement of the ME output by optimizing the component dimension. This algorithm can also be used for optimum design of other ME composite structures in terms of the largest ME output. (C) 2003 American Institute of Physics.
关键词:
laminate composites
Applied Physics Letters
The bandwidth of magnetoelectric (ME) resonance for a combined structure where several Terfenol-D/epoxy-Pb(Zr,Ti)O-3 bilayers are connected in parallel and series was measured. A relationship between the bilayer length and resonance frequency was used to design the combined structure, in which the bilayered components of different lengths were connected in the parallel and series forms, respectively. The measured giant ME effect of the combined structure showed a much wider frequency response to external field than a single bilayered structure, and the ME effect far from the resonance ranges was enhanced significantly too. A qualitative analysis based on the equivalent circuit concept was presented to explain these effects. (C) 2005 American Institute of Physics.
关键词:
laminate composites
何明昌
,
黄春芳
,
郑青
,
鞠苏
,
江大志
玻璃钢/复合材料
简要介绍了碳纤维薄层预浸料及其制备的层合复合材料,主要阐述碳纤维薄层预浸料的制备方法和薄铺层复合材料的力学性能特点.对国内外关于薄铺层复合材料与常规铺层复合材料的静态、韧性和疲劳等力学性能的研究进展进行了分析和总结,归纳了铺层厚度的减薄对层合复合材料力学性能的影响规律.最后对薄铺层复合材料的研究趋势和应用前景进行了展望.
关键词:
薄层预浸料
,
面密度
,
丝束延展工艺
,
层合复合材料
,
力学性能
