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In recent years, the complex network has gradually become a matter of concern areas of research. More and more researchers joining and the new field constantly opening up, the community structure segmentation become more and more important. In this paper, the associations of the algorithms and the method of evaluation criteria is discussed on the complex networks. Objecting to the map without the...
Lead-free piezoelectric (K0.44Na0.52Li0.04)(Nb0.9-xTa0.1Sbx)O3 ceramics were prepared by traditional electrical ceramic technique. The effects of different Sb doping on the microstructure, phase, dielectric and piezoelectric properties were studied. The results indicate that the multielement niobate ceramics with higher piezoelectric properties can be fabricated from different Sb doping of Sb3+ or...
Piezoelectric materials are the main functional materials for sensors and actuators in smart structures. In this paper, two new types of piezoelectric devices, functionally graded (FG) piezoelectric bending actuators and piezoelectric fibers with metal core, and their applications in smart structures are introduced. A new process to fabricate piezoelectric ceramic fibers of 150 mum to 250 mum in diameter...
BaTiO3 (BT) powders were synthesized by hydrothermal method for fabricating lead-free barium titanate piezoelectric ceramics. The effect of the two washing methods (distilled water and acetic acid solutions) on the piezoelectric properties of the BT ceramics was studied. BT ceramics with the higher piezoelectric properties (d33 value is over 190 pC/N) was obtained from the powders washed by acetic...
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