日志

分享 压电材料机械强度测试

piezolee 2007-6-21 16:04

陶瓷材料的机械拉伸强度测量比较困难，因此可以考虑用共振法。压电测量〉一书介绍了一种基于共振的方法。但高频工作状态下，损耗大，陶瓷易发热，操作困难。所以可以考虑用低频的弯曲模。只要测出陶瓷的位移或速度，即可根据相应的公式算出强度。

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分享 history of piezoelectrics

piezolee 2007-6-6 09:44

The phenomenon that electricity could be produced in some crystals by subjecting them to mechanical pressures was suggested by Charles Coulomb in 1825. This was further verified by the research efforts of Jacques and Pierre Curie in 1880 at the University of Paris , where they studi ...

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