Abstract : the therortical calculation of the bending stress of the root and experimental stress analysis on the modified profile and the standard involute tooth profile were made with the finite element method and the electric resistance strain film method . this indicated that the modified profile was supe rior to the standard involute profiles in terms of the bending strength 文摘:分别用有限元和电阻应变片法对修形齿形和渐开线齿形进行齿根弯曲应力计算与实验应力分析.结果证明在弯曲强度方面修形齿形比标准渐开线齿形更优越
At last , we introduced the design of demodulation device of white - light interferometer modulation / demodulation fiber - optic fabry - perot sensor . we provide the ways to improve the property of sensor . we performed a experiment to test the capability of our sensor to strain gauge , and applied our sensor into study on carbon fiber material temperature property 最后讨论了白光干涉型光纤fp传感器信号解调装置的设计，提出了改进该种传感器性能的方法，并对该传感器系统与电阻应变片作了对比实验，将该种传感器用于了碳纤维材料的温度性能实验中。
Experimental result shows that electrical - resistance strain gages can respond well in the frequency range of artificial excitation by impact hammer , at the same time , the experimental scheme brought forward in this paper makes the experimental setting simple and can be manipulated easily as well as can display the excitation and response expediently and synchronously on digital oscillograph . the impact hammer can implement half - sine load 结果表明，电阻应变片在力锤激励频段内可以有很好的响应，从而使实验装置简单，方便操作和使用；同时实验结果显示出本文采用的实验方案可以方便地将激励和响应同步地显示在示波器上，并且利用力锤可以实现规则的半正弦加载。
