...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optics and Lasers in Engineering >Determination of engineering strain distribution in a rotor blade with fibre Bragg grating array and a rotary optic coupler
【24h】

Determination of engineering strain distribution in a rotor blade with fibre Bragg grating array and a rotary optic coupler

机译：用光纤布拉格光栅阵列和旋转光学耦合器确定转子叶片中的工程应变分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Structural damage occurs in materials subjected to repeated or fluctuating stresses that must be minimized by design to increase fatigue life, and strains distributed in a blade need to be experimentally determined for evaluating stress levels. In order to measure local strains in a rotating blade, efficient signal transmission between a sensor installed on a blade and a stationary interrogator is significantly important. In this paper a strain-independent fibre Bragg grating (FBG) sensor and a rotary optic coupler were used as means of compensating light intensity loss change arising from blade rotation. Working principles of a FBG sensor and a rotary optic coupler were detailed, and procedures for measuring local strains were also described. Eventually, strain distributions were obtained in terms of mean strain and strain amplitude. Measured strains were then directly compared with analytical ones. Experimental procedures and results offer an improved insight into a strain measurement technique for a rotating mechanical system.
机译：结构损坏发生在承受反复或波动应力的材料中，必须通过设计使其最小化以延长疲劳寿命，并且需要通过实验确定叶片中分布的应变以评估应力水平。为了测量旋转叶片中的局部应变，安装在叶片上的传感器与固定询问器之间的有效信号传输非常重要。在本文中，使用应变无关的光纤布拉格光栅（FBG）传感器和旋转式光耦合器作为补偿由于叶片旋转而引起的光强度损失变化的方法。详细介绍了FBG传感器和旋转光学耦合器的工作原理，并介绍了测量局部应变的步骤。最终，根据平均应变和应变幅度获得了应变分布。然后将测得的菌株直接与分析菌株进行比较。实验程序和结果为旋转机械系统的应变测量技术提供了更好的了解。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号