Numerical Method of Power Loss in Distributed Optic-fiber Crack Detection

chenjiang; 刘浩吾

您当前的位置：

首页 >

文章列表页 >

Numerical Method of Power Loss in Distributed Optic-fiber Crack Detection

更新时间：2023-11-28

- Numerical Method of Power Loss in Distributed Optic-fiber Crack Detection
- Advanced Engineering Sciences Vol. 41, Issue 4, Pages: 37-41(2009)
- 作者机构：
  
  1. 四川大学水利水电学院
  2. 四川大学水电学院四川,成都,610065
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009，
  
  Published Online：22 December 2008，
扫描看全文
陈江,刘浩吾.分布式光纤裂缝检测中损耗的数值计算方法[J].工程科学与技术,2009,41(4):37-41.

chenjiang, 刘浩吾. Numerical Method of Power Loss in Distributed Optic-fiber Crack Detection. [J]. Advanced Engineering Sciences 41(4):37-41(2009)
陈江,刘浩吾.分布式光纤裂缝检测中损耗的数值计算方法[J].工程科学与技术,2009,41(4):37-41. DOI：

chenjiang, 刘浩吾. Numerical Method of Power Loss in Distributed Optic-fiber Crack Detection. [J]. Advanced Engineering Sciences 41(4):37-41(2009) DOI：

摘要

中文摘要: 在分布式光纤裂缝检测技术中，为了从理论上确定功率损耗与裂缝宽度的关系，本文采用修正曲率半径的方法对经典的弯曲损耗理论模型进行了修正，扩展了经典模型的适用范围，完善了分布式光纤裂缝检测技术的力-光耦合理论。对两种光纤、两种夹角共四个工况分别进行了数值试验和模型试验，结果表明：光纤护套越薄、与缝面夹角越小，灵敏度越高；数值试验结果与模型试验结果符合较好，说明该修正理论模型是有效性，可为发展分布式光纤裂缝检测技术提供适用的理论工具。

Abstract

Abstract:To determine the relationship between power loss and crack width theoretically in distributed optic-fiber crack detection technology. The classical theoretical model of bend loss was modified by correcting curvature radius in this paper. The application range of classical theoretical model was extended and mechanics-optics coupling theory of distributed optic-fiber crack detection technology was completed. Numerical experiments and model experiments were carried out for 4 cases which involve two fiber types and two angles between fiber and crack. The results show that the thinner the fiber sheath and the smaller the angle between fiber and crack

the higher the sensitivity is. The numerical results are consistent well with experimental results

demonstrating that this modified model is effective and can be used as a theoretical tool for developing the distributed optic-fiber crack detection technology.

关键词

光纤传感裂缝检测弯曲损耗力-光耦合

Keywords

optic-fiber sensingcrack detectionbend lossmechanics-optics coupling

references

更多指标>

Views

224

下载量

CNKI被引量

Alert me when the article has been cited

提交

Tools

Publicity Resources

Crack Monitoring Method for Wading Concrete Engineering Based on Thermal Effects

Related Author

No data

Related Institution

Failure Mechanics and Eng. Disaster Prevention Key Lab.of Sichuan Province, Sichuan Univ.

Lab. of Deep Earth Sciences and Eng. (Sichuan Univ.), MOE, Chengdu

College of Architecture & Environment,Sichuan Univ.

⁰