利用FBG传感器测试高温合金和陶瓷基复合材料的应变
Strain measurement of superalloy and ceramic matrix composites by using FBG sensor
姜亚军 1程丽琴 2刘小冲 3赵菲 1贺正泽 1尹剑波1
作者信息
- 1. 西北工业大学 物理科学与技术学院,陕西 西安 710000
- 2. 西安高新科技职业学院,陕西 西安 710109
- 3. 西北工业大学材料学院,陕西 西安 710000
- 折叠
摘要
利用光纤布拉格光栅(FBG)应变传感器测量了高温合金和陶瓷基复合材料的应变特性,并与电阻应变片的测量结果进行了对比分析.将 FBG应变传感器与电阻应变片分别粘贴在高温合金和陶瓷基复合材料试件的正、反面上,利用力学试验机对 2 种试件施加载荷,分别利用 FBG解调仪和应变测试仪对 FBG应变传感器和电阻应变片的信号进行实时解调.研究得出:FBG应变传感器与电阻应变片在一定的应变范围内,测量结果符合较好.因此,FBG应变传感器可代替电阻应变片,实现对材料的应变测量.
Abstract
The strain characteristics of superalloy and ceramic matrix composites were measured by fiber Bragg grating(FBG)strain sensor,and the measurement results were compared with those measured by resistance strain gauge.FBG strain sensor and the resistance strain gauge were respec-tively pasted on the positive and negative sides of the superalloy and ceramic matrix composite speci-mens.The mechanical testing machine was used to apply given load to the two specimens,and the signals of FBG strain sensor and the resistance strain gauge were demodulated in real time by FBG in-terrogator and the strain recorder respectively.The results showed that FBG strain sensor and the re-sistance strain gauge were almost consistent within a certain range of strain.Therefore,FBG strain sensor could be used to measure the strain of materials by replacing the resistance strain gauge.
关键词
应变/FBG/电阻应变片/高温合金/陶瓷基复合材料Key words
strain/fiber Bragg grating/resistance strain gauge/superalloy/ceramic matrix com-posites引用本文复制引用
基金项目
教育部产学合作协同育人项目(230702116275252)
西北工业大学教育教学改革研究项目(2024JGY42)
大学生创新创业训练计划项目(202210699075)
出版年
2024
NETL
NSTL
万方数据