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首页> 外文会议>International workshop on structural health monitoring >Development of SHM System using Multiple FBG Sensors for Solid Rocket Motor Composite Chamber
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Development of SHM System using Multiple FBG Sensors for Solid Rocket Motor Composite Chamber

机译：使用多个FBG传感器的固体火箭发动机复合腔室SHM系统的开发

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A structural health monitoring system using four fiber Bragg grating sensors(FBG sensors) was developed for solid rocket motor composite chambers. Thesystem was designed to measure a large and fast strain change and to measureacoustic emissions (AE) simultaneously. The strain up to 1% and up to 100 kHzwas considered. The system possesses two light sources; a newly developed fourbandfiber ring laser and a broadband light source. Using the four-band fiber ringlaser, the system can measure strain changes and AE simultaneously. Using thebroadband light source, the system can measure high-speed strain changes. Thestrain sensitivities of FBG sensors obtained from the four-band fiber ring lasersystem agreed well with those obtained from a broadband light source system. ACFRP beam-bending test was conducted to confirm the possibility of simultaneousmeasurement of both strain and AE signals from a single FBG sensor. A strain gageand a piezoelectric AE sensor were used for reference. In the test, it was confirmedthe strain change up to almost 1% was measured from the developed system. AEdetection by an FBG sensor and a piezoelectric AE sensor, however, do have slightdifferences. The developed system will be applied to composite structures inaerospace engineering fields, such as Epsilon Launch Vehicle, which is underdevelopment by the Japan Aerospace Exploration Agency (JAXA).
机译：使用四个光纤布拉格光栅传感器的结构健康监测系统 （FBG传感器）是为固体火箭发动机复合舱开发的。这 该系统旨在测量大而快速的应变变化并测量 声发射（AE）同时进行。应变高达1％且高达100 kHz 被考虑。该系统具有两个光源。新开发的四频 光纤环形激光器和宽带光源。使用四频光纤环 激光，该系统可以同时测量应变变化和声发射。使用 宽带光源，该系统可以测量高速应变的变化。这 四波段光纤环形激光器获得的FBG传感器的应变敏感性 该系统与从宽带光源系统获得的数据非常吻合。一种 进行CFRP弯曲试验以确认同时进行的可能性 单个FBG传感器可同时测量应变和AE信号。应变计 压电AE传感器作为参考。在测试中，已经确认 从开发的系统测得的应变变化高达近1％。声发射 但是，通过FBG传感器和压电AE传感器进行的检测确实有些微 差异。所开发的系统将应用于复合材料结构中 航空工程领域，例如Epsilon运载火箭 由日本航空航天局（JAXA）进行的开发。

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