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首页> 外文会议>Conference on sensors and smart structures technologies for civil, mechanical, and aerospace systems >Life cycle structural health monitoring of airframe structures by strain mapping using FBG sensors
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Life cycle structural health monitoring of airframe structures by strain mapping using FBG sensors

机译：使用FBG传感器通过应变图监测机身结构的生命周期结构健康状况

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The purpose of this research is to develop the structural health monitoring system for composite airframe structures by strain mapping through their life cycles. We apply FBG sensor networks to CFRP pressure bulkheads and monitor the strain through their life cycles: molding, processing, assembly, operation and maintenance. Damages, defects and deformations which occurred in each stage are detected using the strain distribution. At first, we monitored the strain of CFRP laminates during molding and processing with FBG sensors. As a result, not only the thermal strain on curing process but also strain change due to demolding was measured precisely. In addition, we analyzed the change in strain distribution due to damages of CFRP pressure bulkhead such as stringer debonding and impact damage of skin under operational load in flight. On the basis of these results, the location of FBG sensors suitable for the detection of damages was determined.
机译：这项研究的目的是通过在整个生命周期中的应变图来开发复合材料机身结构的结构健康监测系统。我们将FBG传感器网络应用于CFRP压力舱壁，并在其生命周期内监控应变：成型，加工，组装，操作和维护。使用应变分布检测在每个阶段中发生的损坏，缺陷和变形。首先，我们使用FBG传感器监测CFRP层压板在成型和加工过程中的应变。结果，不仅精确地测量了固化过程中的热应变，而且还精确地测量了由于脱模引起的应变变化。此外，我们分析了由于CFRP压力舱壁的损坏（如桁架剥离和飞行中的工作负载下的皮肤冲击损坏）而引起的应变分布变化。根据这些结果，确定了适合检测损坏的FBG传感器的位置。

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