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GUIDED WAVE-BASED SYSTEM FOR CURE MONITORING OF COMPOSITES USING PIEZOELECTRIC DISCS AND FIBER BRAGG GRATINGS/PHASE-SHIFTED BRAGG GRATINGS
GUIDED WAVE-BASED SYSTEM FOR CURE MONITORING OF COMPOSITES USING PIEZOELECTRIC DISCS AND FIBER BRAGG GRATINGS/PHASE-SHIFTED BRAGG GRATINGS
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机译:基于引导波的压电圆盘和光纤布拉格光栅/相移布拉格光栅的复合材料固化监测系统
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摘要
System and method for in-process cure monitoring of a material utilizes one or more sensors such as fiber Bragg gratings (FBGs) or phase-shifted FBGs (PS-FBGs) and at least one optical line fiber connected to the sensor(s). The sensor(s) and the optical line may be embedded in the material prior to curing the material may comprise a fiber reinforced polymer. Waves are excited into the material during curing thereof to form guided waves that propagate through the material. At least one wave metric of the guided waves is measured utilizing the sensor(s).
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