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公开(公告)号:US20200061874A1
公开(公告)日:2020-02-27
申请号:US16109313
申请日:2018-08-22
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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公开(公告)号:US11590676B2
公开(公告)日:2023-02-28
申请号:US16109313
申请日:2018-08-22
IPC分类号: B29C35/02 , G01D5/353 , B29K105/08 , B29K101/10 , B29K307/04
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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