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Fiber Optic Bend Sensor for In-Process Monitoring of Polymeric Composites |
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| Authors: | W. P. Wang T. H. Hwang E. Y. Shu M. H. Vartanian R. A. Ridilla |
| Affiliation: | (1) Manufacturing Technology Laboratory, Corporate Research and Development Center, General Electric Company, 12301 Schenectady, NY, USA;(2) Industrial Electornics Laboratory, Corporate Research and Development Center, General Electric Company, 12301 Schenectady, NY, USA;(3) GE Aircraft Engines, 45214 Cincinnati, OH, USA;(4) Present address: GE-CRD, KWD-249, 12301 Schenectady, NY, USA |
| Abstract: | Wrinkles, porosity, delaminations and other defects introduced during the manufacturing processing can compromise mechanical performance of advanced composites. This paper describes a method of using fiber optic sensors for monitoring the formation of graphite fiber bending in real time during manufacturing process. Theoretical formulation of the sensor behavior and experimental results are presented. The response of the sensor to composite fiber bending is characterized. The application to analyzing the formation of wrinkles in compression molding of graphite/epoxy composites is demonstrated. |
| Keywords: | fiber optic monitoring wrinkle polymeric composites bend sensor molding on-line quality assurance |
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