研究目的
Investigating the use of distributed optical fiber sensing based on optical frequency-domain reflectometry for monitoring the two-dimensional temperature profile during drilling of carbon fiber reinforced polymer (CFRP) composites.
研究成果
The OFDR-based distributed fiber sensor effectively monitors the 2D temperature profile during drilling of CFRP plates, providing mm-scale spatial resolution and a sampling rate of tens of Hz. This technique can detect areas reaching dangerous high temperatures, offering potential for optimizing cutting parameters to avoid material damage.
研究不足
The study is limited by the spatial resolution and sampling rate of the OFDR system, which may not capture all temperature variations during drilling. Additionally, the method requires physical placement of sensing fibers on the CFRP plate, which may not be feasible in all industrial applications.
1：Experimental Design and Method Selection:
The study employs distributed optical fiber sensing based on optical frequency-domain reflectometry (OFDR) with a spatial resolution of
2：64 mm and a dynamic sampling rate of 8 Hz to monitor the temperature evolution of CFRP panels during drilling. Sample Selection and Data Sources:
A
3：9 m-long standard single-mode fiber is used as a sensing fiber, placed inside capillarity tubes glued on top of a CFRP plate. List of Experimental Equipment and Materials:
The drill bit used is a diamond bit with 5 mm diameter (Sandvik-
4：1). Experimental Procedures and Operational Workflow:
8 The optical fiber and capillarity tubes are arranged in a specific configuration to cover a monitoring area of 100×18 mm around the borehole.
5：Data Analysis Methods:
The temperature profile is reconstructed using OFDR measurements, with data interpolation for areas not covered by the sensing fiber.
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