Multipoint Temperature Monitoring Based on a Regenerated Fiber Bragg Grating Temperature Sensor Array in Copper Casting

被引:3
作者
Bian, Qiang [1 ,2 ]
Bauer, Constantin [3 ]
Stadler, Andrea [1 ]
Jakobi, Martin [2 ]
Koch, Alexander W. [2 ]
Roths, Johannes [1 ]
机构
[1] Munich Univ Appl Sci, Photon Lab, Lothstr 34, D-80335 Munich, Germany
[2] Tech Univ Munich, Inst Measurement Syst & Sensor Technol, Theresienstr 90, D-80333 Munich, Germany
[3] Tech Univ Munich, Met Forming & Casting, Walther Meissner Str 4, D-85748 Garching, Germany
来源
SENSORS AND SMART STRUCTURES TECHNOLOGIES FOR CIVIL, MECHANICAL, AND AEROSPACE SYSTEMS 2021 | 2021年 / 11591卷
关键词
Casting; regenerated fiber Bragg grating; high-temperature sensing; ALUMINUM; SOLIDIFICATION;
D O I
10.1117/12.2588600
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The temperature distribution during a metal casting process is important because it influences structural properties and residual stresses of the casted part. In this paper, we report on multipoint temperature monitoring based on a regenerated fiber Bragg grating (RFBG) array during a copper casting process, with a maximum temperature exceeding 1100 degrees C. A temperature calibration function up to 800 degrees C was obtained experimentally and was linearly extended to 1200 degrees C. According to the experimental results, the temperature information from an RFBG temperature sensor agreed well with that from a thermocouple that was located close to the respective RFBG sensor element, even at temperatures above 1100 degrees C. With the RFBG temperature sensor array in a single fiber, the temperature distribution and its temporal development were obtained, which can be used to better understand the copper casting process and improve the casting mold design.
引用
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页数:6
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