Analysis of Precision Surface Grinding Using a Self-Assembled Dual-Optical-Fiber Real-Time Measurement System
Yu-Ting Lyu a, Ching-Yuan Chang a, Che-Wei Tu b, Chien-Ching Ma b, Yu-Chun Huang c, Herchang Ay a, Yu-Fu Lin d, Zheng-Han Hong d and Po-Han Tseng e
aDepartment of Mold and Die Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
bDepartment of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
cDepartment of Electrical Engineering, Southern Taiwan University of Science and Technology, Tainan, Taiwan
dMetal Industries Research and Development Centre (MIRDC), Kaohsiung, Taiwan
eDepartment of Mechanical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan
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Abstract:
This study applied a dual-optical-fiber real-time measurement system to precision surface grinding of FC-300 gray cast iron, focusing on internal strain and temperature variations. The system uses attached and free fibers to measure force- and heat-induced strains, respectively, with decoupling achieved through wavelength shift theory. In 14 grinding trials, the maximum temperature-induced strain reached 500 με for workpiece A-2 and 1200 με for workpiece B-2, while force-induced compressive strains peaked at -400 με and -615.63 με, respectively. These findings demonstrate the system's accuracy in capturing real-time strain variations, optimizing machining processes, and its potential for industrial applications.
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