期刊
MATERIALS
卷 13, 期 13, 页码 -出版社
MDPI
DOI: 10.3390/ma13132920
关键词
milling; workpiece; direct printing; vibration; sensor
类别
资金
- National Research Foundation of Korea (NRF) - MSIT [NRF-2018R1A2A1A13078704, NRF-2020R1A2C4001731]
- Basic Research Lab Program through the National Research Foundation (NRF) - MSIT [NRF-2018R1A4A1059976]
- Institute of Engineering Research at Seoul National University
A real-time, accurate, and reliable process monitoring is a basic and crucial enabler of intelligent manufacturing operation and digital twin applications. In this study, we represent a novel vibration measurement method for workpiece during the milling process using a low-cost nanoparticle vibration sensor. We directly printed the vibration sensor based on silver nanoparticles positioned onto a polyimide substrate using an aerodynamically-focused nanomaterials printing system, which is a direct printing technique for inorganic nanomaterials positioned onto a flexible substrate. Since it does not require any post-process such as chemical etching and heat treatment, a highly sensitive vibration sensor composed of a microscale porous structure was fabricated at a cost of several cents each. Furthermore, accurate and reliable vibration data was obtained by simple and direct attachment to a workpiece. In this study, we discussed the performance of vibration measurement of a fabricated sensor in comparison to a commercial vibration sensor. Using frequency and power spectrum analysis of obtained data, we directly measured the vibration of workpiece during the milling process, according to a process parameter. Lastly, we applied a fabricated sensor for the digital twins of turbine blade manufacturing in which vibration greatly affects the quality of the product to predict the process defects in real-time.
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