Journal
SENSORS
Volume 21, Issue 22, Pages -Publisher
MDPI
DOI: 10.3390/s21227556
Keywords
inductive debris sensor; online debris monitoring; metal debris
Funding
- National Natural Science Foundation of China [12061131013]
- State Key Laboratory of Mechanics and Control of Mechanical Structures at NUAA [MCMS-E-0520K02]
- Opening Project of Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province [SZDKF-202002]
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Lubricants are crucial for mechanical processing and the detection of debris particles can provide important information for wear degree and fault prediction. The proposed inductive debris sensor structure has high sensitivity and can effectively detect different sizes of metal debris.
Lubricants are of key importance for mechanical processing, and exist in nearly every mechanical system. When the equipment is in operation, debris particles will be generated in mechanical lubricants. The detection of debris particles can indicate the wear degree of machinery components, and provide prognosis warning for the system before the fault occurs. In this work, a novel type of inductive debris sensor consisting of two excitation coils and two sensing coils is proposed for online debris monitoring. The developed sensor was proven to be of high sensitivity through experimental verification. The testing results show that, using the designed sensor, ferrous metal debris with a size of 115 mu m and nonferrous metal debris with a size of 313 mu m in a pipe with an inner diameter of 12.7 mm can be effectively detected. Moreover, the proposed inductive debris sensor structure has better sensitivity at higher throughput and its design provides a useful insight into the development of high-quality sensors with superior performances.
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