Measurement of electrical discharge machining oil quality by analyzing variations in the equivalent relative permittivity of the capacitive sensor

Shih Jui Chen; Yi Li Chen; Yu Jui Chang; Dong Lin Chuang; Yi Chun Chen; Hai Ping Tsui; Yean Ren Hwang

doi:10.3390/s20216248

Measurement of electrical discharge machining oil quality by analyzing variations in the equivalent relative permittivity of the capacitive sensor

Shih Jui Chen, Yi Li Chen, Yu Jui Chang, Dong Lin Chuang, Yi Chun Chen, Hai Ping Tsui, Yean Ren Hwang

Research output: Contribution to journal › Letter › peer-review

10 Scopus citations

Abstract

In this study, a concentration monitoring system was successfully developed. A sensor was immersed in electrical discharge machining oil, and the capacitance of the sensor changed as a function of the impurity concentration. Thus, DC voltage variations were produced via a conversion circuit. Carbon black and iron particles with different concentrations were successfully characterized. The capacitance increments were positively correlated with the particle concentration. The linear fitting results based on the impurity concentration were used to express the degree of influence of particles with different weight percentage concentrations on the increase in the overall capacitance value. An equivalent medium theory model was then developed according to the electrical characteristics of the impurities to predict different particle volume percentages.

Original language	English
Article number	6248
Pages (from-to)	1-11
Number of pages	11
Journal	Sensors (Switzerland)
Volume	20
Issue number	21
DOIs	https://doi.org/10.3390/s20216248
State	Published - 1 Nov 2020

Keywords

Capacitive sensors
Electrical discharge machining oil
Equivalent relative permittivity

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10.3390/s20216248

Development of a Hybrid Micro-Generator for Harvesting Rotation Energy Ii
Chen, S.-J. (PI)
1/08/19 → 31/10/20
Project: Research
Development of Hybrid Electrical Machining Technologies and Their Intelligent Integration for a Productivity 4.0-Based High- Precision Mold Manufacturing System(II)( I )
Yan, B.-H. (PI)
1/03/17 → 30/04/18
Project: Research

Cite this

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title = "Measurement of electrical discharge machining oil quality by analyzing variations in the equivalent relative permittivity of the capacitive sensor",

abstract = "In this study, a concentration monitoring system was successfully developed. A sensor was immersed in electrical discharge machining oil, and the capacitance of the sensor changed as a function of the impurity concentration. Thus, DC voltage variations were produced via a conversion circuit. Carbon black and iron particles with different concentrations were successfully characterized. The capacitance increments were positively correlated with the particle concentration. The linear fitting results based on the impurity concentration were used to express the degree of influence of particles with different weight percentage concentrations on the increase in the overall capacitance value. An equivalent medium theory model was then developed according to the electrical characteristics of the impurities to predict different particle volume percentages.",

keywords = "Capacitive sensors, Electrical discharge machining oil, Equivalent relative permittivity",

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AU - Chen, Shih Jui

AU - Chen, Yi Li

AU - Chang, Yu Jui

AU - Chuang, Dong Lin

AU - Chen, Yi Chun

AU - Tsui, Hai Ping

AU - Hwang, Yean Ren

PY - 2020/11/1

Y1 - 2020/11/1

N2 - In this study, a concentration monitoring system was successfully developed. A sensor was immersed in electrical discharge machining oil, and the capacitance of the sensor changed as a function of the impurity concentration. Thus, DC voltage variations were produced via a conversion circuit. Carbon black and iron particles with different concentrations were successfully characterized. The capacitance increments were positively correlated with the particle concentration. The linear fitting results based on the impurity concentration were used to express the degree of influence of particles with different weight percentage concentrations on the increase in the overall capacitance value. An equivalent medium theory model was then developed according to the electrical characteristics of the impurities to predict different particle volume percentages.

AB - In this study, a concentration monitoring system was successfully developed. A sensor was immersed in electrical discharge machining oil, and the capacitance of the sensor changed as a function of the impurity concentration. Thus, DC voltage variations were produced via a conversion circuit. Carbon black and iron particles with different concentrations were successfully characterized. The capacitance increments were positively correlated with the particle concentration. The linear fitting results based on the impurity concentration were used to express the degree of influence of particles with different weight percentage concentrations on the increase in the overall capacitance value. An equivalent medium theory model was then developed according to the electrical characteristics of the impurities to predict different particle volume percentages.

KW - Capacitive sensors

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KW - Equivalent relative permittivity

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Measurement of electrical discharge machining oil quality by analyzing variations in the equivalent relative permittivity of the capacitive sensor

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Keywords

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Projects

Development of a Hybrid Micro-Generator for Harvesting Rotation Energy Ii

Development of Hybrid Electrical Machining Technologies and Their Intelligent Integration for a Productivity 4.0-Based High- Precision Mold Manufacturing System(II)( I )

Cite this