Abstract
Ball-bearing-like specimens with two groove factors (GFs) are prepared to investigate surface roughness (Ra) effects on tribological parameters and vibrations. The self-adaptive decomposition (SAD) and the intrinsic mode function (IMF) are used to evaluate the multi-scale entropy (MSE). Define entropy tolerance (ET) as the difference in maximum and minimum MSE values. ET variations for the grove-like vibrations created at various IMFs are obtained. Average friction coefficients (μ¯) and wear losses (WL) are evaluated. (μ¯)outer ≪ (μ¯)inner ≪ (μ¯)spacer are the controlling factors for average vibration (AV). Increasing the ball-spacer gap (GD) and lowering GF can reduce AV. Smaller AV, AET, and (WL)spacer results are obtained from relatively smaller (μ¯)spacer. The developments of IMF and MSF provide a novel and efficient way to identify bearing's contact components governing the vibrations and tribological parameters of the tribo tests, and further establish the correlations for the result of AV, AET, μ¯, and (WL)spacer.
| Original language | English |
|---|---|
| Article number | 107021 |
| Journal | Measurement: Journal of the International Measurement Confederation |
| Volume | 150 |
| DOIs | |
| Publication status | Published - 2020 Jan |
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All Science Journal Classification (ASJC) codes
- Instrumentation
- Electrical and Electronic Engineering
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Uses of empirical mode decomposition and multi-entropy techniques to establish the correlations among vibrations, friction coefficients and component wear of ball-bearing-like specimens. / Han, Chang Fu; Wu, Cheng Chun; Chu, Hsiao Yeh; Tsai, Ping Hsueh; Horng, Jeng Haur; Wei, Chin Chung; Hwang, Yih Chyun; Lin, Jen Fin.
In: Measurement: Journal of the International Measurement Confederation, Vol. 150, 107021, 01.2020.Research output: Contribution to journal › Article
TY - JOUR
T1 - Uses of empirical mode decomposition and multi-entropy techniques to establish the correlations among vibrations, friction coefficients and component wear of ball-bearing-like specimens
AU - Han, Chang Fu
AU - Wu, Cheng Chun
AU - Chu, Hsiao Yeh
AU - Tsai, Ping Hsueh
AU - Horng, Jeng Haur
AU - Wei, Chin Chung
AU - Hwang, Yih Chyun
AU - Lin, Jen Fin
PY - 2020/1
Y1 - 2020/1
N2 - Ball-bearing-like specimens with two groove factors (GFs) are prepared to investigate surface roughness (Ra) effects on tribological parameters and vibrations. The self-adaptive decomposition (SAD) and the intrinsic mode function (IMF) are used to evaluate the multi-scale entropy (MSE). Define entropy tolerance (ET) as the difference in maximum and minimum MSE values. ET variations for the grove-like vibrations created at various IMFs are obtained. Average friction coefficients (μ¯) and wear losses (WL) are evaluated. (μ¯)outer ≪ (μ¯)inner ≪ (μ¯)spacer are the controlling factors for average vibration (AV). Increasing the ball-spacer gap (GD) and lowering GF can reduce AV. Smaller AV, AET, and (WL)spacer results are obtained from relatively smaller (μ¯)spacer. The developments of IMF and MSF provide a novel and efficient way to identify bearing's contact components governing the vibrations and tribological parameters of the tribo tests, and further establish the correlations for the result of AV, AET, μ¯, and (WL)spacer.
AB - Ball-bearing-like specimens with two groove factors (GFs) are prepared to investigate surface roughness (Ra) effects on tribological parameters and vibrations. The self-adaptive decomposition (SAD) and the intrinsic mode function (IMF) are used to evaluate the multi-scale entropy (MSE). Define entropy tolerance (ET) as the difference in maximum and minimum MSE values. ET variations for the grove-like vibrations created at various IMFs are obtained. Average friction coefficients (μ¯) and wear losses (WL) are evaluated. (μ¯)outer ≪ (μ¯)inner ≪ (μ¯)spacer are the controlling factors for average vibration (AV). Increasing the ball-spacer gap (GD) and lowering GF can reduce AV. Smaller AV, AET, and (WL)spacer results are obtained from relatively smaller (μ¯)spacer. The developments of IMF and MSF provide a novel and efficient way to identify bearing's contact components governing the vibrations and tribological parameters of the tribo tests, and further establish the correlations for the result of AV, AET, μ¯, and (WL)spacer.
UR - http://www.scopus.com/inward/record.url?scp=85072581504&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072581504&partnerID=8YFLogxK
U2 - 10.1016/j.measurement.2019.107021
DO - 10.1016/j.measurement.2019.107021
M3 - Article
AN - SCOPUS:85072581504
VL - 150
JO - Measurement: Journal of the International Measurement Confederation
JF - Measurement: Journal of the International Measurement Confederation
SN - 0263-2241
M1 - 107021
ER -