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Gearbox Mechanical Efficiency Determination by Strain Gauges Direct Application

SYSNO ASEP	0551823
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Gearbox Mechanical Efficiency Determination by Strain Gauges Direct Application
Author(s)	Lopot, F. (CZ) Dub, M. (CZ) Flek, J. (CZ) Hadraba, Daniel (FGU-C)_{RID, ORCID, SAI} Havlíček, M. (CZ) Kučera, L. (CZ) Štoček, O. (CZ) Veselý, T. (CZ) Janáček, Jiří (FGU-C)_{RID, ORCID}
Article number	11150
Source Title	Applied Sciences-Basel. - : MDPI Roč. 11, č. 23 (2021)
Number of pages	16 s.
Language	eng - English
Country	CH - Switzerland
Keywords	strain-gauge ; efficiency ; notch ; FEM ; calibration
OECD category	Medical laboratory technology (including laboratory samples analysis
R&D Projects	LM2018129 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	FGU-C - RVO:67985823
UT WOS	000742654500001
EID SCOPUS	85119973125
DOI	10.3390/app112311150
Annotation	This article describes a unique method of measuring the efficiency of gearboxes using foil strain gauges, which allows maintaining the current configuration of the gearbox within the overall assembly of the machine and its functional condition. The presented method is applicable to gearboxes located in the original equipment assembly without the need to use a test rig. Using foil strain gauges, the torque at the input and output of the gearbox is detected. Therefore, the accuracy of torque measurement is key. The crucial step is the calibration of the instrumentation to the given application conditions, which, in this case, is ensured by a virtual calibration using a very accurate FEM analysis. The accuracy of the position of strain gauges and virtual calibration of measurements generate inaccuracies affecting the resulting uncertainty of the determined efficiency. The present article shows, on the example of several measurements, that when using 24-bit converters, after processing the obtained data, mechanical stress with a sensitivity better than hundredths of an MPa can be reliably detected even without signal amplification from strain gauges. It follows that the efficiency is determined with an accuracy of better than low units of tenths.
Workplace	Institute of Physiology
Contact	Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400
Year of Publishing	2022
Electronic address	https://www.mdpi.com/2076-3417/11/23/11150

Number of the records: 1