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Gearbox Mechanical Efficiency Determination by Strain Gauges Direct Application
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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, ORCIDArticle 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
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