High-speed camera based optical measurement methods for in-mesh tooth deflection analysis of thermoplastic spur gears

Černe, Borut (author), Petkovšek, Martin (author)

The engineering characteristics of polymer gears, such as wear and fatigue resistance, are dictated by the underlying processes that take place during the gear meshing phase. These are in turn dependent on the running load, speed, temperature, lubrication regime and other parameters. So far, the structural response of a meshing gear could only be analysed using numerical approaches, typically involving the finite element method. In this study, an optical experimental analysis approach is proposed to evaluate the in-mesh gear tooth deflection based on high-speed camera recordings. For this purpose, two image processing methods were implemented, namely the well-known Digital image correlation method and a newly proposed Edge displacement detection method. Using an experimental setup with a camera resolution of px, an exposure time of 40 μs, a frame rate of fps and a 2000lm focused light source, a measurement accuracy of μm could be achieved. A good correlation between both methods and finite element analysis results was confirmed. Furthermore, the newly proposed Edge displacement detection method offers high potential for experimental analysis of long term wear and strain accumulation processes.

• Language: English
• Keywords: high-speed cameras, DIC, FEM, image processing, plastic gears, polymers
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2022
• Number of pages: 13 str.
• Numbering: Vol. 223, art. 111184
• PID: 20.500.12556/RUL-141667
• UDC: 621.83
• ISSN on article: 0264-1275
• DOI: 10.1016/j.matdes.2022.111184
• COBISS.SI-ID: 122858499
• Publication date in RUL: 05.10.2022

Record is a part of a journal

• Title: Materials & design
• Shortened title: Mater. des.
• Publisher: Scientific and Technical Press
• ISSN: 0264-1275
• COBISS.SI-ID: 10626075

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

• Language: Slovenian
• Keywords: hitre kamere, DIC, FEM, obdelava slik, plastični zobniki, polimeri

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: Z2-3208
• Name: Zobniki iz trajnostnih biološko osnovanih kompozitov – razvoj in vrednotenje zmogljivosti na podlagi nadgrajenih eksperimentalnih analiz in numeričnih simulacij