Design, testing, and sensitivity analysis of a torsional cyclic test adapter

Gaber, Klara (author), Škrlec, Andrej (author), Klemenc, Jernej (author), Šeruga, Domen (author)

In this article, a torsional adapter is designed and evaluated through the comparison of analytical, numerical, and experimental tools. The adapter converts a conventional tension–compression test machine for cyclic loading to a modified application of both force-controlled and displacement-controlled torsional loading. The mechanism ensures a uniform distribution of loading application on both sides of the specimen. The determination of the durability curve can therefore be consistently carried out by acknowledging the geometric relation between the displacement of the test rig and the strain on the specimen. However, friction and clearance in the mechanism joints can cause energy dissipation; therefore, a detailed evaluation of this effect is mandatory before the use of the adapter. Here, it is shown that, using the current version of the adapter, the energy dissipation during torsional testing can be measured and later successfully considered during the determination of the torsional cyclic curve. Future improvements of the adapter will involve the reduction of the friction between the components of the mechanism.

• Language: English
• Keywords: torsion, mechanism, cyclic loading, friction, plasticity
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 20 str.
• Numbering: Vol. 12, iss. 2, [article no.] 90
• PID: 20.500.12556/RUL-154315-f03ac8ef-0246-d43c-97ff-f266519c163b
• UDC: 539.3
• ISSN on article: 2075-1702
• DOI: 10.3390/machines12020090
• COBISS.SI-ID: 184011523
• Publication date in RUL: 06.02.2024

Record is a part of a journal

• Title: Machines
• Shortened title: Machines
• Publisher: MDPI
• ISSN: 2075-1702
• COBISS.SI-ID: 17129750

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: torzija, mehanizem, ciklično obremenjevanje, trenje, plastičnost

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0182
• Name: Razvojna vrednotenja