Accelerated vibration-fatigue characterization for 3D-printed structures : application to fused-filament-fabricated PLA samples

Česnik, Martin (author), Slavič, Janko (author), Boltežar, Miha (author)

Numerous processing parameters combined with long-duration fatigue tests pose a major challenge when assessing the fatigue parameters of 3D-printed structures. In this research, a fatigue-testing method is introduced where sample is excited with random-signal profile enclosing sample’s natural frequency. The innovative sample design is tailored for 3D-printing and is frequency-tuneable. The proposed approach results in significantly shorter fatigue tests due to higher loading frequency and simultaneous testing of multiple samples. Additionally, tracking of sample’s natural frequency and damping during fatigue tests is applicable. The proposed method was experimentally verified on PLA samples; obtained results were comparable with the available literature.

• Language: English
• Keywords: accelerated fatigue tests, random-signal excitation, specimen design, fused filament fabrication
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2023
• Number of pages: 12 str.
• Numbering: Vol. 171, art. 107574
• PID: 20.500.12556/RUL-145241
• UDC: 539.4:620.178.3
• ISSN on article: 0142-1123
• DOI: 10.1016/j.ijfatigue.2023.107574
• COBISS.SI-ID: 141842691
• Publication date in RUL: 13.04.2023

Record is a part of a journal

• Title: International journal of fatigue
• Shortened title: Int. j. fatigue
• Publisher: Elsevier
• ISSN: 0142-1123
• COBISS.SI-ID: 25643520

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: pospešeni testi utrujanja, vzbujanje z naključnim signalom, zasnova preizkušanca, izdelava s ciljnim nalaganjem filamenta

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0263
• Name: Mehanika v tehniki