magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
Štefan Škrinjar (Author), Martin Česnik (Mentor), Miha Boltežar (Co-mentor)

Abstract

Eden od izzivov, povezanih z uporabo 3D natisnjenih izdelkov, je določanje njihove dobe trajanja. V magistrski nalogi je predstavljen način, kako pridobiti materialne lastnosti utrujanja (Wohlerjevo krivuljo) iz preprostega in hitrega vibracijskega testa vzbujanja z naključnim signalom. Postopek temelji na primerjavi eksperimentalnih in teoretičnih dob trajanja, določenih iz numeričnega modela s frekvenčnimi števnimi metodami. Analizirani vzorci so se razlikovali po barvi, smeri tiska in dimenziji. Iz rezultatov je bil prepoznan vpliv različnih lastnosti vzorcev in uspešno potrjen postopek za določanja materialnih lastnosti.

Keywords

magistrske naloge;procesni parametri;3D tiskanje;dinamski odziv strukture;gostota;močnostnega spektra napetosti;Wohlerjeva krivulja;trajanje;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [Š. Škrinjar]
UDC: 004.925.84:621.79(043.2)
COBISS: 120223747 Link will open in a new window
Views: 309
Downloads: 84
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Other data

Secondary language: English
Secondary title: Assesment of material fatigue parameters for 3D printed samples during vibration excitation
Secondary abstract: One of the challenges, associated with using 3D printed products, is determining their fatigue life. The master’s thesis presents a way to obtain material fatigue parameters (Wohler curve) using a simple and fast vibration excitation test with a random signal. The procedure is based on a comparison of experimental and theoretical fatigue lives, determined from a numerical model with frequency counting methods. The analyzed samples differed in color, print direction and dimension. From the results, the influence of different properties of the samples was identified and the procedure for determining the material properties was successfully confirmed.
Secondary keywords: master thesis;3D printing;process parameters;structure’s dynamic response;stress power spectral density;fatigue life;Wohler curve;
Type (COBISS): Master's thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. Ljubljana, Fak. za strojništvo
Pages: XXII, 61 str.
ID: 16345603
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