Aljaž Litrop (Author), Peter Zobec (Author), Domen Šeruga (Author), Marko Nagode (Author), Jernej Klemenc (Author)

Abstract

The present paper investigates crack growth in specially designed specimens of 6061 aluminium alloy sheets subjected to dynamic shear loads. The specimens were tested with a low-frequency alternating shear load until complete fracture. The main objective of this work was to observe the crack initiation and growth under alternating shear load using the Digital Image Correlation (DIC) method. Each time the peak amplitude was reached, a photograph of the shear area on the specimen surface was taken to investigate crack grow. The length of the crack in every load cycle was then estimated by an algorithm using the DIC strain fields as input data. The DIC results were compared to FE. The observation of the shear strain component is presented as the most appropriate method to predict the location of the crack even before its initiation.

Keywords

fatigue;shear;crack propagation;digital image correlation method;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 531.391:620.178.3
COBISS: 111079427 Link will open in a new window
ISSN: 1350-6307
Views: 208
Downloads: 24
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Other data

Secondary language: Slovenian
Secondary keywords: utrujanje;strig;rast razpoke;metoda digitalne korelacije slik;
Type (COBISS): Article
Embargo end date (OpenAIRE): 2024-05-31
Pages: str. 1-11
Issue: ǂVol. ǂ139
Chronology: Sep. 2022
DOI: 10.1016/j.engfailanal.2022.106495
ID: 15584969