PT  - JOURNAL ARTICLE
AU  - Hagara, Martin
AU  - Huňady, Róbert
AU  - Trebuňa, František
TI  - Stress Analysis Performed in the Near Surrounding of Small Hole by a Digital Image Correlation Method
DP  - 2014 Oct 31
TA  - Acta Mechanica Slovaca
PG  - 74--81
VI  - 18
IP  - 3
AID - 10.21496/ams.2014.033
IS  - 13352393
AB  - The paper deals with the description of the whole process of stress fields identification performed in the near surrounding of a small hole using digital image correlation. At first the authors simply describe the principles and possibilities of modern optical devices working on digital image correlation principle. After then they focus on the analysis of strain fields as well as investigation of the influence of some correlation parameters such as facet size, virtual grid, smoothing and size of the calibration target on the accuracy and quality of the obtained results. As the correlation systems usually serve only for strain analysis, the stress analysis with properly set correlation parameters was done in Q-STRESS v.1.0 - a program developed at the authors department. The obtained results were processed in a form of graphs and tables and finally compared with the results achieved numerically using FEM.