Email this article and Applied Mechanics
56, 3, pp. 857-871, Warsaw 2018
DOI: 10.15632/jtam-pl.56.3.857
Investigations of material behaviour under monotonic tension using a Digital Image Correlation system
having U, V shapes. Their variants with respect to dimensions are illustrated in static
and fatigue tests. The influence of these types of geometrical imperfections on material
fatigue is presented using variations of the W¨ohler curve, number of cycles to failure and
the fatigue notch factor. Results of experiments conducted by the use of the Digital Image
Correlation system called 4M Aramis are illustrated. Courses of tensile characteristics of the
41Cr4 steel, obtained by means of both techniques: extensometer and DIC are compared.
They indicated that the DIC technique can be a good tool for determination of mechanical
properties. The equivalent strain full-field distributions on specimens tensioned with and
without imperfections up to material fracture are presented. The influence of U and V
notches on variations of tensile curves is shown.
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