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Title: Automated method for fractographic analysis of shape and size of dimples on fracture surface of high-strength titanium alloys
Authors: Konovalenko, Ihor
Maruschak, Pavlo
Prentkovskis, Olegas
Keywords: dimples of tearing
fracture mechanisms
image processing
; identification of topological ridges
identification of boundaries between dimples
coefficient of roundness
visual depth
Issue Date: 2018
Publisher: Multidisciplinary Digital Publishing Institute (MDPI AG)
Citation: Konovalenko I., Maruschak P., Prentkovskis O. 2018. Automated Method for Fractographic Analysis of Shape and Size of Dimples on Fracture Surface of High-Strength Titanium Alloys, METALS 8(3).
Series/Report no.: 8;3
Abstract: An automated method for analyzing the shape and size of dimples of ductile tearing formed during static and impact fracture of titanium alloys VT23 and VT23M is proposed. The method is based on the analysis of the image topology. The method contains the operations of smoothing the initial fractographic image; its convolution with a filter to identify the topological ridges; thresholding with subsequent skeletonization to identify boundaries between dimples; clustering to isolate the connected areas that represent the sought objects—dimples. For each dimple, the following quantitative characteristics were calculated: area, coefficient of roundness and visual depth in units of image intensity. The surface of ductile tearing was studied by analyzing the peculiarities of parameter distribution of the found dimples. The proposed method is applied to fractograms of fracture surfaces of titanium alloys VT23 and VT23M.
URI: http://dspace.vgtu.lt/handle/1/3756
ISSN: 2075-4701
Appears in Collections:Moksliniai straipsniai / Research articles

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