The impact of surface slope and calculation resolution on the fractal dimension for fractures of steels after bending-torsion fatigue

Wojciech Macek

doi:10.1088/2051-672x/ac58ae

The impact of surface slope and calculation resolution on the fractal dimension for fractures of steels after bending-torsion fatigue

Abstract

The article presents the results of the fractal dimension measurements on the fatigue fracture surfaces of 10HNAP and S355J2 steels specimens after combined bending-torsion fatigue. For smooth and ring-notched specimens, three loading conditions were analyzed: (1) bending; (2) bending-torsion; and (3) torsion fatigue. Post-failure surface topography measurements were carried out on the entire fracture surfaces using an optical profilometer. The fractal dimension was computed with general slope and after removing them by leveling operation, as well as with two different resolutions. The analysis of the fractal dimension delineated by the enclosing boxes method (EBM) allowed to formulate guidelines that, in terms of further estimation of the method of failure, the optimum is extra-fine resolution without leveling.

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Wojciech Macek dr hab. inż.

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DOI:: Digital Object Identifier (open in new tab) 10.1088/2051-672X/ac58ae
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Keywords

FRACTAL DIMENSION, FATIGUE, FRACTURE, STEEL, BENDING-TORSION

Details

Category:: Articles
Type:: artykuły w czasopismach
Published in:: Surface Topography-Metrology and Properties no. 10, pages 1 - 22,
ISSN: 2051-672X
Language:: English
Publication year:: 2022
Bibliographic description:: Macek W.: The impact of surface slope and calculation resolution on the fractal dimension for fractures of steels after bending-torsion fatigue// Surface Topography-Metrology and Properties -, (2022),
DOI:: Digital Object Identifier (open in new tab) 10.1088/2051-672x/ac58ae
Verified by:: Gdańsk University of Technology