首页|Fatigue fracture surface metrology of thin-walled tubular austenitic steel specimens after asynchronous loadings
Fatigue fracture surface metrology of thin-walled tubular austenitic steel specimens after asynchronous loadings
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NSTL
Elsevier
? 2022 The Author(s)This paper aims to study the effect of asynchronous axial-torsional strain-controlled loading histories on fracture surface behavior of thin-walled tubular X5CrNi18-10 (304/304L) austenitic steel specimens. Tests under pure axial loading and pure torsional loading are also conducted to better segregate the effect of multiaxiality. The fractures surface topographies were examined through the profiles over the entire surface with the support of an optical measurement system. Then, features of the post-failure fractures were related to the loading conditions and the fatigue life. The outcomes indicate that the multiaxial loading path significantly affects the surface topography. Overall, fracture surface parameters increase for higher fatigue lives. Based on the dialectic relationship, a fatigue damage model able to estimate the fatigue lifetime under asynchronous axial-torsional loading histories has been successfully developed. The fracture surface topology parameters collected from both sides of the same specimen lead to comparable results which reinforces the applicability of the proposed approach.
Austenitic steelFatigue life estimationFractographyMultiaxial fatigueNon-proportional loadingSurface metrology
Macek W.、Pejkowski、Branco R.、Masoudi Nejad R.、Zak K.
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Gdańsk University of Technology Faculty of Mechanical Engineering and Ship Technology
UTP University of Science and Technology in Bydgoszcz
University of Coimbra CEMMPRE Department of Mechanical Engineering Rua Luís Reis Santos
School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China
Opole University of Technology Faculty of Mechanical Engineering
NSTL
Elsevier
