Profile and areal surface parameters for fatigue fracture characterisation

被引：0
|
作者：
Macek W. [1 ]
Branco R. [2 ]
Szala M. [3 ]
Marciniak Z. [4 ]
Ulewicz R. [5 ]
Sczygiol N. [6 ]
Kardasz P. [7 ]
机构：
[1] Opole University of Technology, 76 Proszkowska St., Opole
[2] CEMMPRE, Department of Mechanical Engineering, University of Coimbra, Rua Luís Santos, Coimbra
[3] Department of Materials Engineering, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36D, Lublin
[4] Department of Mechanics and Machine Design, Opole University of Technology, ul. Mikolajczyka 5, Opole
[5] Department of Production Engineering and Safety, Czestochowa University of Technology, Czestochowa
[6] Faculty of Mechanical Engineering and Computer Science, Czestochowa University of Technology, Czestochowa
[7] Wroclaw School of Information Technology, Lutra 4, Wrocław
来源：
Mater. | 2020年 / 17卷
关键词：
Bending-torsion fatigue; Fatigue fracture; Surface metrology; Surface topography;
D O I：
10.3390/MA13173691
中图分类号：
学科分类号：
摘要：
Post-mortem characterisation is a pivotal tool to trace back to the origin of structural failures in modern engineering analyses. This work compared both the crack propagation and rupture roughness profiles based on areal parameters for total fracture area. Notched and smooth samples made of weather-resistant structural steel (10HNAP), popular S355J2 structural steel and aluminium alloy AW-2017A under bending, torsion and combined bending-torsion were investigated. After the fatigue tests, fatigue fractures were measured with an optical profilometer, and the relevant surface parameters were critically compared. The results showed a great impact of the loading scenario on both the local profiles and total fracture areas. Both approaches (local and total fracture zones) for specimens with different geometries were investigated. For all specimens, measured texture parameters decreased in the following order: total area, rupture area and propagation area. © 2020 by the authors.
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