Rolling Contact Fatigue: Experimental Study of the Influence of Sliding, Load, and Material Properties on the Resistance to Micropitting of Steel Discs

2013 ◽  
Vol 56 (2) ◽  
pp. 203-214 ◽  
Author(s):  
Pierre Rabaso ◽  
Thibaut Gauthier ◽  
Moussa Diaby ◽  
Fabrice Ville
Keyword(s):  
Experimental Study ◽  
Material Properties ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact

A Rolling Contact Fatigue Reliability Evaluation Method and its Application to a Slewing Bearing

2012 ◽  
Vol 134 (1) ◽  
Author(s):  
Gao Xue Hai ◽  
Huang Xiao Diao ◽  
Hong Rong Jing ◽  
Wang Hua ◽  
Chen Jie
Keyword(s):  
Material Properties ◽  
Evaluation Method ◽  
Rolling Contact Fatigue ◽  
Oscillation Amplitude ◽  
Contact Fatigue ◽  
Operating Conditions ◽  
Rolling Contact ◽  
Fatigue Reliability ◽  
Stochastic Behavior ◽  
Slewing Bearing

Rolling contact fatigue (RCF) corresponds to the formation of the first spall, which is a stochastic behavior; therefore, the RCF life should be reliably calculated. A method for evaluating RCF reliability was developed based on the Lundberg-Palmgren theory and ISO 281. The method took into consideration the contact load, the geometric parameters of contact pairs, the oscillation amplitude, the RCF reliability and the material properties. Because the method was derived from a widely accepted theory and empirical standards, it can be used for engineering applications. Finally, the RCF reliability of a slewing bearing under complex operating conditions was determined using the developed method.

The initiation of local rolling contact fatigue on railway wheels: An experimental study

2020 ◽  
Vol 132 ◽  
pp. 105354 ◽  
Author(s):  
Xin Zhao ◽  
Zhe Wang ◽  
Zefeng Wen ◽  
Hengyu Wang ◽  
Dongfang Zeng
Keyword(s):  
Experimental Study ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Railway Wheels

Influence of Initial Residual Stress on Material Properties of Bearing Steel During Rolling Contact Fatigue

2014 ◽  
Vol 57 (3) ◽  
pp. 533-545 ◽  
Author(s):  
Bryan Allison ◽  
Ghatu Subhash ◽  
Nagaraj Arakere ◽  
David A. Haluck ◽  
Herb Chin
Keyword(s):  
Residual Stress ◽  
Material Properties ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Bearing Steel ◽  
Rolling Contact ◽  
Initial Residual Stress

A 3D Finite Element Study of Fatigue Life Dispersion in Rolling Line Contacts

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Nick Weinzapfel ◽  
Farshid Sadeghi ◽  
Vasilios Bakolas ◽  
Alexander Liebel
Keyword(s):  
Finite Element ◽  
Shear Stress ◽  
Material Properties ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Critical Shear Stress ◽  
Rolling Contact ◽  
Shear Stresses ◽  
Rolling Element Bearings ◽  
Rolling Element

Rolling contact fatigue of rolling element bearings is a statistical phenomenon that is strongly affected by the heterogeneous nature of the material microstructure. Heterogeneity in the microstructure is accompanied by randomly distributed weak points in the material that lead to scatter in the fatigue lives of an otherwise identical lot of rolling element bearings. Many life models for rolling contact fatigue are empirical and rely upon correlation with fatigue test data to characterize the dispersion of fatigue lives. Recently developed computational models of rolling contact fatigue bypass this requirement by explicitly considering the microstructure as a source of the variability. This work utilizes a similar approach but extends the analysis into a 3D framework. The bearing steel microstructure is modeled as randomly generated Voronoi tessellations wherein each cell represents a material grain and the boundaries between them constitute the weak planes in the material. Fatigue cracks initiate on the weak planes where oscillating shear stresses are the strongest. Finite element analysis is performed to determine the magnitude of the critical shear stress range and the depth where it occurs. These quantities exhibit random variation due to the microstructure topology which in turn results in scatter in the predicted fatigue lives. The model is used to assess the influence of (1) topological randomness in the microstructure, (2) heterogeneity in the distribution of material properties, and (3) the presence of inherent material flaws on relative fatigue lives. Neither topological randomness nor heterogeneous material properties alone account for the dispersion seen in actual bearing fatigue tests. However, a combination of both or the consideration of material flaws brings the model’s predictions within empirically observed bounds. Examination of the critical shear stress ranges with respect to the grain boundaries where they occur reveals the orientation of weak planes most prone to failure in a three-dimensional sense that was not possible with previous models.

Herstellungsprozess und Wälzfestigkeit von hybriden Hochleistungsbauteilen/Manufacturing of Hybrid High-Performance Components under Rolling Contact Fatigue

Konstruktion ◽  
2018 ◽  
Vol 70 (09) ◽  
pp. 84-89
Author(s):  
Maximilian Mildebrath ◽  
Hans Jürgen Maier ◽  
Thomas Hassel ◽  
Timm Coors ◽  
Florian Pape ◽  
...  
Keyword(s):  
Material Properties ◽  
High Performance ◽  
Materials Science ◽  
Steel Substrate ◽  
Construction Material ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Industrial Applications ◽  
Rolling Contact ◽  
Tailored Forming

Inhalt: Moderne Massivbauteile werden herkömmlich aus Monomaterialien gefertigt. Viele Bauteile besitzen dabei Funktions- und Strukturbereiche, welche durch unterschiedliche Beanspruchungsprofile sehr unterschiedliche Anforderungen an den Konstruktionswerkstoff stellen. Somit ermöglicht das eingesetzte Material oft nur einen Kompromiss hinsichtlich der geforderten Materialeigenschaften und der Leistungsfähigkeit des Bauteils. Im Sonderforschungsbereich 1153 „Tailored Forming“ an der Leibniz Universität Hannover (LUH) werden neue Prozessketten zur Realisierung hoch belastbarer hybrider Massivbauteile entwickelt. In Zusammenarbeit des Instituts für Werkstoffkunde (IW) und des Instituts für Maschinenkonstruktion und Tribologie (IMKT) wurden hybride Lagerscheiben zum Einsatz als Axial-Zylinderrollenlagern entwickelt. Diese wurden mittels Plasma-Pulver-Auftragschweißen (PPA) aus Vergütungsstahl hergestellt (Bild 1) und anschließend bezüglich Ihrer Wälzfestigkeit untersucht. Diese Untersuchungen dienen als Grundlage zur Evaluierung von Leistungsfähigkeit und Qualität des Beschichtungsprozesses sowie der Materialeigenschaften. Mit ersten hybrid hergestellten Rohlingen werden Maschinenelemente gefertigt, um die Eignung des Prozesses für industrielle Anwendungen zu bewerten.   Abstract: Modern solid components are conventionally manufactured from monomaterials. Many components are equipped with functional and structural areas, which have to fulfil various demands regarding the construction material due to different stress profiles. Thus, the applied material offers a trade-off concerning the required material properties and the performance of the component. The Collaborative Research Center 1153 „Tailored Forming“ at Leibniz Universität Hannover (LUH) is developing new process chains for the realization of highly resilient hybrid solid components. In cooperation with the Institute of Materials Science (IW) and the Institute of Machine Design and Tribology (IMKT), multi-material bearing discs were developed for use as cylindrical roller thrust bearings. These were produced by plasma powder deposition welding (PPA) from heat treatable steel (Figure 1) on a steel substrate and then tested under rolling contact loads. These investigations serve as a basis for evaluating the performance and quality of the coating process as well as the material properties. In this publication, the above concept was proven for first hybrid produced workpieces in order to assess the suitability of the process for industrial applications.

Rolling Contact Fatigue of Wheel and Rail

2012 ◽  
Vol 54 (5) ◽  
pp. 304-312
Author(s):  
Florian Dörner ◽  
Otto Kleiner ◽  
Christian Schindler ◽  
Peter Starke ◽  
Dietmar Eifler
Keyword(s):  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact
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