Observations of the Peeling Mode of Failure and Surface-Originated Flaking from a Ring-to-Ring Rolling Contact Fatigue Test Rig

2009 ◽  
pp. 150-150-16 ◽  
Author(s):  
M Tokuda ◽  
M Nagafuchi ◽  
N Tsushima ◽  
H Muro
Keyword(s):  
Fatigue Test ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Ring Rolling ◽  
Test Rig ◽  
Mode Of Failure

Devise of the RCF Test Rig for Ceramic Bearing Ball by Design Methodology

2010 ◽  
Vol 44-47 ◽  
pp. 1773-1776
Author(s):  
Jing Ling Zhou ◽  
Guo Qing Wu ◽  
Xiao Yang Chen ◽  
Wei Nan Zhu ◽  
Yu Song Ren ◽  
...  
Keyword(s):  
Fatigue Test ◽  
Design Methodology ◽  
Function Analysis ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Test Rig ◽  
Ceramic Bearing ◽  
Pure Rolling ◽  
Bearing Ball

It is presented to apply the designing methodology in design of an accelerated pure rolling contact fatigue test rig for ceramic bearing ball. Starting with function analysis, the request and structure of test rig are analysed. Meanwhile, the form matrix table is established, from which many designing schemes can be obtained. In accordance with several kinds of innovation schemes, the appraised decision of product is analyzed. The specimen machine is made according to the design scheme in the design of innovation.

Developmental studies on rolling contact fatigue test rig

Wear ◽  
2008 ◽  
Vol 264 (7-8) ◽  
pp. 708-718 ◽  
Author(s):  
V. Manoj ◽  
K. Manohar Shenoy ◽  
K. Gopinath
Keyword(s):  
Fatigue Test ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Developmental Studies ◽  
Test Rig

Mechanical Testing

2005 ◽  
pp. 311-327
Keyword(s):  
Fatigue Test ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Mechanical Tests ◽  
Rolling Contact ◽  
Test Procedures ◽  
Single Tooth ◽  
Root Strength ◽  
Single Overload ◽  
Surface Durability

Abstract Mechanical tests are performed to evaluate the durability of gears under load. The chapter first discusses the processes involved in the computations of stress for test parameters of gear. Next, the chapter reviews the four areas of specimen characterization of a test program, namely dimensional, surface finish texture, metallurgical, and residual stress. The following section presents the tests that simulate gear action, namely the rolling contact fatigue test, the single-tooth fatigue test, the single-tooth single-overload test, and the single-tooth impact test. Finally, the chapter describes the test procedures for surface durability (pitting), root strength (bending), and scoring (or scuffing) testing.

Wheel–rail low adhesion issues and its effect on wheel–rail material damage at high speed under different interfacial contaminations

2019 ◽  
Vol 233 (15) ◽  
pp. 5477-5490 ◽  
Author(s):  
Bing Wu ◽  
Boyang An ◽  
Zefeng Wen ◽  
Wenjian Wang ◽  
Tao Wu
Keyword(s):  
High Speed ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Experimental Results ◽  
Test Rig ◽  
Adhesion Mechanism ◽  
Numerical Investigations ◽  
Rail Wear ◽  
Adhesion Condition

The objective of this paper is to ascertain the wheel–rail low adhesion mechanism using a high-speed wheel–rail rolling contact test rig under different interfacial contaminations. Based on the experimental results, a numerical method was proposed to investigate the wheel–rail wear and rolling contact fatigue due to low adhesion issues. The experimental results indicated that the wheel–rail low adhesion phenomena can happen under interfacial liquid contaminations, especially at high-speed running condition. Preliminary numerical investigations showed that the low adhesion condition can easily lead to sliding hence serious wear, especially at the speed between 160 km/h and 200 km/h. The temperature rise within the contact patch can be significantly more severe once wheel and rail are in full slip, causing rolling contact fatigue due to material softening.

Damage in Thermal-Sprayed WC-Co Coatings by Repeated Load

1997 ◽  
Author(s):  
T. Tajiri ◽  
N. Sakoda ◽  
S. Yamamoto ◽  
S. Watanabe
Keyword(s):  
Fatigue Test ◽  
Fatigue Cracks ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Medium Carbon Steel ◽  
Rolling Contact ◽  
Surface Damages ◽  
Load Tests ◽  
Repeated Load ◽  
Thermally Sprayed

Abstract Two types of WC-12wt%Co powders, each manufactured by a different process, were thermally sprayed on a medium carbon steel by HVOF, and repeated load tests (rolling contact fatigue test and high cycles fatigue test) were carried out. The surface damages for the two types of coatings were investigated. It has been clear that the coating damages depend on the types of powders. It has been found that in rolling contact fatigue, there are the coatings, in which damage is characterized by delamination, and by a mixture of delamination and cracks. And it has also been found that in high cycles fatigue, there are the coatings, in which damage is characterized by net-like fatigue cracks, and by linear fatigue cracks.

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