Profile wear prediction of railroad wheels and its integration with profile optimization considering wear and surface damage evolution

2019 ◽  
Author(s):  
Christofer Feldmeier
Keyword(s):  
Damage Evolution ◽  
Surface Damage ◽  
Wear Prediction ◽  
Profile Optimization ◽  
Railroad Wheels

scholarly journals Influence of sub-surface damage evolution on low-energy-plasma-driven deuterium permeation through tungsten

2018 ◽  
Vol 58 (5) ◽  
pp. 056027 ◽  
Author(s):  
Stefan Kapser ◽  
Martin Balden ◽  
Tiago Fiorini da Silva ◽  
Stefan Elgeti ◽  
Armin Manhard ◽  
...  
Keyword(s):  
Damage Evolution ◽  
Surface Damage ◽  
Low Energy

Wheel profile optimization procedure to minimize flange wear considering profile wear evolution

2021 ◽  
pp. 095440972110347
Author(s):  
Hiroki Yamashita ◽  
Christofer Feldmeier ◽  
Yosuke Yamazaki ◽  
Takanori Kato ◽  
Takahiro Fujimoto ◽  
...  
Keyword(s):  
Damage Index ◽  
Optimization Procedure ◽  
Surface Damage ◽  
Wear Simulation ◽  
Wheel Wear ◽  
Material Loss ◽  
Index Model ◽  
Wheel Profile ◽  
Wear Reduction ◽  
Profile Optimization

This study aims to develop a wheel profile optimization procedure to minimize flange wear considering the wear evolution. To this end, the wheel wear simulation capability is integrated into the profile optimization framework such that a total material loss can be minimized under design constraints. This allows for the wear reduction to be maintained over an extended traveling distance, while an optimized profile, minimizing the frictional energy for only the initial profile, would not ensure the optimum performance after the profile wear becomes significant. Furthermore, to enable a balanced mitigation of the profile wear and surface damage, the damage index model is introduced to the weighted objective function, considering profile wear evolution. Using flange wear tests with a scaled roller test rig, wear reduction of the optimized profile is experimentally validated. The wear simulation results agree with the test data. It is demonstrated that the flange wear and tread surface damages are reduced simultaneously over an extended traveling distance using the profile optimization procedure developed in this study.

Surface damage evolution during transient thermal shock of W-2%vol Y2O3 composite material in different surfaces

2019 ◽  
Vol 139 ◽  
pp. 86-95 ◽  
Author(s):  
Gang Yao ◽  
Xiao-Yue Tan ◽  
Lai-Ma Luo ◽  
Kai-Jun Hong ◽  
Xiang Zan ◽  
...  
Keyword(s):  
Composite Material ◽  
Thermal Shock ◽  
Damage Evolution ◽  
Surface Damage ◽  
Transient Thermal

Microstructural Surface Damage Evolution During Tensile Straining of Calcium Carbonate Containing High Density Polyethylene

2004 ◽  
Vol 10 (S02) ◽  
pp. 668-669
Author(s):  
P. Nerikar ◽  
A. Dasari ◽  
R.D.K. Misra
Keyword(s):  
Calcium Carbonate ◽  
High Density Polyethylene ◽  
Damage Evolution ◽  
Surface Damage ◽  
High Density ◽  
Microstructural Surface

Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.

scholarly journals Evaluating Corrosion Damage Evolution of Cement Mortar in Acid Environment via Relative Elasticity Modulus Method

2018 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Elastic Modulus ◽  
Damage Evolution ◽  
Cement Mortar ◽  
Corrosion Damage ◽  
Surface Damage ◽  
Relative Method ◽  
Damage Layer ◽  
Damage Degree ◽  
Acid Environment ◽  
Hcl Concentration

In order to study the damage variation along thickness from surface, a relative method combined with impulse excitation test was studied in this work to evaluate the elastic modulus of cement mortar corrosion damage layer, by simulating the damage layer as a coating. The damage layer with different damage degree is treated as multilayer coatings in which each layer has different properties. The elastic modulus of each layer is determined by using the relative method step by step. Single face of Portland cement mortar specimens was exposed in an aggressive environment, with 0%, 5%, 7.5% and 10% HCl content, respectively. The corrosion damage degree and evolution law of the mortar were investigated by measuring the elastic modulus of surface damage layer. With the increase of HCl concentration, thickness of corrosion damage layer increased and the modulus of the damage layer decreased greatly. The elastic modulus of each corrosion layer was obtained at different depths. By this way, damage depth and damage evolution were evaluated effectively.

Surface damage evolution of KDP crystals induced by conical cracks under irradiation of nanosecond laser

2021 ◽  
Author(s):  
Ding Wenyu ◽  
Mingjun Chen ◽  
Jian Cheng ◽  
Hao Yang ◽  
Linjie Zhao ◽  
...  
Keyword(s):  
Damage Evolution ◽  
Surface Damage ◽  
Nanosecond Laser ◽  
Kdp Crystals
Sign in / Sign up

Export Citation Format

Share Document