Results 81 to 90 of about 540,714 (317)

Friction coefficient estimation using an unscented Kalman filter [PDF]

, 2014
The friction coefficient between a railway wheel and rail surface is a crucial factor in maintaining high acceleration and braking performance of railway vehicles; therefore, monitoring this friction coefficient is important.
Liang, Bo, Zhao, Yunshi, Iwnicki, Simon
core   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

Effects of Commensurability on Stick and Slip Conditions at Solid–Fluid Interface

Lubricants
We report the results of molecular dynamics simulations of the frictional behavior of a Lennard–Jones fluid confined between two solid crystalline walls.
Vadym Borysiuk, Mikhail Popov, Valentin L. Popov   +2 more
doaj   +1 more source

Microstructurally flexible high entropy alloys: Linkages between alloy design and deformation behavior

Materials & Design, 2020
Development of multicomponent alloys, popularly known as high entropy alloys (HEAs) provides abundant compositional space for designing a variety of HEAs, including equiatomic, dual phase and microstructurally flexible (MF-HEAs).
S.S. Nene, M. Frank, P. Agrawal, S. Sinha, K. Liu, S. Shukla, R.S. Mishra, B.A. McWilliams, K.C. Cho   +8 more
doaj   +1 more source

Friction Analysis on Scratch Deformation Modes of Visco-Elastic-Plastic Materials [PDF]

, 2012
Understanding of abrasion resistance and associated surfaces deformation mechanisms is of primary importance in materials engineering and design. Instrumented scratch testing has proven to be a useful tool for characterizing the abrasion resistance of ...
D.J. , Schipper, J. , Jamari, I. , Syafaat, Budi , Setiyana   +3 more
core  

Multi-physics simulation of friction stir welding process

, 2009
Purpose: The Friction Stir Welding (FSW) process comprises of several highly coupled (and non-linear) physical phenomena: large plastic deformation, material flow transportation, mechanical stirring of the tool, tool-workpiece surface interaction ...
Robert Hamilton, Li, Hongjun, Hongjun Li, Hamilton, Robert, Mackenzie, D., Mackenzie, Donald, Hamilton, R., Donald MacKenzie   +7 more
core   +1 more source

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

Macro and micro structural responses of dissimilar TC4/TC17 titanium alloy joints in linear friction welding and post-welding heat treatment processes and their effects on tensile and fatigue performance

Journal of Materials Research and Technology
The heterogeneous TC4 (Ti–6Al–4V)/TC17 (Ti–5Al–2Sn–2Zr–4Mo–4Cr) joint, formed by linear friction welding (LFW) and post-weld treatment, shows significant potential for blisk manufacturing in aircraft engines.
Jiatao Liu, Jinglong Li, Feng Jin, Da Zhang, Wei Guo, Jiangtao Xiong   +5 more
doaj   +1 more source

Demo 03-05 Surface Dependence of Friction

, 2001
This demonstration illustrates that the frictional force between different surfaces is very different. Four identical brass blocks are placed on strips of four different materials, and one end of the device is raised, as indicated in Figure 1, until ...

core  

Consumed by Abdominal Distention

Arthritis Care &Research, EarlyView.
Abimbola Fadairo‐Azinge, James Grenert, Brian Haas, Mary Margaretten   +3 more
wiley   +1 more source