Results 191 to 200 of about 1,058,340 (242)

Collagen‐Based Gut‐on‐Chip for In Vitro Modeling of Intestinal Barrier Function and Host‐Pathogen Interactions

Advanced Materials Technologies, EarlyView.
A collagen‐based gut‐on‐chip model replicates the intestinal extracellular matrix, supporting villi‐like structures, tight junctions, and mucin production. This biomimetic platform enables rapid epithelial differentiation and functional barrier formation.
Fernanda López García, Jacques Leng, Hugo de Oliveira, Pierre Nassoy, Karine Dementhon   +4 more
wiley   +1 more source

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Dry sliding wear mechanisms of the Ti6Al4V alloy

Wear, 1997
Abstract The dry sliding behaviour of the Ti6Al4V alloy was studied in order to highlight the mechanisms responsible for the poor wear resistance in different load and sliding speed conditions. By increasing the sliding speed, a transition from oxidative wear to delamination occurs with a corresponding minimum in the wear rate.
B Tesi, T Bacci, G Straffelini
exaly   +4 more sources

Viscoelastic tribopairs in dry and lubricated sliding friction

Soft Matter, 2020
A detailed study on the role of viscoelasticity of tribopairs in dry and lubricated sliding tribosystems.
A-Reum Kim, Aleksander Cholewinski, Sushanta K. Mitra, Boxin Zhao   +3 more
openaire   +2 more sources

Dry sliding wear of Cu–Be alloys

Wear, 2005
Abstract The tribological behaviour of two Cu–Be alloys was investigated under dry sliding conditions against an AISI M2 steel counterface. The first alloy, Cu–Be1, was characterized by a hardness of 390 HV and a thermal conductivity of 106 W/mK, whereas the second one, Cu–Be2, had a lower hardness, 270 HV, and a higher thermal conductivity, 208 W/mK.
Straffelini, Giovanni, Maines, Lorena, Pellizzari, Massimo, Scardi, Paolo   +3 more
openaire   +1 more source

Dry sliding wear of cermets

International Journal of Materials and Product Technology, 2007
The bearing and seals operate often in the conditions of sliding wear. The present paper is an overview, concerning various aspects of cermet-metal dry sliding. The sliding wear is more of a surface phenomenon than abrasion, making it difficult to predict the wear from bulk properties.
Mart Viljus, Juri Pirso
openaire   +1 more source

Finite‐element modeling of dry sliding wear in metals

Engineering Computations, 2001
This paper is concerned with the calibration and validation of a finite‐element model of dry sliding wear in metals. The model is formulated within a Lagrangian framework capable of accounting for large plastic deformations and history‐dependent material behavior.
Molinari, J. F., Ortiz, M., Radovitzky, R., Repetto, E. A.   +3 more
openaire   +2 more sources

The role of triboparticulates in dry sliding wear

Tribology International, 1998
In this paper, wear processes and mechanisms for wear transitions with sliding time and temperature during sliding of a nickel-based alloy, N80A, in oxygen at temperatures to 250°C are discussed. Transitions in wear from high rates to low rates with sliding time were always observed at all the temperatures investigated.
Jiang, Jiaren, Stott, F.H., Stack, Margaret   +2 more
openaire   +4 more sources

Dry sliding wear behaviour of bamboo

Wear, 1998
Abstract Dry sliding wear behaviour of bamboo ( Phyllostachys pubescens ) against a grey iron (HT200) was examined on a block-on-ring machine. The wear volume of bamboo was a function of the normal load, the sliding velocity and the relative orientation of bamboo fibres with respect to the rubbing surface.
Jin Tong, R.D Arnell, Lu-Quan Ren
openaire   +1 more source

Sliding mode compensation of dry friction

Proceeding of the 1996 IEEE International Conference on Control Applications IEEE International Conference on Control Applications held together with IEEE International Symposium on Intelligent Control IEEE International Symposium on Computer-Aided Contro, 2002
This paper presents a sliding mode position controller for ultra-precision machining. Simulation results show the effectiveness of both continuous and discrete time sliding mode controllers. The friction model is Coulomb friction with a stick-slip effect and it is accurately simulated using a state event handler. The results suggest that this technique
null Seok-Beom Lee, E.A. Misawa, D.A. Lucca   +2 more
openaire   +1 more source

Dry Sliding of Nitrided NiTiHf

Tribology Transactions, 2019
AbstractThe unlubricated friction and wear properties of the superelastic material NiTiHf, treated by either gas nitriding or plasma nitriding, have been investigated. Pin-on-disk testing of the studied materials was performed at sliding speeds from 0.01 to 1 m/s at normal loads of 1, 5, or 10 N.
openaire   +1 more source