A Pin-on-Disk Experimental Set-up for Vibrational Smoothing of Dry Friction

In the article a continuous method for measurement of wear under conditions of technically dry friction of tribological kinematic pairs of the type pin–on–disk of T–11 tester, as an example is presented. Also taken up was a test of an evolved simple method for evaluation of correction on the participation of thermal expansion in size change of a frictional kinematic pair. The analysis of obtained results showed the existence of correlation between total experimental wear and analytical value of total wear (decrease of linear dimension of pin).

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THE FRICTION AND WEAR CHARACTERISTICS OF SI3N4 CERAMIC AGAINST SI3N4 CERAMIC ZRO2 CERAMIC AND CHILLED CAST IRON AND AL2O3 CERAMIC UNDER DRY FRICTION

International Journal of Modern Physics B ◽

10.1142/s0217979210065490 ◽

2010 ◽

Vol 24 (15n16) ◽

pp. 2700-2705

Author(s):

XIAO TIAN ◽

JIANGANG NIU ◽

CUIBIAO WANG

Keyword(s):

Cast Iron ◽

Silicon Nitride ◽

Dry Friction ◽

Friction And Wear ◽

Normal Load ◽

Si3n4 Ceramic ◽

Pin On Disk ◽

Wear Maps ◽

Chilled Cast Iron ◽

Friction And Wear Characteristics

The friction and wear of silicon nitride ( Si 3 N 4) against silicon nitride ( Si 3 N 4) and zirconia (Y–TZP) and chilled cast iron and Alumina sliding under dry friction at room temperature conditions were investigated with pin-on-disk tribometer at sliding speed of 0.56ms-1 and normal load of 50N, 80N, respectively. Based on the variety regulation of the wear maps, the wear mechanisms of the two couples were analyzed. Get the result of friction coefficient and maps of wear Rate of the Pin and the Disk. The results of comparing this couple is Si 3 N 4/ chilled cast iron < Si 3 N 4/ ZrO 2< Si 3 N 4/ Si 3 N 4< Si 3 N 4/ Al 2 O 3.

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Analysis of a Drill-String Experimental Set-Up with Dry Friction-Induced Torsional Vibration

Mechanisms and Machine Science - Proceedings of the 10th International Conference on Rotor Dynamics – IFToMM ◽

10.1007/978-3-319-99270-9_33 ◽

2018 ◽

pp. 456-469 ◽

Cited By ~ 1

Author(s):

Bruno C. Cayres ◽

Cesar A. Fonseca ◽

Guilherme Sampaio ◽

Hans I. Weber

Keyword(s):

Torsional Vibration ◽

Dry Friction ◽

Drill String ◽

Set Up

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Influences of Gases on the Tribological Properties of Pure Iron

ASME/STLE 2011 Joint Tribology Conference ◽

10.1115/ijtc2011-61205 ◽

2011 ◽

Cited By ~ 1

Author(s):

Kanao Fukuda ◽

Joichi Sugimura

Keyword(s):

Tribological Properties ◽

Dry Friction ◽

Pure Iron ◽

High Vacuum ◽

Ultra High Vacuum ◽

The Other ◽

Vacuum Vessel ◽

Friction Coefficients ◽

Wear Rates ◽

Pin On Disk

In this study, trace oxygen and water as impurities in experimental gas environments were reduced to less than 10 ppb to eliminate their influences on the tribological properties. A pin-on-disk apparatus in an ultra-high vacuum vessel equipped with a gas filtering system enabled pure experimental gas environments. Dry friction tests clarified that the tribological properties of pure iron in ultra-high vacuum and argon were similar to each other. On the other hand, friction coefficients obtained in hydrogen and nitrogen were considerably lower than those obtained in ultra-high vacuum and argon. Specific wear rates of pin and disk were close to each other in ultra-high vacuum, argon and hydrogen while those took very different values in nitrogen. Hydrogen influenced the tribological properties of pure iron to some extent but the influences were not as much as that of nitrogen.

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Study of the Effect of Type (Cu, Ti and Cu, Mo) Electrospark Coatings on Friction in Pin-on-Disk Testing

Journal of Tribology ◽

10.1115/1.2842296 ◽

2008 ◽

Vol 130 (2) ◽

Cited By ~ 4

Author(s):

Antoszewski Bogdan ◽

Evin Emil ◽

Audy Jaromír

Keyword(s):

Experimental Study ◽

Surface Roughness ◽

Competitive Advantage ◽

Dry Friction ◽

Bottom Layer ◽

Surface Coatings ◽

Commercial Exploitation ◽

Steel Material ◽

Pin On Disk ◽

Disk Testing

Recent advances in the commercial exploitation of electrospark coatings have focused on improving surface roughness by depositing Ti, Mo, V, or W over an interlayer of Cu, Sn, Pb, or Cd on the top of a tool steel material. This paper presents results of a systematic pin-on-disk experimental study of different type bilayer coatings (Cu–Sn/bronze, bottom layer; Ti and Mo, top layer) deposited on a Type 45 steel. The results are discussed in terms of friction coefficients obtained under different dry-friction conditions (speeds ranging from 0.3m∕sto0.8m∕s, and pressures ranging from 10Nto40N). An additional focus is on scuffling resistance of faces in friction, microhardness and surface roughness of coated items, and the competitive advantage of using advanced surface coatings.

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Friction Coefficient as a Macroscopic View of Local Dissipation

Journal of Tribology ◽

10.1115/1.2768083 ◽

2007 ◽

Vol 129 (4) ◽

pp. 829-835 ◽

Cited By ~ 16

Author(s):

D. Richard ◽

I. Iordanoff ◽

Y. Berthier ◽

M. Renouf ◽

N. Fillot

Keyword(s):

Friction Coefficient ◽

Dry Friction ◽

Three Dimensional ◽

Third Body ◽

The Third ◽

Dynamic Friction Coefficient ◽

Approaches To Study ◽

Set Up ◽

Method Approach ◽

Simple Interaction

This paper presents an overview of a discrete element method approach to dry friction in the presence of a third body. Three dimensional computer simulations have been carried out to show the influence of the third body properties (and more specifically their adhesion) on friction coefficient and profiles of dissipated power. Simple interaction laws and a cohesive contact are set up to uncouple the key parameters governing the contact rheology. The model is validated through a global energy balance. As it is shown that dynamic friction coefficient can be explained only in terms of local energy dissipation, this work also emphasizes the fact that mechanism effects and third body rheology have important consequences on the energy generation and dissipation field. Therefore, asymmetries can arise and the surface temperature of first bodies can be significantly different even for the same global friction coefficient value. Such investigations highlight the fact that friction coefficient cannot be considered in the same way at the mechanism scale as at the contact scale where the third body plays a non-negligible role, although it has been neglected for years in thermal approaches to study of surfaces in contact.

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Microstructure and Tribological Performance of Mesocarbon Microbead–Silicon Carbide Composites

Materials ◽

10.3390/ma12193127 ◽

2019 ◽

Vol 12 (19) ◽

pp. 3127 ◽

Cited By ~ 1

Author(s):

Xiaojie Wang ◽

Xiumin Yao ◽

Hui Zhang ◽

Xuejian Liu ◽

Zhengren Huang

Keyword(s):

Silicon Carbide ◽

Tribological Properties ◽

Dry Friction ◽

Tribological Performance ◽

Wear Process ◽

Lubricating Film ◽

Sic Composites ◽

Pin On Disk ◽

Disk Method ◽

Pls Method

Mesocarbon microbead–silicon carbide (MCMB–SiC) composites with 0–30 wt % MCMBs were prepared by pressureless sintering (PLS) method at 2200 °C in Ar. The microstructure and tribological properties of the prepared composites were investigated. The results show that there was a finer grain size of SiC with the increase in MCMB content because MCMBs hinder the growth of SiC grains. The hardness of the composites decreased with increasing MCMB content, whereas the fracture toughness fluctuated showing a complex trend. The tribological properties of the composites under dry friction conditions were evaluated using the pin-on-disk method against a SiC counterpart. We found that the tribological properties of the samples were influenced by the oxide film or lubricating film that formed during the wear process on wear surfaces. Different wear mechanisms were found to be associated with differing MCMB contents.

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HPC FEM Calculations for Damping Estimation of Bladed Disk With Dry-Friction Contacts

Volume 7: 32nd Conference on Mechanical Vibration and Noise (VIB) ◽

10.1115/detc2020-22070 ◽

2020 ◽

Author(s):

Ludek Pesek ◽

Pavel Snabl ◽

Vitezslav Bula

Keyword(s):

Dry Friction ◽

Reasonable Agreement ◽

Dynamical Behaviour ◽

Fe Model ◽

Linear Solution ◽

Bladed Disk ◽

Set Up ◽

3D Finite Element Method ◽

Computational Strategy ◽

Damping Estimation

Abstract The experimental set-up for studying dynamical behaviour of the bladed wheel with pre-stressed dry-friction contacts in tie-bosses was built. The numerical solution of the turbine bladed wheel with tie-bosses based on 3D finite element method with surface to surface dry friction contact model is proposed. Comparison of experimental and numerical results of dynamical behaviour and damping estimation of our bladed wheel design yielded a reasonable agreement. Due to dry friction contacts and non-linear solution of 3D FE model it, however, leads to HPC computations and long computation times. The contribution deals with description of proposed computational strategy for damping evaluation and achieved results, too.

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