Wear and friction analysis of bio-ceramic cordierite system as orthopedic material

Friction and wear of materials with additional deformation or stress is not a broadly described case. However, scientific publications considering this issue point out that additional deformation and stress ought to be taken into account during wear and friction analysis. In this article, the influence of strain in thermoplastics (POM, PTFE, PE-HD, PMMA) over the friction coefficient is described. Materials were deformed under tensile stress and examined after 24 hours. For specimens in which plastic strain was maintained, the decline of hardness (PE-HD: approximately 70% decrease, PTFE: approximately 40% decrease) and the reduction of the coefficient of kinetic friction (both PTFE and PE-HD: about 20% decrease) were observed. POM returned to its pre-deformed shape and PMMA was deformed without reaching its elastic limit. In these cases, only small changes in hardness (POM: approximately 10% decrease, PMMA: approximately 6% increase) and friction coefficients (maximum 4% change) occurred.

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Wear and Friction Behavior of Epoxy/MWCNTs Nanocomposites under Dry Sliding Conditions

Current Nanoscience ◽

10.2174/15734137113099990053 ◽

2013 ◽

Vol 9 (6) ◽

pp. 766-772 ◽

Cited By ~ 2

Author(s):

C. Sabarinathan ◽

Md. Ali ◽

S. Muthu

Keyword(s):

Dry Sliding ◽

Friction Behavior ◽

Wear And Friction

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Tribotechnical characteristics of hard alloys in sliding friction units

Voprosy Materialovedeniya ◽

10.22349/1994-6716-2020-102-2-87-97 ◽

2020 ◽

pp. 87-97

Author(s):

K. D. Khromushkin ◽

B. G. Ushakov ◽

A. V. Kochergin ◽

R. A. Suleev ◽

O. N. Parmenova

Keyword(s):

Experimental Data ◽

Sliding Friction ◽

Heating Temperature ◽

Hard Alloys ◽

Friction Units ◽

Wear And Friction ◽

Friction Path ◽

Friction Parameters ◽

Tribotechnical Characteristics ◽

Temperature Surface

The paper presents experimental data on the study of the friction parameters of hard alloys in sliding friction units, including the heating temperature, surface roughness, wear and friction coefficient, depending on the duration of the test and the friction path.

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Friction analysis during deformation of steels under hot-working conditions

Tribology International ◽

10.1016/j.triboint.2021.106928 ◽

2021 ◽

Vol 158 ◽

pp. 106928

Author(s):

Ivan Serebriakov ◽

Eli Saul Puchi-Cabrera ◽

Laurent Dubar ◽

Philippe Moreau ◽

Damien Meresse ◽

...

Keyword(s):

Working Conditions ◽

Hot Working ◽

Friction Analysis

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Nondestructive Quantitative Evaluation of Yarns and Fabrics and Determination of Contact Area of Fabrics Using the X-ray Microcomputed Tomography System for Skin-Textile Friction Analysis

ACS Applied Materials & Interfaces ◽

10.1021/acsami.0c18300 ◽

2021 ◽

Vol 13 (3) ◽

pp. 4652-4664

Author(s):

Ruksana Baby ◽

Kavita Mathur ◽

Emiel DenHartog

Keyword(s):

Quantitative Evaluation ◽

Contact Area ◽

Microcomputed Tomography ◽

X Ray ◽

Tomography System ◽

Friction Analysis

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Effects of ceramic-based CrN, TiN, and AlCrN interlayers on wear and friction behaviors of AlTiSiN+TiSiN PVD coatings

Ceramics International ◽

10.1016/j.ceramint.2021.04.015 ◽

2021 ◽

Author(s):

Doğuş ÖZKAN ◽

M. Alper YILMAZ ◽

Mirosław SZALA ◽

Cenk TÜRKÜZ ◽

Dariusz Chocyk ◽

...

Keyword(s):

Pvd Coatings ◽

Wear And Friction

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Friction Analysis on Vane of an Existing and of a Novel Multi Vane Rotary Compressor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.284-287.763 ◽

2013 ◽

Vol 284-287 ◽

pp. 763-767

Author(s):

A.R. Sarip ◽

M.N. Musa

Keyword(s):

The Other ◽

Rotary Compressor ◽

Brushless Dc Motor ◽

Dramatic Reduction ◽

Brushless Dc ◽

Inner Surface ◽

Instantaneous Pressure ◽

All Speeds ◽

Friction Analysis ◽

Angle Of Rotation

This paper presents results of a frictional analysis on a new rotating sleeve multi-vane rotary (RSMVR) compressor. The new five-vane rotary compressor is adapted from the existing concept of a rotating sleeve single-vane rotary (RSSVR) compressor, in which the extended rounded end of one vane is embedded into the inner surface of the sleeve which allows the vane to swing within a certain small angle. As the rotor rotates, this vane drives the sleeve which in turn pushes and pulls the vane into and out of the slot in the rotor, respectively. The other four vanes are similarly pushed into the respective slots in the rotor but slide out only when a sufficient centrifugal force is developed. The driving vane ensures that suction, compression and discharge of the gas occur at all speeds of rotation. Although the sleeve rotates along, due to eccentricity between the rotor and the sleeve, each tip of the four vanes still rubs against the inner surface of the sleeve. The focus of the present study limits its analysis on to only frictions between the vane tip and the inner surface of the sleeve and between the vane sides and the respective slot walls. The frictional analysis is carried out by first determining the instantaneous pressure inside the compression cell and all the associated forces that exist. This involves an analysis on the dynamics of each vane when it reciprocates and at the same time rotates eccentrically with the sleeve. The kinematics of the vane are modelled using cosine and sine rules taking the cell leading vane as a reference to the angle of rotation. In the operation the model estimates a dramatic reduction in friction which is up to 82% lower than that occurs in an existing design of an equivalent conventional multi-vane rotary compressor (MVR). A friction between the rotating sleeve and the two opposite end plates exists in the RSMVR compressor but does not in that of the MVR. This will be included in a later study but on a new integrated brushless DC motor RSMVR compressor concept and on that of the existing shaft driven MVR, to see the overall difference in the frictions exerted.

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