Frictional Heat Simulation of Brake Composites in a Pin-on-Disc Tribotesting

2021 ◽  
Vol 32 ◽  
pp. 63-71
Author(s):  
Fikrat Fakhraddin Yusubov
Keyword(s):  
Wear Test ◽  
Comparative Investigation ◽  
Frictional Heat ◽  
Interface Temperature ◽  
Test Machine ◽  
Machine Model ◽  
Time Period ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Steel Disc

This paper presents the comparative investigation of temperature distributions in the pin-on-disc tribo-contact with dry friction conditions. Heat generation and distribution mechanism in contact of a pin made by phenolic resin–based brake friction composite and 35HNL steel disc counter-face material were studied. Both experimental and simulation methods were used to study the temperature changes. In order to analyse the thermal effects, the change in the coefficient of friction with time were also characterized. Experimental friction tests performed on universal “pin-on-disc"-type friction and wear test machine model MMW-1. Interface temperature measurements of the disc was conducted non-contact type infra-red laser thermometer. Heat simulations were modelled via finite element method using COMSOL Multiphysics 5.5, Heat Transfer in Solid Module. The simulations helped to determine in the increase of temperature over selected time period. Obtained experimental results compared with results of numerical analysis.

THE INFLUENCE OF THE ADDITION OF GRAPHITE ON THE TRIBOLOGICAL PROPERTIES OF POLYLACTIC (PLA) APPLIED IN 3D PRINTING TECHNOLOGY

Tribologia ◽  
2018 ◽  
Vol 277 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Wojciech PAWLAK ◽  
Wojciech WIELEBA ◽  
Janusz KLUCZYŃSKI ◽  
Lucjan ŚNIEŻEK
Keyword(s):  
3D Printing ◽  
Tribological Properties ◽  
Testing Machine ◽  
Linear Wear ◽  
Optimal Composition ◽  
Fused Filament Fabrication ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Steel Disc ◽  
Preliminary Research

The article presents the results of studies on the influence of the addition of graphite to a PLA filament on linear wear and the coefficient of friction. A cylinder of 8 millimetre diameter manufactured in Fused Filament Fabrication process, popularly called 3D printing was used as a specimen. Studies were conducted on pin-on-disc testing machine, in which the cylinders mentioned above were paired with a steel disc – the counter-specimen. Specimens used in research were enriched by 5%, 10%, 20%, and 30% of graphite in comparison to the base filament – Natural PLA, which were not enriched with any additions that could improve its tribological properties. The experiment was conducted as a preliminary research. The gained results create a basis to select the optimal composition of additions to the PLA to create a filament with better tribological properties.

scholarly journals Wear Behaviour of SAE 4340 Steel in Comparison with Single Test Specimen

2020 ◽  
Vol 12 (3) ◽  
pp. 219-228
Author(s):  
Nadendla SRINIVASABABU
Keyword(s):  
Wear Behavior ◽  
Wear Test ◽  
Steel Specimen ◽  
Wear Behaviour ◽  
Progressive Damage ◽  
Test Machine ◽  
Loading Test ◽  
Test Speed ◽  
4340 Steel ◽  
Pin On Disc

This study addresses the progressive damage of a surface/specimen/component caused by another substance in relative motion. This could cause the change in geometry, dimensions of the part which loses the practical functionality. So, an attempt was made to study the wear behavior of SAE 4340 steel using a pin-on-disc wear test machine at different loading, test speed, and time. Two cases viz. (1) single steel specimen, (2) multiple specimens were considered for the wear test and the obtained wear (μm), and frictional force (N) was compared.

scholarly journals Tribological investigation on oil blended with Additive using Response surface methodology

2020 ◽  
Vol 170 ◽  
pp. 01025
Author(s):  
Tushar Gadekar ◽  
Dinesh Kamble
Keyword(s):  
Response Surface Methodology ◽  
Wear Rate ◽  
Response Surface ◽  
Coefficient Of Friction ◽  
Comparative Investigation ◽  
Friction Model ◽  
Specific Wear Rate ◽  
Unknown Parameters ◽  
Pin On Disc ◽  
The Coefficient Of Friction

Friction and wear in dynamic parts is the primary reason for energy loss in gearbox lubrication system and this can be optimized by utilizing modified lubricant. The tribological nature of gearbox system is critically affected by factors such as type of lubricant, loading & speed etc. In latest years, multiple advanced oil and modern tribological techniques & instruments have been utilized to investigate behaviour of oil like pin on disc, Fourball tester etc. This paper presents comparative investigation of oil blended with additive for two different conditions using prediction model & RSM. The design of experimentations has been conducted by using response surface methodology. The value of inputs parameters such as concentration, load & sliding velocity ranges from 0.5 to 5 %, 60 to 100 N and 0.65 to 1.5 m/s, respectively are utilized to evaluate the outcomes of coefficient of friction and specific wear rate. At the end results from Prediction equations are compared with experimental literature based outcomes to signify the effect of parameters like blend %, load & Sliding speed. The Coefficient of friction model showed 47.57 % more closer outcomes as compared to the Specific wear rate model for specific variation of unknown parameters for pin on disc setup in oil.

Friction behaviors of staple carbon fiber composites

2020 ◽  
Vol 34 (07n09) ◽  
pp. 2040002
Author(s):  
Yi-Ching Cheng ◽  
Chang-Mou Wu ◽  
Po-Chun Lin ◽  
Wen-You Lai ◽  
Po-Hsun Chen ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Sliding Wear ◽  
Wear Test ◽  
Fiber Composites ◽  
Frictional Heat ◽  
Carbon Fiber Composites ◽  
Test Machine ◽  
Frictional Behavior ◽  
Frictional Heat Generation ◽  
Dynamic Friction Coefficient

This study aims to examine the frictional behavior of staple carbon fiber composites (sCFCs). The staple carbon fiber reinforced polycarbonate (PC) composites were prepared by film stacking for two different impregnation levels. Mechanical properties such as tensile and flexural strengths and moduli and static/dynamic friction coefficient (COF) were determined. The COF and temperature as a function of wearing cycles for sCFCs subjected to different applied pressures were also determined by a disk-on-disk sliding wear test machine. The less impregnated sample exhibited superior tribological performance owing to its rough surface and low frictional heat generation.

Research on Friction Property of Pin on Disc and Analysis of Wear Mechanism Based on MMW-1A Friction and Wear Testing Machine

2018 ◽  
Vol 764 ◽  
pp. 86-92
Author(s):  
Zhi Peng Chen ◽  
Xiao Yi Jin ◽  
Chun Yun Ji ◽  
Chuan Wang ◽  
Jian Liu Zhu
Keyword(s):  
Friction Factor ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Mechanical Design ◽  
Testing Machine ◽  
Wear Test ◽  
Wear Testing ◽  
Wear Volume ◽  
Test Machine ◽  
Pin On Disc

Friction and wear are very important in mechanical design. This paper studies the friction and wear characteristics of 45 steel under oil lubrication. The sliding friction and wear experiment was carried out with the pin plate friction pairs on the MMW-1A friction and wear test machine. Researching the influence of velocity on friction factor under the same load, the relation between wear and load and wear analysis under the same speed different loads. The results showed that under the same load and with the increase of velocity, the friction factor had a gradually decreasing trend. When some of the parameters were certain, the wear volume and the loading force was roughly linear relation. Pitting occurred when the load increased.

Tribological Behavior of Steel Reinforced Glass/Epoxy Hybrid Composites

2021 ◽  
Vol 1163 ◽  
pp. 27-39
Author(s):  
Ganesh R. Chavhan ◽  
Lalit N. Wankhade
Keyword(s):  
Hybrid Composite ◽  
Hybrid Composites ◽  
Testing Time ◽  
Volume Percentage ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Steel Disc ◽  
En 31 ◽  
Sliding Distance ◽  
Worn Surfaces

In this paper, the specific wear rate (SWR) and the coefficient of friction (CoF) of steel embedded glass/epoxy hybrid composites were examined and compared. Experiments were carried on the pin-on-disc machine on different types of composite materials like plain composite (steel volume 0%) and hybrid composites (steel volume 5% and 10%) pressed against a rotating steel disc (EN 31). Composites were fabricated using the hand-lay-up method. The volume percentage of steel pin/pipe varied from 0 to 10% and glass fiber from 50 to 60%, while the percentage of epoxy was kept 40% stable. The experiments were carried out on a group of samples for duration 20 minutes for different loads of 70N, 80N, 90N, 100N, and 110N with a varying sliding distance of 1000 m, 1250 m, 1500 m, 1750 m, and 2000 m. The results show that the SWR and CoF vary with different load and sliding distance. In general, CoF rises for some time of rubbing, and then it remains constant for the rest of the testing time. The results obtained show that the SWR and CoF increase with increasing sliding distance and load for all the composites. However, SWR and CoF decrease as an increase in the volume percentage of steel. An SWR of hybrid composite is observed to be reduced by 28.02% and 45.98% with an increasing percentage of steel by 5% and 10% respectively. CoF of hybrid composite is observed to be reduced by 14.11% and 24.02% with an increasing percentage of steel by 5% and 10% respectively. At last, the worn surfaces of the hybrid composites were studied through a Scanning Electron Microscope (SEM). Shallow and fine grooves appeared on the worn surfaces of hybrid composites at low loads and cracks were found in large quantities at high load which increased weight loss.

Wear Behavior of Zirconium Oxide (ZrO2) Coating over the Surface of Electro Less Nickel Plating on Tool Steel Substrate

2013 ◽  
Vol 440 ◽  
pp. 88-91
Author(s):  
P.M. Madhankumar ◽  
S. Ilaiyavel
Keyword(s):  
Tool Steel ◽  
Coefficient Of Friction ◽  
Zirconium Oxide ◽  
Wear Behavior ◽  
Steel Substrate ◽  
Wear Test ◽  
Wear Loss ◽  
Nickel Plating ◽  
Pin On Disc ◽  
The Coefficient Of Friction

The knowledge of the properties of the coating in terms of wear resistance is of paramount importance in order to prevent the formation of severe damages. In this study, the wear performances of Zirconium oxide (ZrO2) coating over the surface of electro less nickel plating on aluminum and tool steel substrate is analyzed. The surface morphology of coatings was examined by Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectroscopy (EDX) .The wear tests were performed in a pin on disc apparatus as per ASTM G-99 Standard. The coefficient of friction and wear loss are evaluated. The results of the wear test established that coated pins exhibited the lowest average coefficient of friction and the lowest wear loss when compared with uncoated pins.

Effects of fiber surface modification on the friction coefficient of luffa fiber/polyester composites under dry sliding condition

2016 ◽  
Vol 36 (8) ◽  
pp. 837-846 ◽  
Author(s):  
G. Kalusuraman ◽  
I. Siva ◽  
J.T. Winowlin Jappes ◽  
S. Anand Kumar
Keyword(s):  
Unsaturated Polyester ◽  
Fiber Surface ◽  
Wear Test ◽  
Resin Matrix ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Compression Pressure ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Fiber Surface Treatment

Abstract In this study, the fiber extracted from the fruit of a luffa plant was used as a reinforcement to an unsaturated polyester resin matrix under two different fiber conditions. The untreated and alkali-treated fibers were impregnated and pressed to produce laminates. Composites were made with an optimal compression pressure of 5 MPa for 12 h of curing at room temperature. Ejected samples were cut according to the dimensions specified by the ASTM test specifications. To investigate the effects of fiber surface treatment on the frictional behavior of the produced composites under dry sliding wear conditions, wear test was conducted in a pin-on-disc equipment as per ASTM G99 at varying sliding velocities. In addition, hardness and un-notched impact strengths were measured and discussed. Results showed that the change in fiber surface morphology significantly changed the coefficient of friction of the composites. Moreover, the sliding distance had a prominent influence in increasing the friction between the composite and the counter face.

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