Experimental Study of Interaction between Brake-Disc Surface Texture and Friction Material on Friction and Wear through Small-Scale Tests on Tribotester

2014 ◽  
Vol 7 (4) ◽  
pp. 1321-1333 ◽  
Author(s):  
Toshikazu Okamura
Keyword(s):  
Experimental Study ◽  
Surface Texture ◽  
Friction And Wear ◽  
Friction Material ◽  
Small Scale ◽  
Brake Disc ◽  
Disc Surface

scholarly journals The Effect of Surface Texture on Lubricated Fretting

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4886
Author(s):  
Agnieszka Lenart ◽  
Pawel Pawlus ◽  
Andrzej Dzierwa ◽  
Slawomir Wos ◽  
Rafal Reizer
Keyword(s):  
Coefficient Of Friction ◽  
Surface Texture ◽  
Friction And Wear ◽  
Normal Load ◽  
Disc Surface ◽  
The Coefficient Of Friction ◽  
42Crmo4 Steel ◽  
Ball Diameter ◽  
Steel Balls ◽  
Effect Of Surface

Experiments were conducted using an Optimol SRV5 tester in lubricated friction conditions. Steel balls from 100Cr6 material of 60 HRC hardness were placed in contact with 42CrMo4 steel discs of 47 HRC hardness and diversified surface textures. Tests were carried out at a 25–40% relative humidity. The ball diameter was 10 mm, the amplitude of oscillations was set to 0.1 mm, and the frequency was set to 80 Hz. Tests were performed at smaller (45 N) and higher (100 N) normal loads and at smaller (30 °C) and higher (90 °C) temperatures. During each test, the normal load and temperature were kept constant. We found that the disc surface texture had significant effects on the friction and wear under lubricated conditions. When a lower normal load was applied, the coefficient of friction and wear volumes were smaller for bigger disc surface heights. However, for a larger normal load a higher roughness corresponded to a larger coefficient of friction.

scholarly journals Friction and Wear Characteristics of Rubber Resin-Bonded Metallic Brake Pad Materials

2019 ◽  
Vol 8 (6) ◽  
pp. 1312-1316
Keyword(s):  
Friction And Wear ◽  
Physical And Mechanical Properties ◽  
Friction Material ◽  
Brake Disc ◽  
Brake Pad ◽  
Sliding Velocity ◽  
Wear Characteristics ◽  
Pin On Disc ◽  
Set Up ◽  
Friction And Wear Characteristics

This paper aims to present comparative study of friction and wear characteristics of non-asbestos rubber resin bonded metallic based brake pad material. Friction material was compression moulded and machined to a sample size. Their physical and mechanical properties were studied. Experiments were conducted using Pin-on-disc test set-up against EN31 disc. Coefficient of friction and wear was measured for metallic based brake materials at varying conditions of temperature, sliding velocity, pressure and sliding distance. When brake pads are in contact with brake disc, heat is generated hence thermal behaviour of metallic based brake material and its impact on friction and wear were studied. Experiments, based on Taguchi’s analysis technique, using L9 orthogonal array were performed. On the basis of experimental results and S/N ratio analyses, ranking of the parameters have been done. It was found that temperature (95.37 %) and sliding velocity (2.99 %) are most affecting parameters in friction, However temperature (82.96 %) and pressure (6.80) in wear. The elemental composition of metallic based brake material was measured by EDS technique. SEM micrographs of brake pad samples were tested at different magnifications. Further detailed studies are suggested to evaluate wear rate, stopping distance under simulative test conditions alternate to asbestos based brake pad material.

Tribological performance of non-asbestos brake friction material in contact with brake disc of varying topography

2020 ◽  
Vol 72 (10) ◽  
pp. 1277-1283
Author(s):  
Dinesh Shinde ◽  
Mukesh Bulsara ◽  
K.N. Mistry
Keyword(s):  
Surface Roughness ◽  
Surface Topography ◽  
Peer Review ◽  
Surface Finish ◽  
Friction Material ◽  
Tribological Performance ◽  
Brake Disc ◽  
Content Type ◽  
Disc Surface ◽  
Brake Friction Material

Purpose The purpose of this paper is to evaluate experimentally the influence of different surface roughness of the contacting disc on tribological performance of the non-asbestos brake friction material (BFM). Design/methodology/approach Taguchi method was applied to design an experiment using three different discs of gray cast iron with different surface roughness, which is measured using optical profilometer. These discs were subjected to sliding against pins prepared with the developed non-asbestos BFM, using pin on disc friction and wear monitor. Findings The experimental results shows that the disc 2 (Ra = 3.77 µm) gives wear of 22.78 µm and coefficient of friction of 0.462, which is recommended for extreme brake performance. Analysis of Taguchi design revealed that the disc surface was most significant parameter among the parameters under study. Practical implications During braking, continuous sliding between the BFM and brake disc or drum not only results into wear of BFM but also changes the surface finish of the brake drum or disc. This leads to variation in surface topography of the drum or disc surface with application of brakes, which further affects the characteristics of the BFM. Originality/value The tribological performance of BFM depends upon the topography of the surface on which it was sliding. To get best performance of the non-asbestos friction materials, disc having moderate surface finish is recommended. Scanning electron microscope micrographs had shown the different plateaus formed and energy-dispersive X-ray spectroscopy spectra identified presence of different chemical elements prior to sliding of the pins surface over different discs surface topography. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2020-0120/

scholarly journals Experimental Study of Sintered Friction Material with Coconut Fiber for Brake Pads

2018 ◽  
Vol 55 (3) ◽  
pp. 389-392
Author(s):  
Camelia Pinca Bretotean ◽  
Andrei Lucian Craciun ◽  
Ana Josan ◽  
Erika Ardelean
Keyword(s):  
Experimental Study ◽  
Composite Material ◽  
Composite Materials ◽  
Friction And Wear ◽  
Laboratory Experiments ◽  
Mechanical Characteristics ◽  
Friction Material ◽  
Coconut Fiber ◽  
Brake Pads

The paper presents the laboratory experiments and the results obtained regarding the production and characterization of composite materials with coconut fiber for the manufacture of brake pads for small vehicles and medium performances. The experimental research of composite material with organic components determined the influence of some material factors and parameters of the sintering regime on the physico-mechanical characteristics of the tested samples. Knowledge of these characteristics offers the possibility of pertinent appraisals regarding the behaviour of the composite materials intended for used in brake pads applications. Materials with the best features will be selected to determine the functional characteristics of friction and wear.

Small scale experimental study of the dynamic response of a tension leg platform wind turbine

2014 ◽  
Vol 6 (5) ◽  
pp. 053108 ◽  
Author(s):  
Anders Mandrup Hansen ◽  
Robert Laugesen ◽  
Henrik Bredmose ◽  
Robert Mikkelsen ◽  
Nikolaos Psichogios
Keyword(s):  
Experimental Study ◽  
Dynamic Response ◽  
Wind Turbine ◽  
Small Scale ◽  
Tension Leg Platform
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