Modeling Abrasive Wear for Polymers Using Intersecting Scratching Technique

2005 ◽  
Author(s):  
Mark Chong Wai Lup ◽  
Sujeet K. Sinha ◽  
Seh Chun Lim
Keyword(s):  
Abrasive Wear ◽  
Wear Debris ◽  
Steel Surface ◽  
Scratch Test ◽  
Wear Performance ◽  
Wear Rates ◽  
Pin On Disc ◽  
Pin On Disk ◽  
Disk Test

This paper aims to model abrasive wear for polymers using intersecting scratching technique. Scratch test and pin-on-disc test were conducted on five different polymers. Wear debris generated by intersecting scratching test was compared and correlated with the specific wear rates of the same polymers in a pin-on-disk test using ground steel surface as the counterface. It is the purpose of this paper to establish that an intersecting scratching test can be used as a means to qualitatively and quantitatively characterize wear performance of polymers.

A Brief Review of Abrasive Wear Modelling Using a Numerical-Experimental Approach

2019 ◽  
Vol 799 ◽  
pp. 83-88
Author(s):  
Ewald Badisch ◽  
Markus Varga ◽  
Stefan J. Eder
Keyword(s):  
Abrasive Wear ◽  
Wear Mechanisms ◽  
Large Scale ◽  
Scratch Test ◽  
Industrial Applications ◽  
Material Point ◽  
Field Application ◽  
Wear Rates ◽  
Wear Modelling ◽  
Free Material

Abrasive wear limits the lifetime of key components and wear parts used in various applications. Damage is caused by indentation of harder particles into the wearing materials and subsequent relative motion resulting in ploughing, cutting, and fracture phenomena. The wear mechanisms depend mainly on the applied materials, loading conditions, and abrasives present in the tribosystem, hence material choice is often a difficult task and requires careful evaluation. For this, a variety of laboratory abrasion tests are available of which the scratch test is discussed in this work as the most fundamental abrasive interaction. For further insight into the acting wear mechanisms and microstructural effects, large-scale molecular dynamics simulations were carried out as well as meso-/macroscopic scratch simulations with the mesh-free Material Point Method. The prediction of abrasive wear is of high relevance for industrial applications. Up to now, no general one-to-one match between field application and lab system is known. Here, a simulation-based transfer of experimentally determined wear rates via a lab-2-field approach enables the prediction of wear rates in real applications.

Erosive-abrasive wear behavior of carbide-free bainitic and boron steels compared in simulated field conditions

2017 ◽  
Vol 232 (1) ◽  
pp. 3-13 ◽  
Author(s):  
E Vuorinen ◽  
V Heino ◽  
N Ojala ◽  
O Haiko ◽  
A Hedayati
Keyword(s):  
Abrasive Wear ◽  
Wear Behavior ◽  
Wear Test ◽  
Test Method ◽  
Affecting Factors ◽  
Related Condition ◽  
Wear Performance ◽  
Wear Rates ◽  
Bainitic Steels ◽  
Boron Steels

The wear resistance of carbide-free bainitic microstructures have recently shown to be excellent in sliding, sliding-rolling, and erosive-abrasive wear. Boron steels are often an economically favorable alternative for similar applications. In this study, the erosive-abrasive wear performance of the carbide-free bainitic and boron steels with different heat treatments was studied in mining-related conditions. The aim was to compare these steels and to study the microstructural features affecting wear rates. The mining-related condition was simulated with an application oriented wear test method utilizing dry abrasive bed of 8–10 mm granite particles. Different wear mechanisms were found; in boron steels, micro-cutting and micro-ploughing were dominating mechanisms, while in the carbide-free bainitic steels, also impact craters with thin platelets were observed. Moreover, the carbide-free bainitic steels had better wear performance, which can be explained by the different microstructure. The carbide-free bainitic steels had fine ferritic-austenitic microstructure, whereas in boron steels microstructure was martensitic. The level of retained austenite was quite high in the carbide-free bainitic steels and that was one of the factors improving the wear performance of these steels. The hardness gradients with orientation of the deformation zone on the wear surfaces were one of the main affecting factors as well. Smoother work hardened hardness profiles were considered beneficial in these erosive-abrasive wear conditions.

Influence of Steel Surface Preparation Method on Topography and Tribological Behaviour in Dry Sliding Conditions

2016 ◽  
Vol 674 ◽  
pp. 265-270 ◽  
Author(s):  
Andrzej Dzierwa
Keyword(s):  
Wear Debris ◽  
Steel Surface ◽  
Preparation Method ◽  
Tribological Behavior ◽  
Surface Preparation ◽  
Tribological Behaviour ◽  
Contact Conditions ◽  
Disc Surface ◽  
Pin On Disc ◽  
Steel Disc

Tribological tests were conducted using a pin-on-disc tester. In the experiment, a steel disc of hardness 40 HRC was put in contact with a steel ball of hardness 62 HRC. Disc samples were prepared in order to obtain very similar values of the Sa parameter, smaller than 0.5 μm. Different methods of preparing smooth surfaces were used. Dry tests using similar contact conditions were carried out. During tests, the friction force was monitored as a function of time. Wear of discs and balls was measured after the test using white light interferometer. In order to decrease variation of the experimental results, during tests the wear debris was continuously removed from the disc surface. It was shown that type of treatment play a role on tribological behavior of sliding pairs.

Micro-Scale Abrasive Wear of Soft Materials

2011 ◽  
Vol 314-316 ◽  
pp. 1330-1334
Author(s):  
Ping Chen ◽  
Jing Wan ◽  
Hua Chen
Keyword(s):  
Abrasive Wear ◽  
Soft Materials ◽  
Bulk Materials ◽  
Wear Performance ◽  
Wear Rates ◽  
Micro Scale ◽  
Test Conditions ◽  
Self Development ◽  
Coated Surface ◽  
Formation And Evolution

Ball-crating micro-scale abrasion technique has been used to determine the specific wear rates of coating and substrate by only one set of tests done with the coated surface. It can also be used to test wear performance of bulk materials. Some micro-scale abrasive wear problems about soft bulk materials were investigated with multifunctional micro-wear tester by self-development. And it was compared with Ni60B coating and TiN coating having higher hardness. The formation and evolution of ridges of the abrasion scar on soft material surfaces have been studied. The formation mechanism of ridges was discussed and the influencing factors on the ridge formation were analyzed. Recommendations were made for the optimum test conditions for micro-scale abrasive wear investigation of soft materials.

ABRASIVE WEAR BEHAVIOUR OF COPPER-SiC AND COPPER-SiO2 COMPOSITES

2013 ◽  
Vol 22 ◽  
pp. 416-423 ◽  
Author(s):  
TEJAS UMALE ◽  
AMARJIT SINGH ◽  
Y. REDDY ◽  
R. K. KHATITRKAR ◽  
S. G. SAPATE
Keyword(s):  
Abrasive Wear ◽  
Wear Debris ◽  
Copper Matrix ◽  
Wear Behaviour ◽  
Wear Volume ◽  
Matrix Composites ◽  
Debris Particles ◽  
Pin On Disc ◽  
Abrasive Wear Behaviour ◽  
Sliding Distance

The present paper reports abrasive wear behaviour of copper matrix composites reinforced with silicon carbide and silica particles. Copper – SiC (12%) and Copper-SiO2 (9%) composites were prepared by powder metallurgical technique. Metallography, image analysis and hardness studies were carried out on copper composites. The abrasive wear experiments were carried out using pin on disc apparatus. The effect of sliding distance and load was studied on Copper – SiC (12%) and Copper-SiO2 (9%) composites. The abrasive wear volume loss increased with sliding distance in both the composites although the magnitude of increase was different in each case. Copper – SiC (12%) composites exhibited relatively better abrasion resistance as compared to and Copper-SiO2 (9%) composites. The abraded surfaces were observed under scanning electron microscope to study the morphology of abraded surfaces and operating wear mechanism. The analysis of wear debris particles was also carried out to substantiate the findings of the investigation.

Sliding Friction and Wear Characteristics of Grade 410 Martensitic Stainless Steel

2014 ◽  
Vol 592-594 ◽  
pp. 1346-1351 ◽  
Author(s):  
Rakesh K. Rajan ◽  
Hemant Kumar ◽  
Shaju K. Albert ◽  
T.R. Vijayaram
Keyword(s):  
Stainless Steel ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Martensitic Stainless Steel ◽  
High Hardness ◽  
High Strength ◽  
Nuclear Industry ◽  
Wear Rates ◽  
Pin On Disc ◽  
Pin On Disk

Present work aimed at investigating the friction and wear of martensitic stainless steel of grade 410. This steel is used in nuclear industry for various moving components due to its high strength and moderate corrosion resistance. Properties of this material depend upon the heat treatment to which subjected to. The wear tests by sliding were performed on a pin on disk apparatus whose pin is in normalized and tempered condition. The counter face disc was machined from EN24 steel of high hardness in nature. The AISI 410 stainless steel wear rates were evaluated using Pin-on Disc Tribometer at various load and sliding speed. The worn pins were investigated by using scanning electron microscopy and surface profilometer.

Abrasive Wear Performance of CNT/PP Composites

2014 ◽  
Vol 592-594 ◽  
pp. 1262-1266
Author(s):  
A. Johnney Mertens ◽  
S. Senthilvelan
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Friction Mechanism ◽  
Wear Performance ◽  
Weight Percentage ◽  
Multi Walled Carbon Nanotube ◽  
Twin Screw ◽  
Pin On Disc ◽  
Disc Configuration ◽  
Abrasive Paper

In this work, abrasive wear performance of multi-walled carbon nanotube (CNT) reinforced polypropylene (PP) has been studied. Various weight percentage of CNT/PP nanocomposites were prepared through melt intercalation with the aid of twin screw extruder. Prepared composites were subjected to sliding wear against silicon carbide abrasive paper with the aid of pin-on-disc configuration. Worn out surface morphology were observed under microscope and non-contact profilometer to understand the wear mechanism. Since the dominant friction mechanism observed to be is ploughing, no lubrication effect of CNT was observed. CNT/PP composite exhibits inferior wear resistance than unfilled PP due to its brittleness. With increased CNT, wear resistance found to decreases.

scholarly journals Tribological investigation of multilayer CrN/CrCN/TaN films deposited by close field unbalanced magnettron sputtering

2019 ◽  
Vol 58 (1) ◽  
pp. 271-279 ◽  
Author(s):  
Erkan Bahce ◽  
Nese Cakir
Keyword(s):  
Wear Test ◽  
High Hardness ◽  
Scratch Test ◽  
Adhesion Properties ◽  
Cocrmo Alloy ◽  
Unbalanced Magnetron Sputtering ◽  
Unbalanced Magnetron ◽  
Pin On Disc ◽  
Pin On Disk ◽  
Wear Tests

AbstractCrN/CrCN/TaN multilayer films were deposited onto the CoCrMo alloy substrates at different number layers as two, four and 8 layers by close-field unbalanced magnetron sputtering method. Microstructure and the tribo-logical properties of the films were characterized by XRD, SEM, pin-on-disk wear test, scratch test, micro hardness. CrN/CrCN/TaN multilayer coatings exhibited good adhesion properties on the CoCrMo alloy substrate. A very high hardness value of 60 GPa was obtained for 8 multilayered coating. As a result of the pin-on-disc wear tests, it was found that the tribological properties of the CoCrMo alloy were enhanced by coating its surface with this architecture by using close-field unbalanced magnetron system with used parameters.

Friction and Wear Performance of Epoxy Resin Reinforced With Boron Nitride Nanoplatelets

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Mürsel Ekrem ◽  
Hayrettin Düzcükoğlu ◽  
Muhammet Ali Şenyurt ◽  
Ömer Sinan Şahin ◽  
Ahmet Avcı
Keyword(s):  
Mechanical Properties ◽  
Heat Conduction ◽  
Boron Nitride ◽  
Epoxy Resin ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Wear Performance ◽  
Friction And Wear Behavior ◽  
Pin On Disk ◽  
Disk Test

In this study, the effects of addition of boron nitride nanoplatelets (BNNPs) upon friction and wear behavior of epoxy resin have been investigated by using pin-on-disk test. It has been reported in the literature that certain amounts of BNNP addition can be useful for enhancement of mechanical properties. Therefore, it is very important to obtain the effect of such addition upon friction and wear performance of epoxy resin. BNNPs have been incorporated at 0.3–0.5–0.7–1 wt %. It is shown that BNNP addition results in decrease in friction coefficient and wear. It is also shown that the best results are obtained with 0.5% nanoplatelet addition. It is also observed that heat conduction of epoxy resin is enhanced by the nanoplatelet addition.

Effect of fiber type, fiber content, and compatibilizer on two-body abrasive wear performance of HDPE matrix composites

2019 ◽  
Vol 53 (19) ◽  
pp. 2743-2760
Author(s):  
Soner Savaş ◽  
Nurlan Gurbanov ◽  
Mehmet Doğan
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Fiber Type ◽  
Basalt Fiber ◽  
Point Of View ◽  
Vacuum System ◽  
Wear Properties ◽  
Fiber Concentration ◽  
Wear Rates ◽  
Pin On Disc

This study puts forth the synergistic effect of fiber concentration and maleic anhydride-grafted polyethylene (PE-g-MA) compatibilization on the abrasive wear properties of high-density polyethylene (HDPE) composites. Composites including carbon, basalt, jute and coconut short fibers with different weight ratios were processed by melt blending and then tested by using a pin-on-disc abrasive wear tester in dry sliding conditions. The test rig was also equipped with a vacuum system, for the first time, to promote two-body abrasive wear of the composites by reducing the wear debris which may be trapped in the wear track and alter the wear properties. In addition, fiber and coupling agent concentrations and test parameters were investigated using L16 full-factorial experimental design and the relationships between these parameters and wear behaviors of the composites were analyzed on the basis of the findings. This work clearly shows that high rigidity obtained by fiber contribution was not beneficial from the abrasive wear resistance point of view, due to repeated plowing effect of the counterpart material under the test conditions. Nevertheless, basalt fiber-reinforced composites showed higher wear resistance than other composites. Except for coconut fibers, PE-g-MA exhibited good miscibility between fibers and matrix, and thus an enhancing effect on the hardness values, and also wear resistance of the samples. Briefly, the rigidity and miscibility of the composites were found in balance for optimum wear rates.

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