Study on Wear Mode of Silicon Nitride Balls in Lapping Process

To understand the mechanism involved in the lapping process of the silicon nitride balls, the wear mode is investigated in this paper. The abrasion tests were performed on a ball-plate wear test apparatus with different loads (0~2N/ball) and slurry concentrations (5%wt~30%wt W20 B4C3). The abraded surface is observed by optical telescope. A wear-mode map, which defines the regimes for two-body abrasion or three-body abrasion dominating in the micro-scale abrasion test, is plotted with two axes: load and concentration of abrasive. An empirical formula for the wear mode transition is adopted to calculate the transition point S*, which can then used to predict the wear mode in lapping process of silicon nitride ball.

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The response of two-wheeler tires to three-body wear phenomena by experimental simulation of off-road terrains

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1177/0954407018825062 ◽

2019 ◽

Vol 233 (13) ◽

pp. 3504-3514

Author(s):

Dayananda Pai ◽

Anand Pai ◽

Saahil Kumar ◽

Anubhav Deb

Keyword(s):

Numerical Model ◽

Abrasive Wear ◽

Wear Behavior ◽

Wear Test ◽

Experimental Simulation ◽

Test Apparatus ◽

Road Roughness ◽

Abrasive Wear Behavior ◽

Three Body ◽

Two Wheeler

The operation of two wheelers frequently encounters off-road terrain comprising loose particles of sand and soil, which setup three-body abrasive wear phenomena affecting the tire life. To evaluate the response of two-wheeler tires on such terrains, the dry abrasive wear behavior of two-wheeler tires was experimentally determined using a three-body wear test apparatus. Three different mixtures of sand and granite dust of varying grit size, 100, 200, and 300 µm, were employed to represent the abrasive cluster, typical of the varying roughness on off-road terrains. Taguchi’s L27 (33) orthogonal array was applied to analyze the specific wear rate as a response to three parameters—load, speed, and road roughness—separately for front and rear two-wheeler tires. Variation of hardness and wear pattern observation for the front and rear tires were carried out to oversee the surface deterioration. A numerical model based on abrasive grit-tire surface interaction was developed for comparison with the experimental results.

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An Investigation of the Thermal Sprayed Molybdenum Coatings Behaviour to Micro-Abrasion Wear

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.841.15 ◽

2016 ◽

Vol 841 ◽

pp. 15-20

Author(s):

Gheorghe Matache ◽

Alexandru Paraschiv ◽

Cristian Puscasu

Keyword(s):

Experimental Data ◽

Wear Rate ◽

Electric Arc ◽

Wear Testing ◽

Wear Behaviour ◽

Small Scale ◽

Wear Rates ◽

Wear Mode ◽

Three Body Abrasion ◽

Three Body

The wear behaviour of thick molybdenum coatings deposited by electric arc thermal spray on steel support was investigated by micro-abrasion, a relatively recent introduced method for small scale wear testing. The wear mechanisms and wear rates without coatings penetration were investigated with respect of time corresponding to primary and secondary wear stages. The micro-abrasion of Mo coatings using SiC abrasive slurry have been discussed and wear scar characteristics were evaluated based on the experimentally results. The worn surfaces of the tested specimen were examined by SEM and the specific wear rate was calculated from experimental data. For the testing durations used it was identified the change from grooving to rolling wear corresponding to the transition of wear mode from two-body to three body-abrasion.

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Three-Body Abrasion Study of a Dynamic Seal by a Micro-Scale Abrasion Test under Lubricated Conditions

10.4271/2016-01-0496 ◽

2016 ◽

Cited By ~ 3

Author(s):

Leonardo Farfan-Cabrera ◽

Ezequiel A. Gallardo

Keyword(s):

Abrasion Test ◽

Micro Scale ◽

Dynamic Seal ◽

Three Body Abrasion ◽

Three Body

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Tribological Properties of Calotropis Procera Natural Fiber Reinforced Hybrid Epoxy Composites

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.895.45 ◽

2019 ◽

Vol 895 ◽

pp. 45-51

Author(s):

M.J. Raghu ◽

Govardhan Goud

Keyword(s):

Abrasive Wear ◽

Glass Fibre ◽

Sliding Wear ◽

Natural Fiber ◽

Wear Test ◽

Calotropis Procera ◽

Dry Sliding Wear ◽

Wear Loss ◽

Fiber Reinforced ◽

Three Body

Natural fibers are widely used for reinforcement in polymer composite materials and proved to be effectively replacing synthetic fiber reinforced polymer composites to some extent in applications like domestic, automotive and lower end aerospace parts. The natural fiber reinforced composites are environment friendly, have high strength to weight ratio as well as specific strengths comparable with synthetic glass fiber reinforced composites. In the present work, hybrid epoxy composites were fabricated using calotropis procera and glass fibers as reinforcement by hand lay-up method. The fibre reinforcement in epoxy matrix was maintained at 20 wt%. In 20 wt% reinforcement of fibre, the content of calotropis procera and glass fibre were varied from 5, 10, 15 and 20 wt%. The dry sliding wear test as per ASTM G99 and three body abrasive wear test as per ASTM G65 were conducted to find the tribological properties by varying speed, load, distance and abrasive size. The hybrid composite having 5 wt% calotropis procera and 15 wt% glass fibre showed less wear loss in hybrid composites both in sliding wear test as well as in abrasive wear test which is comparable with 20 wt% glass fibre reinforced epoxy composite which marked very low wear loss. The SEM analysis was carried out to study the worn out surfaces of dry sliding wear test and three body abrasive wear test specimens.

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Wear and Frictional Behaviour of Metals

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.893.430 ◽

2014 ◽

Vol 893 ◽

pp. 430-435

Author(s):

J.G. Alotaibi ◽

B.F. Yousif ◽

T.F. Yusaf

Keyword(s):

Stainless Steel ◽

Thermal Loading ◽

Operating Parameters ◽

Thermal Imager ◽

Contact Conditions ◽

Dry Contact ◽

Three Body Abrasion ◽

Three Body ◽

Worn Surface ◽

Frictional Behaviour

In the current study, wear and frictional performances of different metals are investigated under different operating parameters against stainless steel counterface under dry contact conditions. The experiments performed using block on ring machine. Microscopy was used to examine the damage features on the worn surface and categorize the wear mechanism. Thermal imager was used to understand the thermal loading in the interface during the rubbing process. The results revealed that the operating parameters influence the wear and frictional behaviour of all the metals. Brass metal exhibited better wear and frictional behaviour compared to others. Three different wear mechanisms were observed, i.e. two body abrasion (Brass), three body abrasion (Aluminium) and adhesive (Mild Steel).

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