Erosion wear behaviour of A357/fly ash composites

2021 ◽  
pp. 135065012110191
Author(s):  
Tanusree Bera ◽  
Ved Prakash ◽  
Samir K Acharya
Keyword(s):  
Fly Ash ◽  
Impact Velocity ◽  
Abrasive Particle ◽  
Wear Behaviour ◽  
Erosion Wear ◽  
Impingement Angle ◽  
Weight Percentage ◽  
Casting Technique ◽  
Impact Angles ◽  
The Impact

In this article, a new metal–matrix composite was developed with fly ash (an industrial waste from petroleum industries) as reinforcement and aluminium metal (A357) as a matrix by squeeze casting technique. This study was concentrated on the processing of the composites with different weight percentage ranging from 0 to 10 wt.% in a step of 2.5 each and also reported the erosion wear behaviour. Solid particle erosion of A357/fly ash composites was carried out with four velocities (48, 70, 82 and 109 m/s), at impact angles (30°, 45°, 60° and 90°), with silica as an abrasive particle at ambient temperature. The eroded surfaces were analysed by scanning electron microscopy. The results revealed that the impact velocity and impingement angle both affected the erosion wear behaviour of the composites. The erosion rate rises with an increase in impact velocity, irrespective of the change in impingement angle and weight percentage of the fly ash. The erosion mechanism studied for the composites is microploughing and microcutting.

Adhesive Wear Behaviour of Aluminium Alloy / Fly Ash Composites

2012 ◽  
Vol 622-623 ◽  
pp. 1290-1294 ◽  
Author(s):  
Prakash J. Udaya ◽  
T.V. Moorthy
Keyword(s):  
Fly Ash ◽  
Aluminium Alloy ◽  
Adhesive Wear ◽  
Matrix Material ◽  
Research Work ◽  
Wear Behaviour ◽  
Weight Percentage ◽  
Casting Technique ◽  
The Matrix ◽  
Measuring Machine

The aim of this research work is to study the influence of wear parameters on the adhesive wear behaviour of aluminium matrix composites (AMCs). It consists of A413 aluminium alloy as the matrix material and particulate fly ash of 3%, 6% and 9% by weight as the reinforcement material. Stir casting technique was used to fabricate the AMCs. The distribution of the fly ash particles in the matrix phase was investigated using the SEM image. The wear tests have been carried out using a pin on disc machine according to the ASTM G99 – 05 specifications. Wear surfaces were analysed using the images captured through Video measuring machine. It was found that load has the highest influence on wear rate followed by sliding distance, sliding speed, and weight percentage of reinforcement.

Study on the Erosion Wear Behaviors of the PMMA Plates Impacted by Air Flow Containing Sands

2013 ◽  
Vol 631-632 ◽  
pp. 366-370
Author(s):  
Ting Xie ◽  
Gang Liu ◽  
Peng Fei Wang ◽  
Yan Guo Yin
Keyword(s):  
Impact Velocity ◽  
Impact Angle ◽  
Erosion Wear ◽  
Micro Cutting ◽  
Erosion Mechanism ◽  
Erosion Mechanisms ◽  
Impact Angles ◽  
The Impact ◽  
Erosion Volume ◽  
Sand Size

The polymethymethacrylate (PMMA) plate was adopted as the test samples. The effects of impact angle, impact velocity, sand size on the erosion wear of the PMMA plates were experimentally investigated. The erosion mechanisms were also analyzed. The results showed that, the erosion volume increased nonlinearly with the increase of impact velocity, the inflection point appeared at around 13 m/s, and then the erosion volume increased rapidly. The erosion volume decreased nonlinearly as the impact angle increased. In our experiments, under the impact angle less than 60°, the smaller sand size could result in higher erosion wear. However, at 90°, the erosion volume by larger sands produced higher erosion. In fact, the erosion mechanism depends on the impact angle, at small impact angles, the main erosion mechanism is micro-cutting, and the erosion mechanism will mainly be impacting fatigue at large impact angles. At the medium impact angles, the erosion mechanism is the combination of the micro-cutting and impacting.

Analytical Study of the Oblique Impact of a Rod with a Flat Using an Elasto-Plastic Contact Model

2015 ◽  
Vol 801 ◽  
pp. 25-32
Author(s):  
Ozdes Cermik ◽  
Hamid Ghaednia ◽  
Dan B. Marghitu
Keyword(s):  
Impact Velocity ◽  
Contact Force ◽  
Analytical Study ◽  
Initial Conditions ◽  
Permanent Deformation ◽  
Oblique Impact ◽  
Coefficient Of Restitution ◽  
Contact Model ◽  
Impact Angles ◽  
The Impact

In the current study a flattening contact model, combined with a permanent deformation expression, has been analyzed for the oblique impact case. The model has been simulated for different initial conditions using MATLAB. The initial impact velocity used for the simulations ranges from 0.5 to 3 m/s. The results are compared theoretically for four different impact angles including 20, 45, 70, and 90 degrees. The contact force, the linear and the angular motion, the permanent deformation, and the coefficient of restitution have been analyzed. It is assumed that sliding occurs throughout the impact.

Effect of erosive parameters on solid particle erosion of cotton fiber–based nonwoven mat/wooden dust reinforced hybrid polymer composites

2021 ◽  
pp. 152808372110642
Author(s):  
Sachin Tejyan
Keyword(s):  
Solid Particle ◽  
Impact Velocity ◽  
Cotton Fiber ◽  
Polymeric Composites ◽  
Solid Particle Erosion ◽  
Erosion Wear ◽  
Impingement Angle ◽  
Particle Erosion ◽  
Fiber Loading ◽  
Wide Range

Abrasive particle-induced erosive wear of polymeric engineering components is a major industrial issue. The research of solid particle erosion characteristics of polymeric composites becomes essential due to operational needs in dusty conditions. Nonwovens are now employed in industrial applications for polymeric composites. Nonwoven products are made from a wide range of raw materials, ranging from synthetic to natural fibers. This work finding the effect of nonwoven cotton fiber (5, 10, and 15 wt.%) loading on the physical, mechanical, and erosion wear of fixed wooden dust (4 wt.%) filled hybrid epoxy composites. Experimental results reveal improved impact strength, hardness, and compressive and tensile strength with an increment of fiber loading from 5–15 wt.%. The density of the composites was found to increase, whereas void content decreases with an increase in cotton fiber. The erosion wear of the composites has been studied using an L27 orthogonal array to assess the effects of various parameters such as fiber loading, erodent size, impact velocity, impingement angle, and stand-off distance. The erosion wear increased with impact velocity and remained highest for 60° of impingement angle. The most significant parameter affecting the erosion wear was determined as impact velocity followed by impingement angle. Surface morphologies of eroded samples reveal the fiber pull-out, and fiber breakage was the prominent phenomenon for the erosion wear of the evaluated composites.

scholarly journals Effect of Silicon Addition on High-Temperature Solid Particle Erosion-Wear Behaviour of Mullite-SiC Composite Refractories Prepared by Nitriding Reactive

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Xiaochao Li ◽  
Shusen Chen ◽  
Zhaohui Huang ◽  
Minghao Fang ◽  
Yan’gai Liu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Solid Particle ◽  
Elevated Temperatures ◽  
Silicon Powder ◽  
Wear Behaviour ◽  
Solid Particle Erosion ◽  
Erosion Wear ◽  
Particle Erosion ◽  
Powder Addition ◽  
The Impact

Solid particle erosion-wear experiments on as-prepared mullite-SiC composite refractories by nitriding reactive sintering were performed at elevated temperatures, using sharp black SiC abrasive particles at an impact speed of 50 m/s and the impact angle of 90° in the air atmosphere. The effects of silicon powder addition and erosion temperature on the erosion-wear resistance of mullite-SiC composite refractories were studied. The test results reveal that Si powders caused nitriding reaction to formβ-sialon whiskers in the matrix of mullite-SiC composite refractories. The erosion-wear resistance of mullite-SiC composite refractories was improved with the increase of silicon powder addition and erosion temperature, and the minimum volume erosion rate was under the condition of 12% silicon added and a temperature of 1400°C. The major erosion-wear mechanisms of mullite-SiC composite refractories were brittle erosion at the erosion temperature from room temperature to 1000°C and then plastic deformation from 1200°C to 1400°C.

Design and Performance of Slurry Erosion Tester

2010 ◽  
Vol 132 (2) ◽  
Author(s):  
A. Abouel-Kasem ◽  
Y. M. Abd-elrhman ◽  
K. M. Emara ◽  
S. M. Ahmed
Keyword(s):  
Impact Velocity ◽  
Erosion Rate ◽  
Sample Surface ◽  
Erosion Process ◽  
Impingement Angle ◽  
Slurry Erosion ◽  
Erosion Test ◽  
And Performance ◽  
Paint Removal ◽  
The Impact

A slurry whirling arm erosion test ring was constructed and a series of erosion tests and post-erosion analysis were carried out using a paint erosion indication technique. The pattern of the paint removal presented a highly visual and accelerated map for the erosion process and its behavior. Also, the erosion rate of paint removal was investigated under a number of erosion variables. It was observed that the rebounding of the erodent particles from the sample surface play an important role in developing erosion for this tester. The erosion pattern showed that the effect of the rebound particles depends on the impact velocity and impingement angle. It was also observed that the erosion behavior of paint as a function of impingement angle, impact velocity, and erosion time was similar to that reported in literature for engineering materials. The slurry whirling arm erosion tester seems to be promising for simulating the slurry process in real cases.

Physico-mechanical and erosive wear analysis of polyester fibre-based nonwoven fabric-reinforced polymer composites

2018 ◽  
Vol 49 (4) ◽  
pp. 447-464 ◽  
Author(s):  
Sachin Tejyan ◽  
Tej Singh ◽  
Amar Patnaik ◽  
Gusztáv Fekete ◽  
Brijesh Gangil
Keyword(s):  
Impact Velocity ◽  
Polyester Fibre ◽  
Research Work ◽  
Erosive Wear ◽  
Nonwoven Fabric ◽  
Fibre Content ◽  
Epoxy Composites ◽  
Wear Behaviour ◽  
Air Jet ◽  
The Impact

The research work aims to study the physico-mechanical and erosive wear behaviour of polyester fibre-based needle-punched nonwoven fabric mat reinforced epoxy composites. Therefore, the epoxy composites with varying proportion of polyester fibre-based needle-punched nonwoven fabric mat were fabricated and characterized for their physical, mechanical and erosive wear properties. The experimental results indicated that the increase of fibre content enhanced the physical and mechanical properties of the composites. To optimize and improve the erosive wear performance of fabricated composites, the Taguchi method was implemented. For this, L27 orthogonal array was constructed to examine the influence of the five control factors including impingement angle, impact velocity, stand-off distance, fibre content and erodent size. The experimental schedule was carried out in an air jet erosion test rig. The results indicate that the impact velocity emerges as the most significant control factor affecting the erosive wear of fabricated composites. Finally, the possible erosive wear mechanisms were studied by examining the composites eroded surfaces with scanning electron microscopy.

Erosion and its Effect on a Water-Cooled Turbine

1978 ◽  
Author(s):  
Max Freedman
Keyword(s):  
Impact Velocity ◽  
Gas Turbines ◽  
Mass Loss Rate ◽  
Impact Angle ◽  
Aluminum Specimen ◽  
High Impact Velocity ◽  
Short Time ◽  
Impact Angles ◽  
The Impact

Erosion tests were run to obtain data for designing a water-cooled gas turbine collection shroud. All tests utilized a coherent stream of water ejected from a static nozzle against stationary small block specimens. Twenty-one tests were run with aluminum specimens and 16 more tests with other materials. The impact velocity was varied from 165 to 270 m/s (540 to 890 fps). The impact angle was varied from 10 to 90 deg. The mass loss rate results generally show four erosion regions, which are consistent with the literature. A correlation between regions two and four was found. Aluminum specimen erosion rate was found to be unexpectedly high with impact angles of 10 deg and moderate-to-high impact velocity. No report of previous liquid erosion work at impact angles less than 30 deg was found; since it is expected that water-cooled gas turbines will operate at impact angles of about 15 deg, erosion in this low impact angle region should be studied. If the correlation between erosion regions two and four can be quantized, then very short-time tests could be used to predict long-term erosion at minimal cost.

Effect of the amount of SiC, number of strokes, and applied load on the reciprocating wear behavior of Al-SiC composites

2015 ◽  
Vol 22 (5) ◽  
Author(s):  
Jayakumar Lakshmipathy ◽  
Balamurugan Kulendran
Keyword(s):  
Wear Behavior ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Weight Percentage ◽  
Casting Technique ◽  
The Matrix ◽  
The Coefficient Of Friction ◽  
Sic Composites ◽  
The Impact ◽  
Sic Particle

AbstractThe wear behavior of Al/SiC composites prepared by stir casting technique is investigated to find out the effects of the weight percentage of SiC, load, and the number of strokes on a shaper machine. Metal matrix composite (MMC) pins are prepared with different weight percentages of SiC (10%, 15%, and 20%). The tests are carried out with different load conditions (25, 50 and 75 N) and different number of strokes (420,780 and 1605 strokes). Wear surfaces of tested samples are examined in scanning electron microscope (SEM). Hardness and impact tests are also carried out on the MMC samples. The experimental results show that the hardness of composites increases with an increase in SiC particle, and the impact strength decreases with increase in SiC content. The volume loss of MMC specimens are less than that of the matrix alloy. Moreover, the temperature rise near the contact surface of the MMC specimens increases with increase in wt% of SiC, load, and number of strokes. The coefficient of friction decreases with increase in load and the number of strokes.

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