Statistical Analysis of Tribological Properties of Aluminum Matrix Composites Using Full Factorial Design

2015 ◽  
Vol 68 (S1) ◽  
pp. 53-57 ◽  
Author(s):  
V. V. Monikandan ◽  
Jibin C. Jacob ◽  
M. A. Joseph ◽  
P. K. Rajendrakumar
Keyword(s):  
Statistical Analysis ◽  
Factorial Design ◽  
Tribological Properties ◽  
Aluminum Matrix ◽  
Full Factorial Design ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Full Factorial

Case study: Statistical analysis of eurycomanone yield using a full factorial design

2013 ◽  
pp. 43-54
Author(s):  
Azila Abdul-Aziz ◽  
Harisun Yaakob ◽  
Ramlan Aziz ◽  
Roshanida Abdul Rahman ◽  
Sulaiman Ngadiran ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Factorial Design ◽  
Full Factorial Design ◽  
Full Factorial

Dry sliding tribological properties of A356-SiCP aluminum matrix composites prepared by vacuum stir casting

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jiaqi Pan ◽  
Xiaoshan Liu ◽  
Guoqiu He ◽  
Bin Ge ◽  
Peiwen Le ◽  
...  
Keyword(s):  
Wear Rate ◽  
Tribological Properties ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Particle Content ◽  
Sliding Speed ◽  
Content Type ◽  
Casting Technique

Purpose The purpose of this paper is to understand the effect of particle content, applied load and sliding speed on the tribological properties of A356-SiCP composites manufactured using a newly developed vacuum stir casting technique. Design/methodology/approach A356 alloy reinforced with 10, 15 and 20 vol% SiC particles was prepared by vacuum stir casting. Tribological tests were carried out on block-on-ring tribometer under dry sliding conditions, room temperature. Wear mechanism was investigated by scanning electron microscope and energy dispersion spectrum. Findings SiCP is homogeneously dispersed in the matrix. The increase in SiCP content decrease wear rate, but it leads to an increase in coefficient of friction. The wear rate increase and friction coefficient present different variation trends with increasing load. For A356-20%SiCP composite, when the load is less than 10 MPa, wear rate and friction coefficient under sliding speed of 400 rpm are lower than those of 200 rpm. Wear mechanism transition from abrasion, oxidation, delamination, adhesion to plastic flow as load and sliding speed increasing. Practical implications Results of this study will help guide the use of A356-SiCP in many automotive products such as brake rotors, brake pads, brake drums and pistons. Originality/value There are few paper studies the effect of particle content, applied load and sliding speed on the tribological properties of A356-SiCP composites. Aluminum matrix composites with uniform distribution of reinforcing particles were successfully prepared by using the newly developed vacuum stir casting technique.

Case study: Statistical analysis of eurycomanone yield using a full factorial design

2013 ◽  
pp. 43-54
Author(s):  
Azila Abdul-Aziz ◽  
Harisun Yaakob ◽  
Ramlan Aziz ◽  
Roshanida Abdul Rahman ◽  
Sulaiman Ngadiran ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Factorial Design ◽  
Full Factorial Design ◽  
Full Factorial

scholarly journals Characteristics of the Surface Topography and Tribological Properties of Reinforced Aluminum Matrix Composite

Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 358
Author(s):  
Magdalena Niemczewska-Wójcik ◽  
Manickaraj Pethuraj ◽  
Marimuthu Uthayakumar ◽  
Mohd Shukry Abdul Majid
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Surface Topography ◽  
Tribological Properties ◽  
Aluminum Matrix ◽  
Wear Intensity ◽  
Tribological Characteristics ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Tribological Tests

Due to their excellent synergistic properties, Aluminum Matrix Composites (AMC) have achieved a high degree of prominence in different industries. In addition to strength, the wear resistance of materials is also an important criterion for numerous applications. The wear resistance depends on the surface topography as well as the working conditions of the interacting parts. Therefore, extensive experiments are being conducted to improve the suitability of engineering materials (including AMC) for different applications. This paper presents research on manufactured aluminum metal matrix composites reinforced with 10 wt.% of Al2SiO5 (aluminum sillimanite). The manufactured and prepared samples were subjected to surface topography measurements and to tribological studies both with and without lubricant using a block-on-ring tester. Based on the results, analyses of the surface topography (i.e., surface roughness parameters, Abbott–Firestone curve, and surface defects) as well as of the tribological characteristics (i.a. friction coefficient, linear wear, and wear intensity) were performed. Differences in the surface topography of the manufactured elements were shown. The surface topography had a significant impact on tribological characteristics of the sliding joints in the tests where lubrication was and was not used. Better tribological characteristics were obtained for the surfaces characterized by greater roughness (determined on the basis of both the profile and surface texture parameters). In the case of tribological tests with lubrication, the friction coefficient as well as the wear intensity was significantly lower compared to tribological tests without lubrication. However, lower values of the friction coefficient and wear intensity were still recorded for the surfaces that were characterized by greater roughness. The obtained results showed that it is important to analyze the surface topography because surface characteristics influence tribological properties.

scholarly journals On prefermentative maceration techniques: statistical analysis of sensory descriptors in Sangiovese wine

2016 ◽  
Vol 53 (1) ◽  
pp. 1-20
Author(s):  
Alessandro Magrini ◽  
Ottorino L. Pantani ◽  
Alessandra Biondi Bartolini ◽  
Federico M. Stefanini
Keyword(s):  
Statistical Analysis ◽  
Factorial Design ◽  
Analysis Of Variance ◽  
Mixed Models ◽  
Full Factorial Design ◽  
Sensory Profile ◽  
Ordinal Scale ◽  
Wine Making ◽  
Fundamental Step ◽  
Full Factorial

SummaryThe analysis of wine sensory descriptors is a fundamental step in the improvement of wine making, because the procedures are judged just before bottled wine is ready for consumption. Despite several contributions in the literature, traditional analysis of variance methods are not adequate to analyse sensory descriptors, because they are defined on ordinal scales. In this paper, we exploit cumulative link mixed models in a three-way full factorial design to assess the effect of prefermentative maceration, temperature and saignée on wine sensory descriptors. Using cumulative link mixed models, the bias introduced by assessors’ judgement and the ordinal scale of sensory descriptors are taken into account. The results were the following: the application of prefermentative maceration techniques did not lead to an improvement in the sensory profile of wines after a year from bottling; wines treated with saignée showed greater intensity in olfactive descriptors; and higher fermentation temperatures resulted in wines that were generally more concentrated.

Ultra-high frequency induction and conventional sintering of Al-SiO2 composites: A comparative study

2020 ◽  
Vol 62 (10) ◽  
pp. 1048-1054
Author(s):  
Uğur Ç Çavdar ◽  
Burak Gül ◽  
Levent Ulvi Gezici ◽  
Mehmet Ayvaz
Keyword(s):  
Tribological Properties ◽  
High Frequency ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Sintering Process ◽  
Conventional Sintering ◽  
Pin On Disc ◽  
Sintering Method ◽  
High Frequency Induction

Abstract In this study, it was aimed to determine and compare the sinterability of aluminum-SiO2 composites by conventional and fast sintering methods and to examine their tribological properties after the sintering process. For this purpose, 1, 3, 5, 9, and 15 wt.-% SiO2 reinforced aluminum matrix composites were sintered by a conventional and induction sintering method at 600 °C after uniaxial cold pressing under 200 MPa pressure. The sintering was performed for 30 minutes for the traditional method and 5 minutes for induction sintering. After the sintering, the microstructures of the samples were examined, and their sintered densities and hardness were determined. In addition, the tribological properties of the samples were investigated by the pin-on-disc method, and the worn surfaces were examined after the tests.

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