Browsing by Author "Priya, I.M."

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Effect of blending duration on physical, mechanical and tribological behavior of aluminum matrix composites: An experimental analysis
(Elsevier Ltd, 2024) Veeranaath, V.; Sahu, R.K.; Priya, I.M.
Aluminum matrix composites exhibit a vibrant role in the present research and scientific world due to their astonishing features compared to other conventional materials. Among the various techniques available for processing these composites, powder metallurgy (P/M) is considered one of the prominent techniques. This is because of its identical dispersal of the fillers, near net shape samples, etc. wherein blending is the most imperative step of the process. To accomplish efficient blending of the phases for composite preparation, ball milling is found to be suitable. In this paper, aluminum matrix composites filled with 20 wt% novel reinforcement (extracted from Aegle marmelos) is synthesized via the P/M technique by varying the blending duration from 60 to 240 min to study its effect on the behavior of composites. The mixing of the constituents is carried out at 300 rpm with a ball-to-powder ratio of 10:1 in ball milling. The blended powders were then compacted and sintered in an inert gas atmosphere for consolidation. The hardness, density, and wear tests were conducted to characterize the developed composite specimens. The microstructural characterization was carried out using an optical microscope and SEM, and the elemental composition of the synthesized composite was studied using EDS techniques. The hardness and density were found to have a growing influence up to a ball milling duration of 180 min and beyond this time there is found to be a decrement in the characteristics of the composites. This is due to the damage of the reinforcements observed during lengthier ball milling duration. The wear behavior of the fabricated specimens followed the same trend. Further, grey relational analysis was adopted in this study to determine the degree of relationship between the blending duration and the composites' behavioral performance. Â© Â© 2024 Elsevier Ltd. All rights reserved.
Experimental and computational studies on characteristics of indigenously produced novel Aegle marmelos micro polymer reinforced aluminum composites using powder metallurgy
(Korean Society of Mechanical Engineers, 2025) Veeranaath, V.; Sahu, R.K.; Priya, I.M.
In recent times, the quest for an advanced composite material (polymer reinforcement in metal matrix) has become a challenge for promising industrial and household applications. Therefore, the present study focuses on the indigenous production of a novel microparticle-based Aegle marmelos natural polymer reinforced (AMNPR) aluminum composites using the powder metallurgy (P/M) technique. The results revealed that the reinforcement (AMNP) concentration had a considerable effect on the physico-mechanical, thermal, and chemical characteristics of composites. Further, in this study, TOPSIS coupled with the CRITIC method (CRITIC-TOPSIS) is adopted to convert the multiple characteristics into a closeness coefficient (Ci) response. The optimal parameters are found to be reinforcement - 20 wt. %, ball milling duration - 180 min, and speed - 300 rpm. Moreover, the Ci values predicted by the artificial neural network (ANN) model are in good agreement with the experimental values having a mean absolute error of 4.116 %. © The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2025.
Influence of In-house Synthesized Micro-Aegle Marmelos Polymer Concentration on Physico-Mechanical Properties of Aluminum-Based Composites
(Springer Nature, 2025) Veeranaath, V.; Sahu, R.K.; Priya, I.M.
For lightweight applications such as aircraft, automotive components, household, and infrastructure applications, using natural polymer fillers as reinforcement in aluminum metal matrix composites (MMCs) instead of metallic and ceramic fillers could be an attractive candidate. Therefore, the present work newly investigated the synthesis of Aegle Marmelos polymer powders (AMP) via a chemical route, followed by the fabrication of AMP-reinforced aluminum MMCs by the powder metallurgy (P/M) technique. The AMP concentration is increased in increments of 5% by weight up to 35%. The SEM results showed that the fillers are homogeneously distributed in the matrix and the bonding between them is improved. The mechanical characterization results showed that at an AMP concentration of 20 wt%, the density, hardness, and tensile strength were increased by 13%, 6.35%, and 44%, respectively, compared to the base material. In addition, a wear test is performed on the synthesized composites and the responses such as coefficient of friction and specific wear rate are individually optimized using the Taguchi approach. The common optimal parameters for the minimum coefficient of friction (0.3832) and the specific wear rate (7.83 × 10?5 mm3/Nm) are 20 wt% AMP reinforcement, sliding load 20 N, disk speed 550 rpm, and sliding time 5 min. The results of the confirmatory wear test showed that the difference between Taguchi's predicted and experimental response values ??is less than 9%. Analysis of variance results also showed that AMP reinforcement is the most significant parameter. Overall, Al-20 wt% AMP composites exhibited improved physico-mechanical properties for promising applications. © King Fahd University of Petroleum & Minerals 2024.
Influence of Process Parameters and its Optimization on Wear Behavior of an Exceptional Aegle Marmelos Polymer/Aluminum Composite
(Springer, 2024) Veeranaath, V.; Sahu, R.K.; Priya, I.M.
The present paper is focused on the indigenous production of a unique and low-cost Aegle Marmelos natural polymer (AMNP) powder via chemical synthesis and its reinforcement in the aluminum matrix via powder metallurgy. The wear behavior of Aegle Marmelos natural polymer-reinforced (AMNPR) aluminum composites is studied. The effect of control parameters like reinforcement (wt.%) and different sliding parameters on the wear characteristics is discussed. The SEM studies revealed that severe damage due to adhesive wear, delamination, and formation of oxide zones is observed at reinforcement concentrations of 10 wt.% and 15 wt.%. The optical profilometry study also revealed that the roughness of the worn-out samples was maximum at 10 wt.% reinforcement. Further, the process parameters with each characteristic are optimized individually and the optimal parameters are different. To avoid this confounding effect, TOPSIS coupled with CRITIC method is adopted to convert all characteristics into a closeness coefficient (Ci) and optimize at a common parameter level setting. The optimal combination of process parameters for minimum wear characteristics is as follows: reinforcement concentration: 20 wt.%, sliding load: 25 N, sliding speed: 200 rpm, and sliding duration: 4 min. The confirmation test results were validated and showed an improvement of the closeness coefficient by 0.0116. In this study, a statistical multi-regression model is also developed for predicting the closeness coefficient of the developed composites under different parametric conditions. The predicted values obtained from the regression model agreed well with the experimental values, with a mean absolute error of 5.478%. © ASM International 2024.