On the Optimal Design of Metal Matrix Composites as Functionally Graded Innovative Materials for Sensor Devices

2019 ◽  
Vol 826 ◽  
pp. 45-54
Author(s):  
Narinder Singh ◽  
Rupinder Singh ◽  
Inderpreet Singh Ahuja ◽  
Ilenia Farina
Keyword(s):  
Metal Matrix Composites ◽  
Investment Casting ◽  
Metal Matrix ◽  
Research Work ◽  
Functionally Graded ◽  
Fused Deposition Modelling ◽  
Matrix Composites ◽  
Fused Deposition ◽  
Sensor Devices ◽  
Innovative Materials

In the present work an effort has been made to prepare Al matrix composite by 3D printing assisted rapid investment casting (RIC). The RIC has been performed by using patterns prepared by fused deposition modelling (FDM). For preparation of 3D parts, a composite material reinforced with ceramic particles (SiC and Al2O3) has been used as filament wire. The main motive of this research work is to prepare metal matrix composites as functionally graded innovative materials (FGIM), via investment casting as functional prototypes which will have wear resistance properties of SiC and Al2O3 (especially in rapid tooling (RT) applications. The reinforcements in the RT (as functional prototype) have been ensured by SEM analysis. The potential of the analysed materials for the fabrication of novel sensor devices is highlighted. Also the functional prototypes were checked for process capability analysis for batch production

scholarly journals Structural Characterization and Dielectric Properties of the Effect of Carbon Nanotubes and Silicon on AA2024 Metal Matrix Composites

2021 ◽  
Author(s):  
Muniyappan Mani ◽  
Iyandurai Natesan
Keyword(s):  
Carbon Nanotubes ◽  
Dielectric Properties ◽  
Metal Matrix Composites ◽  
Structural Characterization ◽  
Metal Matrix ◽  
Research Work ◽  
Dissipation Factor ◽  
Stir Casting ◽  
Matrix Composites ◽  
Aa 2024

Abstract This research work focus on the formation of AA2024-carbon nanotubes-silicon hybrid metal matrixcomposites. Structure morphology, structural characterization, elemental identification and dielectric properties of AA 2024 in the presence of carbon nanotubes, silicon andits combinations at various proportions was evaluated using SEM, XRD, EDX and Hioki 3532-50 LCR Hi-Tester. A two-stage stir casting method was used for the fabrication of AA2024 hybrid metal matrix composites. It was observed that the size of the AA 2024 + 4% CNT + 2% Si composite wasfound to be 23.6 nm, this shows enhanced results than other composites prepared. Dielectric properties of composites were characterized as a function of composition and frequency. It was found that the dielectric constant, dielectric loss and dissipation factor decreases smoothly with an increase of reinforcements and also frequency.

scholarly journals Process parameter optimization of Al/SiC metal matrix composites during ultrasonic machining process

2021 ◽  
Vol 309 ◽  
pp. 01156
Author(s):  
Bikash Banerjee ◽  
Arindam Chakraborty ◽  
Somnath Das ◽  
Debabrata Dhupal
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Removal Rate ◽  
Optimization Technique ◽  
Research Work ◽  
Machining Process ◽  
Matrix Composites ◽  
Ultrasonic Machining ◽  
Response Parameter ◽  
Through Hole

Metal matrix is highly acceptable composites providing good strength for industrial use. In many field of industries, especially aerospace industry metal matrix composites of type Al/SiC is used because of its superior properties. In this research work, experimentalanalysis has been done for producing through hole on metal matrix composites with suitable quality ultrasonic machining (USM) process. Three unconstrained process parameters are chosen, like abrasive slurry concentration, power rating sand tool feed rate. Material removal rate (MRR) is considered as response parameter. The effects of each parameter have been analyzed here. Analysis of variance (ANOVA) has also been applied to identify the most significant factor. Response surface methodology (RSM) has been utilized to developed empirical model for determine the performance of ultrasonic process. Optimization technique has been used to find out the maximum process MRR. Confirmation verification test has been done to improve optimal parametric condition for getting maximum MRR. This research paper gives viability application of USM process for producing of through hole on metal matrix composites and various applications in industry.

Effect of Reinforcements on Mechanical Properties of Nickel Alloy Hybrid Metal Matrix Composites Processed by Sand Mold Technique

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Kumaraswamy Jayappa ◽  
Vijaya Kumar ◽  
Gange Gowda Purushotham
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Hybrid Composites ◽  
Research Work ◽  
Weight Percent ◽  
Matrix Composites ◽  
Hybrid Metal Matrix Composites ◽  
Ni Alloy

Hybrid Metal Matrix Composites (HMMCs) have gained wide applications in aerospace, marine, and domestic areas because of its significant properties relative to external forces and enabling environment. In present research work, Ni-alloy selected as a matrix and Al2O3 of 40–80 μm and TiO2 of 1–5 μm were selected as reinforcements. The composites were prepared by keeping 9 wt. % of TiO2 as unvarying and Al2O3 is varied from 3 weight % to 12 weight % in steps of 3 weight %. Induction furnace is used for the casting of composites and mixing is done by using mechanical stirring at 160 rpm for a time period of 5 min. The prepared composites are then tested for their tensile and hardness as per the ASTM standards. The Scanning Electron Microscopy was used for microstructural study. From experimentation, it was observed that increment in the weight percentage of Al2O3 with constant TiO2 increases the mechanical properties of hybrid composites and proper stirring improves homogeneity in the composite material. The test results show that the addition of Al2O3 up to 9 weight percent increases in tensile strength compared to Ni alloy and tensile strength slowly decreases with the addition of Al2O3 and that the hardness values are directly proportional to the weight percent of the addition of Al2O3 / TiO2.

Composite Peening - A Novel Processing Technology for Graded Reinforced Aluminium Matrix Composites

2017 ◽  
Vol 742 ◽  
pp. 137-144 ◽  
Author(s):  
Michael Seitz ◽  
Andreas Reeb ◽  
Alexander Klumpp ◽  
Kay André Weidenmann
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Solid Phase ◽  
Base Material ◽  
Functionally Graded ◽  
Matrix Composites ◽  
Ceramic Particles ◽  
Novel Processing ◽  
Material Utilization ◽  
Stressed Component

Recently, the attention paid to Metal Matrix Composites (MMCs) has increased markedly. In particular, particle-reinforced MMCs are outstanding due to superior specific properties and their wear resistance. In order to further improve material utilization, recent investigations with local reinforcements in highly stressed component sections, the so-called Functionally Graded Metal Matrix Composites (FGMMC), are concerned. The production of such FGMMC was realized with composite peening - a modified process on the basis of micro shot peening. Due to this solid-phase process, ceramic particles can be introduced into regions close to the boundary layer. As preliminary studies on tin show, ceramic particles can be introduced close to the specimen surface even at room temperature. By varying process parameters, in particular by increasing the temperature, the penetration depth of the particles can be significantly increased. In case of aluminium as base material, an input of particles into the surface could be observed at a process temperature of 150 °C. The combination of aluminium with reinforced ceramic particles makes this process interesting for lightweight, wear-resistant and cyclically highly stressed structural components. Using composite peening to produce FGMMCs is a novel, economic approach.

Synthesis and Characterization of Al7075/SiC Composite by Stir Casting

2014 ◽  
Vol 592-594 ◽  
pp. 760-764 ◽  
Author(s):  
N. Vinoth Babu ◽  
T.V. Moorthy
Keyword(s):  
Aluminum Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Moisture Absorption ◽  
Liquid Aluminum ◽  
High Surface ◽  
Research Work ◽  
Stir Casting ◽  
Matrix Composites ◽  
Low Sensitivity

In recent years, stringent requirements of material quality in automotive and aerospace industries have necessitated the development of lightweight aluminum alloys. In this context, it is known that the metal–matrix composites offer a spectrum of advantages that are important for their selection and use as structural materials. A few such advantages include the combination of high strength, high elastic modulus, high toughness and impact resistance, low sensitivity-to changes in temperature or thermal shock, high surface durability, low sensitivity to surface flaws, high electrical and thermal conductivity, minimum exposure to the potential problem of moisture absorption resulting in environmental degradation, and improved fabricability with conventional metal working equipment Metal matrix composites (MMC) are generally produced either by liquid metallurgy or powder metallurgy techniques. Stir casting is one of the most inexpensive tools for the production of particulate metal matrix composites . It is simplest and most commercially used technique for casting MMCs. This involves incorporation of ceramic particulate into liquid aluminum alloy in molten state and allowing the mixture to solidify. Here, the crucial thing is to create good wetability between the particulate reinforcement and the liquid aluminum alloy. In this proposed work , composites of Al7075 with SiC were fabricated using Stir casting method by using both upward and downward pouring methodology .The main objective of this research work are to achieve uniform distribution of SiC particles in the aluminum alloy matrix , characterization and analysis of mechanical properties of composites formed . Experiments were carried out with different stirring speeds and specimen of different %wt of SiC were cast . Microstructure , Tensile strength and hardness values were found by conducting the corresponding tests and results were analyzed and compared . Keywords - MMCs , Stir casting , Wire cut EDM , SiC reinforced metal matrix composites

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