iosr-JMCE   Volume-18 ~ Issue-2 ~ Mar. – Apr. 2021

Abstract: Background: Water is a very important requirement for humans. Water is used both for daily life and for small and large industries. One of the greatest challenges facing mankind in the future is how to ensure that people achieve universal access to clean water. The threat of a clean water crisis is in sight as a result of climate change, infrastructure development that is not environmentally friendly, waste from various industries and many bad human acts that have damaged nature. The rate of population growth is also directly proportional to water demand, but inversely proportional to the ability of land to provide a source of clean water for humans. The use of membrane technology as a solution for clean water treatment is widely used by people and factories to meet their clean water needs. The manufacture of membranes made from the main material of Polyethersulfone (PES) and Polyvinylidene fluoride (PVDF) membranes with the mixing of cheap and simple Titanium Dioxide is interesting for research and a comparison of the tensile strength of the results of the manufacture of these membranes will be carried out.......

Keywords: Polyvinylidene fluoride membrane ; Polyethersulfone membrane ; Electric Field method; Membrane tensile testing

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Abstract: This project's aim is to clean floors in schools, hospitals, auditoriums, shopping malls, and workshops. The aim of this project is to design and improve a cleaning process for a floor with wet and dry surfaces. The cleaning of floors was traditionally performed by 8 to 10 employees, which resulted in significant exhaustion among the workers as well as a lack of cleaning quality. It has a very simple construction and is simple to operate; anyone can operate it. This floor cleaning machine includes a moisture cotton mop, swiping brushes, and wipers cleaner to cut cleaning time in half.

Key Word: DC geared motor, fasteners, switch board, water tank, caster wheels, frame, vacuum cleaner, heating coil, mop, wiper, brush or scrubber and chassis.

[1]. Jigar Patel, BijalRana, Swapnil N Sharma, (2019), 'Wireless Multi-Purpose Floor Cleaning Machine'International Journal of Engineeringand Science, Vol 9, Issue No 4.
[2]. Ansari M Bilal, M Aadil Arshad, Muhammad Kashif, (2018), 'Design and development of floor cleaning machine' International journal for scientific research and development, Vol 6, Issue 1, 2018 [ISSN No:2321-0613].
[3]. ShubhamKhade, (2017), 'Multi-use floor cleaning machine', International Journal of Mechanical Engineering and Technology (IJMET), Vol 8, Issue 5, pp 656-664.
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[5]. Samarth G. Gaikwad, Shashank S. Kulkarni, Virendra P. Patil, Ashutosh S. Nagargoje, December (2019), 'Design And Development Of Multi-Functional Floor Scrubber And Cleaner' International journal of scientific and technology research, Vol 8, issue 12, [ISSN 2277-8616].

Abstract: Background: The world's most common and extensively used metal is undisputably Aluminium. Aluminium has applications in almost all the sectors of engineering ranging from automobiles to electronics. Since pure aluminium is ductile and malleable, it becomes necessary to alloy it to enhance the mechanical properties. It is already established that Al alloyed with Si enhances these properties. Al-Si alloys are classified into hypoeutectic LM-25 (7wt% Si), eutectic LM-6 (12wt%Si) and hypereutectic LM-30 (17wt% Si). These three alloy compositions have their own specific properties which can be further improved with the addition of grain refiners and modifiers

Key Word: Al-Si alloys,Torque, Thrust, Grain Refiner, Modifier, ANOVA.

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[3]. Satya Prema, Shreeshail G.Y, T.M. Chandrashekharaiah, Analysis of machining parameter and surface finish of Al - Si alloys with grain refiners and / or modifier, Materials Science Forum, ISSN: 1662-9752, Vols. 830-831, (2015) 91-94
[4]. Satya Prema, Murali G.E, T.M. Chandrashekharaiah, Studies of Microstructures and Mechanical Properties on Al-Si Alloy(A390) using Grain refiners and/or Modifier, International Journal of Scientific & Engineering Research, Volume 7, Issue 8, August-2016 580 ISSN 2229-5518
[5]. Devappa, T.M. Chandrashekharaiah, Studies on the Effect of Minor Addition of Sr and Mg on the Microstructure and Mechanical Properties of A413 Alloy, International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181,
IJERTV4IS060032, Vol. 4 Issue 06, June-2015

Abstract: Natural convection heat and mass transfer flow have been studied in presence of magnetic field on a vertical plate embedded in porous media. The governing equations make dimensionless using usual transformation. The numerical solution has obtained employing explicit finite difference method. The influence of entering physical parameters on the velocity, temperature and concentration profiles as well as local and average shear stress, Sherwood number and Nusselt number have discussed and presented graphically

Key Word: Free convection, Porous Medium, Explicit Finite Difference, Magneto hydrodynamics, Heat and Mass Transfer

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Abstract: Recently, magnetic field treated water (MFTW) is receiving special attention due to it is ability to enhance the performance of traditional concrete. In the part of this paper, we study the influence of magnetized water prepared at constant field strength (1.4)Tesla with a number of cycles equal to (50, 100, 150) cycles on the average compressive strength to find the optimum number of cycles. In the second part, we study the effect of magnetized water prepared at the optimum number of cycles on compressive strength, flexural strength and workability of fresh concrete through (6) mixes prepared with two types of water tap water and magnetized water with fly ash replacement percentage (0, 10, 20)% of cementitious materials and constant dosage of super-plasticizer (1)%. Results indicated that the use of magnetized water instead of ordinary water improves the fresh and mechanical properties of traditional concrete.

Key Word: Magnetized water; Optimum cycles number; Fly ash; Super plasticizer.

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Abstract: The purpose of this paper is to research the response of isotropic and anisotropic Magnetorheological Elastomer (MRE) with 15 and 30 percent of iron particles comprising in matrix of MRE with respect to transmissibility and percentage of vibration absorption. Fabrication and experimental investigation were carried out to study the response of MREs with respect to transmissibility and percentage of vibration absorption by using fast fourier transform (FFT). To ensure the validation of experimental result different readings were taken to compare characteristics in different loading conditions. Result obtained from the experimental analysis of samples of isotropic and anisotropic MREs with with 15 and 30 percent of iron particles were compared. Result show that best performance......

Key Word: Smart material, Magnetorheological elastomer, Transmissibility, Vibration absorption.

[1]. L. M. P.Pineda, I. A. P.Martinez, L. M. L.Sanchez, O. M.Romero, and J. P. C, Emmanuel S.-C. and A. E.-Z. "Experimental Investigation of the Magnetorheological Behavior of PDMS Elastomers Reinforced with Iron Micro-Nanoparticles" Polymers, Vol.9, 696, 2017.
[2]. N Zerrouni, S. Aguib, A. Grine, N. Chikh "Numerical Simulations and Experimental Analysis of Magneto-Mechanical Behavior of Anti-Seismic Active Sandwich Structure" Journals of Vibroengineerings, Vol,. 21, Issue7, Nov. 2019.
[3]. K. A. Kalina, P. Metsch, M. Kästner "Microscale Modeling and Simulation of Magnetorheological Elastomers At Finite Strains: A Study on The influence of Mechanical Preloads", IJSS ,Vol. 8, pp. 6526-6530.
[4]. S.H. Kwon, J.H Lee and H. Jin Choi "Magnetic Particle Filled Elastomerics Hybrid Composites and their Magnetorheological Response" Materials 2018, Vol.11, pp.1040, 2018.
[5]. M. Yu, Z. Xing, X. Zheng, J Fu1 and S.B. Choi "Experimental Investigation on the Field-Dependent Properties of Magnetorheological Elastomer with Circulars Honeycomb Holes" Vol. 1, Article 34,2015

Abstract: In this research composite of aluminum alloy reinforced with nanoB4C particles were fabricated through ultrasonic-cavitation assisted casting process followed by hot-rolling at a temperature of 4500C, The Micro structural analysis showed the presence and uniform distribution of boron carbide nano-particles with good bonding with Al6063 alloy, in case of hot rolling, The B4C particles have been found to align in the rolling direction. The Grain size analysis of composite indicates that significant grain refinement compared to base matrix alloy. The addition of nanoB4C particles shows improvement in hardness compared to non-reinforced aluminium in before and after hot rolling. The tensile strength of as cast composites was increased with an increase in nanoB4C particle content up to 4 wt. % but beyond 4wt% leads to the decrease in strength of composites, The hot rolled Al6063alloy and its composites show a substantial increase in hardness, tensile strength and ductility those of as cast counterpart

Key Word: Al6063alloy, Ultrasonic Cavitation assisted casting, hot rolling, Microstructure and Mechanical behaviour

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