Mechanical Engineering: Recent submissions

Now showing items 21-40 of 210

Effect of stirring speed and time on the mechanical properties of Al8011- SiC metal matrix composites Article

Ashok, N.; Santhosh, A. Johnson; Tura, Amanuel Diriba; Mamo, Hana Beyene; Lemma, Eyuel Abate; Melaku, Lingerew Enbakom (2022-04-27)

In this experimental research work, specimens were fabricated with three different stirring time periods and two different stirring speeds using the standard experimental setup to obtain Al 8011-SiC composites with the ...
Kinetic Modeling and Optimization of Biomass Gasification in Bubbling Fluidized Bed Gasifier Using Response Surface Method Article

Tulu, Tolossa Kebede; Atnaw, Samson Mekbib; Bededa, Robera Daba; Wakshume, Demeke Girma; Ancha, Venkata Ramayya (2022-07-21)

This paper presents the kinetic modeling of biomass gasification in bubbling fluidized bed (BFB) gasifiers and optimization methods to maximize gasification products. The kinetic model was developed based on two-phase ...
Experimental Investigation and Prediction of Mechanical Properties in a Fused Deposition Modeling Process Article

Tura, Amanuel Diriba; Lemu, Hirpa G; Mamo, Hana Beyene (MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations., 2022-06-20)

Additive manufacturing, also known as three‐dimensional printing, is a computer‐ controlled advanced manufacturing process that produces three‐dimensional items by depositing materials directly from a computer‐aided ...
Review and synthesis of a walking machine (Robot) leg mechanism Article

Terefe, Tesfaye Olana; Lemu, Hirpa G.; K/Mariam, Addisu (2019-07-30)

A walking machine (robot) is a type of locomotion that operates by means of legs and/or wheels on rough terrain or flat surface. The performance of legged machines is greater than wheeled or tracked walking machines ...
Kinematic Modeling and Analysis of a Walking Machine (Robot) Leg Mechanism on a Rough Terrain Article

Terefe, Tesfaye O.; Lemu, Hirpa G.; K/Mariam, Addisu; Tuli, Tadele B. (2019-07-07)

Many manmade machines and mechanisms, including robots, function based on the concept of nature-inspired design, so that they can perform their intended duties by mimicking the working mechanisms of animals and insects. ...
A work done approach on analyzing the effects of densification parameters on tapered screw extruders Article

Tadese, Addisu Kidanemariam (2022-04-19)

Densification is the process of compacting bulk material to increase its physical and energy density. One way of densifica tion is by using screw extruders. Yet, sufficient theoretical studies have not been carried out on ...
Investigation of Soil Physicochemical Effects on the Corrosion of Buried Iron Pipes Article

Yeshanew, Dessalegn A.; Jiru, Moera Gutu; Tolcha, Mesay Alemu (Published by SET Publisher, 2021-08-17)

Soil corrosivity was an active problem of water pipeline damaged by corrosion that affects the performance of pipe manufacturers. In Addis ababa, groundwater pipelines were facing breakage and like due to corrosion ...
Design, development, and performance evaluation of husk biomass cook stove at high altitude condition Article

Kole, Adem Tibesso; Zeru, Balewgize A.; Bekele, Endeshaw Alemu; Ramayya, Ancha Venkata (2022-11-01)

In many of the developing countries including Sub-Saharan Africa, most of the improved cook stoves were designed by considering only wood fuel, and as such are not suitable for using husk type biomass available aplenty ...
A Novel Study of Synthesis and Experimental Investigation on Hybrid Biocomposites for Biomedical Orthopedic Application Article

Subba Rao, C. V.; Sabitha, R.; Murugan, P.; Rao, S. Rama; Anitha, K. (2021-11-29)

In recent years the biocomposites are highly utilized in the biomedical applications, due to excellent strength as well as weight ratio. A lot of natural fibers, namely, flax, hemp, jute, kenaf, and sisal are cheaply ...
Processing and Characterization of Carbon Nanofibre Composites for Automotive Applications Article

Natrayan, L.; Merneedi, Anjibabu; Bharathiraja, G.; Kaliappan, S.; Veeman, Dhinakaran; Murugan, P. (2021-11-21)

Currently, numerous studies have shown that carbon nanofibres have mechanical properties that are replaced by other widely used fibres. The high tensile strength of the carbon fibres makes them ideal to use in polymer ...
A Comprehensive Study on the Effect of Dimethyl Carbonate Oxygenate and EGR on Emission Reduction, Combustion Analysis, and Performance Enhancement of a CRDI Diesel Engine Using a Blend of Diesel and Prosopis juliflora Biodiesel Article

Ramesh, T.; Sathiyagnanam, A.P.; Melvin Victor, Melvin Victor; Murugan, P. (2022-05-14)

this paper examines the combined e ects of ignition improvers (DMC) and EGR on the CRDI small single-cylinder diesel engine’s performance, combustion, and emissions. In this experimentation, 20% (B20) optimal mix of ...
Cluster Head Selection and Energy Efficient Multicast Routing Protocol-Based Optimal Route Selection for Mobile Ad Hoc Networks Article

Kumar, R. Suresh; Manimegalai, P.; Vasanth Raj, P. T.; Dhanagopal, R.; Santhosh, A. Johnson (2022-06-09)

Wireless networks with a large number of peer nodes are known as mobile ad hoc networks (MANETs). In MANETs, the mobility of nodes causes a number of challenges, including path preservation, battery life, safety, ...
Combined Effect of Compression Ratio and Fuel Injection Pressure on CI Engine Equipped with CRDi System UsingProsopis juliflora Methyl Ester/Diesel Blends Article

Ramesh, T.; Sathiyagnanam, A. P.; De Poures, Melvin Victor; Murugan, P. (2022-04-29)

e exhaustion of worldwide oil reserves has created an incipient need to nd hopeful alternative fuels for the future. Substantial research has been done in this direction, and all studies by researchers have provided ...
Reduction of 1/f Noise in Single-Walled Carbon Nanotubes (SWCNTs) Using Gas Adsorption Technique Article

Natrayan, L.; Angalaeswari, S.; Kaliappan, S.; Kumar Reddy, C. Naga Dheeraj; Sivaprakash, V.; Patil, Pravin P.; Murugan, P. (2022-04-21)

Single-walled carbon nanotube (SWCNT) plays a major role in electromagnetic absorption and shielding. Their applications as semiconductors make a breakthrough in communication by miniaturizing the communication devices. ...
Multi-body Dynamic Modeling and Analysis of Wind Turbine Gearbox at Adama II Wind Farm Thesis

Mekdes Tsegaye; Hirpa G. Lemu; Addisu K/Mariam (2021-09)

Wind turbines are the most developed renewable energy prospects that are used to capture kinetic energy from the wind and generate electricity. Modern large-scale wind turbines are subjected to different sorts of ...
Preparation and Characterization of Polyaniline/Electrospun Titania Binary composite for Photocatalytic Methyl Blue Degradation Thesis

Fantanesh Desalegn; Lodrick Wangatia; Rabiul Hussain (2020-11-04)

The improvement of the photocatalytic efficiency of TiO2 nanofibers (NFs), prepared by Electrospinning, is achieved by doping with Polyaniline. The nanocomposite of TiO2 and Polyaniline (PANI) was synthesized by in ...
Design, Structural Analysis And Perfomance Testing Of Spike Tooth Cylinder For Rice Thresher Machine Thesis

Rebira Wirtu; Johnson Santhosh; Fakada Debalo (2023-10)

Cereals, including wheat, barley, oats, rice, maize, sorghum, and millets, are major grain crops globally. Post-harvest grain loss is a significant issue in developing countries, in Ethiopia. Post harvest grain management ...
Modeling the effect of helical baffles on the performance of shell and tube heat exchanger using CFD: (A case for Dashen Brewery Industry) Thesis

Workneh Asmare; Balewgize A. Zeru; Amanuel Tesfaye (2023-07)

One of the many kinds of heat exchangers that are used in industry is the Shell and Tube Heat Exchangers (STHE). According to estimates, more than 35 to 40 percent from heat exchangers are shell and tube systems and ...
Experimental Study on the Parameters Affecting the Performance of Spiral Tube Pump and Numerical Study on Different Water Wheel Paddle Shapes for Locally Developed Stream Powered Spiral Pump System Thesis

Million Mesere; Johnson S.; Addisu K/Mariam (2023-03)

A stream powered spiral pump is a water pumping system that combines to old technologies; water wheel and spiral tube pump. It works based on cascaded manometer principle to pump a portion of water from a stream using ...
Numerical Analysis of Surface Crack in Functionally Graded Coating Using Extended Finite Element Method Thesis

Ashenafi Gemechu; Hirpa G. Lemu; Firew Tullu (2023-09)

Temperature distribution in structural elements in practical cases usually changes in two or three directions. Based on such facts, aiming at more effectiveness, a functionally graded material (FGM) coating, whose ...

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