• Mounting Plate, Stress Concentration and Damage Tolerance Analysis for Antenna Installations On Pressurized Transport Aircraft Using The FEM 

  Woldeyesus, Mideksa (Addis Ababa University, 2021-07)

  During the in-service life of a given aircraft, different antennas are installed on the fuselage of the aircraft for different operational and regulatory requirements. These antennas are part of the Communication, Navigation ...
• Modeling the Interfacial Shear Strength of Natural Fibers Epoxy Matrix by Pullout Failure Mode 

  Fasil, Henok (Addis Ababa University, 2022)

  Recently natural fiber composites are overtaking the place of synthetic fiber composites for many applications, so it seems crucial to model interfacial shear strength of it and study the load transfer efficiency between ...
• Numerical Simulation for High Cycle Fatigue Life Prediction of Pre-tightened Bolts of Connecting Rod: TOYOTA D4D Dolphin Case 

  Bikila, Debela (Addis Ababa University, 2022-03)

  The connecting rod (Conrod) bolts are integral components of the engine that are used to connect the piston with the crankshaft through the connecting rod. If the conrod bolts pretension reliability is insufficient or ...
• Design, Development and Testing of Drop-weight Impact Test Machine 

  Dagmawe, Tadesse (Addis Ababa University, 2021-08)

  The aim of this project is to design a drop weight impact test machine and conduct test with the prototype. The testing of materials under dynamic conditions needs an e cient and reliable equipment to experimentally ...
• Numerical Based Parametric Study on the Static Structural and Modal response of Composite UAV Wing 

  Fasil, Erkyhun (Addis Ababa University, 2022-03)

  In this research, an Unmanned Aerial Vehicle (UAV) wing made of carbon epoxy composite material was used to investigate the wing static structural and modal response. The aerodynamic pressure load was calculated on ANSYS ...
• Numerical Modeling of Thermo-Mechanical Stress Field Associated with Mode-I and Mixed-Mode Fracture in Homogenous Isotropic Materials 

  Wondimu, Dessalegn (Addis Ababa University, 2021-11)

  Engineering components exposed to different loading include mechanical, thermal or combined thermo-mechanical loading. Some of the components subjected to thermomechanical loading are gas turbines, engines, reactor ...
• Investigation on Crashworthiness of Locally Manufactured Bus Structural Frame by using Numerical Approach 

  Alazar, Mulugeta (Addis Ababa University, 2021-12)

  The thesis aimed to investigate the crashing behavior of locally manufactured 60 seated bus structural frames in case of frontal and side impacts. In addition to studying the crashworthiness of current structure, the ...
• Development of Ni-modified Alloy Steel for Power Transmission Gear Material and Investigation of its Fatigue Failure 

  Hailemariam, Nigus (Addis Ababa University, 2021-11)

  Transmission gears have been working under severe working situations of loads and rotations, due to these situations, the properties and qualities of gear materials are greatly influenced. Consequently, contact fatigue ...
• Characterizing Tensile and Flexural Properties of Synthetic Fibers-Reinforced Epoxy Composite for Foot Prosthetic Application 

  Galana, Abay (Addis Ababa University, 2021-09)

  Materials has direct and critical impact on the performance of prosthetic foot. The aim of this thesis is to characterize the tensile and flexural properties of the four stacking sequences of E-glass and hybrid (E-glass/carbon) ...
• Structural Optimization, Crashworthiness and Strength Analysis of Midi – Bus Structure in Static and Rollover Condition 

  Hailemichael, Solomon (Addis Ababa University, 2021-10)

  Midi-buses are a valuable vehicle to transport services and goods in Ethiopia's rural and urban areas. However, midi-bus are indirectly regulated through inspecting the end product (finished bus) during licensing for the ...
• Evaluation of Vibration Characteristics and Human Response to Hand Transmitted Vibration of Single Axle Tractor with Varying Key Parameters 

  Siraj, Kedir (Addis Ababa University, 2021-07)

  Hand-Arm vibration from a 15-horsepower single-axle tractor can be very powerful and can induce operator fatigue plus various physiological disorders in the vascular, neurological and musculoskeletal systems. The ...
• Investigation on the Contact Fatigue of Railway Wheel Using a Critical Plane Model 

  Aklilu, Getnet (Addis Ababa University, 2021-06)

  The contact areas between rail and wheel are highly critical to determine the performance of rail vehicles. So, the investigation of this highly stressed interface is important for the study of different damages mechanisms ...
• Fracture Analysis of Shaft due to the Second Higher Critical Speed (Vibration) for AISI 1018 Steel Shaft 

  Semihar, Ayalew (Addis Ababa University, 2021-03)

  This paper was devoted to analyze fracture of shaft failure due to the second higher critical speed for AISI 1018 steel shaft. In this particular research, the influence of transverse cracks in a rotating shaft was ...
• Experimental Evaluation of Fracture Toughness and Water Absorption Behavior of Woven Sisal And E-Glass Fibers Reinforced Hybrid Composite Material 

  Oda, Kerre (Addis Ababa University, 2021-03)

  The fracture toughness and influence of rain water aging on mode I fracture resistance of woven sisal and E-glass fibers hybrid composite material is experimentally studied in this paper. The sisal fibers were extracted ...
• Numerical Modeling of Mode II Subsurface Crack Propagation of Through-Hardened Fe-0.5Mo-4Ni-2Cu-0.6C Steel Subjected to Rolling–Sliding Contact 

  Heaven, Gofawork (Addis Ababa University, 2021-05)

  Contact fatigue is the main damage mechanism of the mechanical components that are subjected to cyclic contact stresses. Gears, bearings, and cams are among the components that may fail due to contact fatigue or subsurface ...
• Numerical Determination of The Effect of Filler Volume Fraction, Geometry, And Temperature on Thermal and Mechanical Property of Polymer Nanocomposites 

  Abrahaley, Eukubay (Addis Ababa University, 2021-03)

  Some of the engineering materials cannot be standalone for specific applications due to certain limitations of their property. To overcome this limitation, different constitutes mix with other materials to produce a composite ...
• Rolling Contact Fatigue Life Analysis on Rail Track in Ethio-Djibouti Railway Line, Awash Area 

  Sisay, Petros (Addis Ababa University, 2020-06)

  Now a day the railway transport is becoming the most important transportation sector in Ethiopia. This research paper presents the analysis of rolling contact fatigue damage of rail due to cyclic axle load between the ...
• Torque Capacity and Crack Propagation Analysis of Fiber-reinforced Composite Hollow Transmission Shaft 

  Okqubamariam, Leake (Addis Ababa University, 2012-08)

  The main purpose of this thesis is to investigate torque capacity and crack propagation resistance of glass fiber-reinforced polyester polymer composite material. This has been done in order to use this composite material ...
• Structural Analysis of Bamboo and E-glass Fiber Reinforced Epoxy Composite for Wind Turbine Blade using Finite Element Method and CFD 

  Netsnet, Berga (Addis Ababa University, 2020-10)

  As far as a wind power generation technology increases, selecting the better wind turbine blade material is becoming more and more important. Modeling and stress analysis of wind turbine blade are very essential for further ...
• Porosity Effect Analysis on The Dimension of Cast Pinion Gear, Drive Disc and Head Stock Components of Manganese Steel 

  Netsanet, Desalegn (Addis Ababa University, 2016-07)

  Production of parts by casting operation involves various processes which include pattern making, mold preparation, core making, melting and pouring, removal of the cast from the mold, cleaning, finishing and inspection. ...

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