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PARAMETRIC OPTIMIZATION OF TUNGSTEN INERT GAS WELDING FOR ALUMINUM 1100 BY USING RESPONSE SURFACE METHODOLOGY

WEGAYEHU, MULUNEH ZELEKE (2024-03)

This research presents the results of tungsten inert gas (TIG) welding of aluminum alloy 1100 in the butt joint, with single pass. The sample dimensions were 100 × 50 × 3mm3. The TIG welding was done with 2.4 mm diameter ...

NUMERICAL AND EXPERIMENTAL STUDY ON THE PERFORMANCE OF SOLAR PHOTOVOLTAIC PANELS BY COOLING MECHANISMS USING FINS AND PHASE CHANGE MATERIALS.

KASSA, ENAWGAW (2024-01)

Due to increased efforts to reduce carbon emissions and ensure sustainable growth of the energy supply, the use of solar energy for electric power generation through photovoltaic (PV) cells has experienced outstanding ...

Optimization of TIG Process Parameters of Stainless Steel 304L Pipe Welding based on the Mechanical properties.

Fantahun, Yemane (2022-09)

Tungsten inert gas welding (TIG) is a fusion welding process that has a wide variety of applications in today's industry. The TIG welding parameters play a very important role in evaluating the quality of a weld. This ...

RESIN SPRAY-COMPACTION METHOD FOR LONG FIBER REINFORCED PLASTICS MANUFACTURING: COMPUTATIONAL FLUID DYNAMICS MODELING AND EXPERIMENTAL VALIDATIONS

AMARE, DEMELIE ZEGEYE (2024-03)

Manufacturing high-performance fiber reinforced plastics (FRP) products within short manufacturing cycles is a significant challenge in the industry. This study investigated the application of resin spray-compaction ...

NUMERICAL AND EXPERIMENTAL PERFORMANCE INVESTIGATION OF CROSS-FLOW MAISOTSENKO CYCLE (M-cycle) INDIRECT EVAPORATIVE COOLER FOR PRESERVING FRUIT AND VEGETABLE

ALEMTSEHAY, GIRMA BEKELE (2024-06)

In Ethiopia, post-harvest losses (PHL) of fruits and vegetables are notably higher than those of other crops due to their perishable nature. To address this issue and extend their shelf life, cold storage has proven to be ...

Food Supply Chain Design: Case study (MEAD Food Complex Share Company Debere Marekos)

WORKU, TEREFE REDA (2024-02)

The primary objective of this study is to design optimal food supply chain network for Maed food complex share company. On these premise the study investigates the optimal location of retailer to minimize cost and designing ...

ERGONOMICS RISK ASSESSMENT USING POSTURAL ANALYSIS: IN CASE OF BAHIR DAR CITY CONSTRUCTION INDUSTRY

Tibebu, Matebie (2024-03)

People working in different professions within an industry or sector are exposed to injuries or diseases due to the improper fitting of workers and work environments. Identification of ergonomic risk factors and analyzing ...

MULTIPLE-OBJECTIVE OPTIMIZATION MODEL FOR THERMAL COMFORT AND ENERGY CONSERVATION IN SMART BUILDING BASED ON A HYBRID ARTIFICIAL NEURAL NETWORK WITH MULTI-OBJECTIVE WHALE OPTIMIZATION ALGORITHM

TESHOME, BEKELE DAGNE (2024-01)

Smart building air condition and mechanical ventilation (ACMV) systems which provide cooling operations suffers from the balance between thermal comfort (TC) and energy consumption (EC). This dissertation proposes a bilayer ...

The effect of QMSimplementation practice on organizational performance and market competitiveness: case study of ELICO-Awash tannery

Molla, Aragie (2023-06)

The quality management system has affirmative effects on the operational endeavors of the organization. Itprovides consistency of processes, consistency of products and procedures through integrating all activities and ...

Ergonomic Evaluation of Barn Tasks in Cattle Production (A Case Study of Cattle Farming Around Bahir Dar City)

Mesele, Worku Nega (2024-02)

Cattle farming presents inherent risks of musculoskeletal disorders (MSDs) for workers engaged in barn tasks, stemming from cumulative strain and physical exertion. This study adopts a multifaceted approach, integrating ...

Design and Development of TPM model for plastic manufacturing industry: A case study on OK plastic factory

Henok, H/Meskel (2024-05)

Aim of the study is to evaluate how specific TPM pillars impact the production performance of Ok Plastic Factory. The factory currently relies on reactive maintenance, resulting in increased resource demands, overlooked ...

Effect of Total Productive Maintenance Practices on Manufacturing Performance in Dangote Cement Ethiopia Private Limited Company

Habtamu, Legese (2024-03)

The purpose of the study was to evaluate the Total Productive Maintenance (TPM) pillars of TPM such as autonomous maintenance, focused improvement, planned maintenance, education and training, safety, health and environment) ...

Investigation of process capability of plywood surface veneer quality in Eucalyptus plywood factory: the case of Debre-Berhan wood processing PLC.

Getachew, Zinabie (2024-03)

Process capability measurement is an important aspect of quality improvement to decide whether the process is capable of meeting the specification or not. The objectives of this research were to assess the case organization's ...

Design, Development, and Performance Investigation of Electric Wheelchair with Detachable Handle

Destaw, Belete (2024-03)

Studies show that human physical disabilities are increasing with global population growth due to manmade and natural causes. Mobility handicaps cover the largest number from total physical disability. The mobility-impaired ...

PROCEDURE ANALYSIS BY INTEGRATING FMEA AND SIX SIGMA TO IMPROVE OVERALL EQUIPMENT EFFECTIVENESS (IN CASE OF SENSELET FOOD PROCESSING PLC.)

Daniel, Bichil (2024-02)

To meet the increasing demand for potato chips in the Ethiopian market, potato processing businesses must enhance their overall equipment effectiveness and elevate their sigma level. Productive companies enhance OEE by ...

SOLVING AC OPTIMAL POWER FLOW PROBLEM USING ARTIFICIAL NEURAL NETWORK

Zewetr, Aynadis (2024-06)

Optimal Power Flow (OPF) problem is being solved every day many times in power systems throughout the world by grid operators to get the optimal power dispatch so that the network can be operated reliably and economically. ...

MODELING AND OPTIMAL SIZING OF OFF-GRID SOLAR WIND BASED HYBRID ENERGY SYSTEM FOR RURAL ELECTRIFICATION IN ETHIOPIA, (CASE STUDY: SOMALI REGIONAL STATE, FERFER KEBELE)

ZERIHUN, SHIMELIS ABEBE (2024-07)

Access to electricity services, especially in rural areas, is a significant developmental challenge in Ethiopia. As a consequence, the inhabitants in these regions heavily rely on traditional biomass for cooking, ...

ASSESSMENT OF RELIABILITY AND REDUCTION OF DISTRIBUTION SYSTEM POWER INTERRUPTION THROUGH INTELLIGENT PLACEMENT OF DISTRIBUTED GENERATION (CASE STUDY: BAHIR DAR SUBSTATION II R1-G3 FEEDER )

Yibeltal, Damtie Tilahun (2023-10)

In Bahirdar city, frequent and protracted power outages have become a major issue. The life and economic activity of society have been significantly impacted by this issue. Power outages have a huge financial impact on ...

RELIABILITY ASSESSMENT OF DISTRIBUTION SYSTEM WITH DISTRIBUTION GENERATION (DG) [CASE STUDY: WUCHALE FEEDER]

YECHALE, ATINAFU TEMESGEN (2024-06-07)

Distribution systems reliability is a great concern to any electric power utility company. Power utility companies are working to provide reliable power through many systems. Distributed Generation (DG) is considered the ...

COMPARATIVE STUDY BETWEEN FUZZY-PID AND ANN-PID CONTROLLERS FOR POWER SYSTEM TRANSIENT STABILITY ENHANCEMENT [CASE STUDY: TIS ABAY II HYDRO POWER PLANT]

WOLDEGEBRIEL, ASHEBIR (2024-07)

An interconnected power system is continuously interrupted in many ways, which leads to a loss of stability. Either a big or minor disturbance is what leads to instability. In a synchronous generator, this disruption causes ...

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