Blar i UiS Brage på forfatter "Lemu, Hirpa Gelgele"
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Investigations of Microstructure and Mechanical Properties of 17-4 Ph Ss Printed by Markforged Metal X
Akessa, Adugna Deressa; Tucho, Wakshum Mekonnen; Lemu, Hirpa Gelgele; Grønsund, Jørgen (Peer reviewed; Journal article, 2022-10)The Markforged Metal X (MfMX) printing machine (Markforged Inc., Massachusetts, USA) is one of the latest introduced additive manufacturing (AM) devices. It is getting popular because of its safety, simplicity, and ability ... -
Komponent design og studie av interne overflatekvalitet for 3D-printet deler av en malingsrobot
Al-Dayekh, Mahmood; Belay, Simon; Søraunet, Aksel (Bachelor thesis, 2021)Denne oppgaven er skrevet I samarbeid med ABB. Oppgaven bygger på å forbedre en malingsrobot. Malingsroboten består av flere mekaniske deler. Fokuset er å forbedre bæreevnen ved å studere ytterarmen på roboten og redusere ... -
Komponent design og studie av interne overflatekvalitet for 3D-printet deler av en malingsrobot
Al-Dayekh, Mahmood; Belay, Simon; Søraunet, Aksel (Bachelor thesis, 2021)Denne oppgaven er skrevet I samarbeid med ABB. Oppgaven bygger på å forbedre en malingsrobot. Malingsroboten består av flere mekaniske deler. Fokuset er å forbedre bæreevnen ved å studere ytterarmen på roboten og redusere ... -
Komponent design og studie av interne overflatekvalitet for 3D-printet deler av en malingsrobot.
Al-Dayekh, Mahmood; Belay, Simon; Søraunet, Aksel (Bachelor thesis, 2021)Denne oppgaven er skrevet I samarbeid med ABB. Oppgaven bygger på å forbedre en malingsrobot. Malingsroboten består av flere mekaniske deler. Fokuset er å forbedre bæreevnen ved å studere ytterarmen på roboten og redusere ... -
Minimization of Surface Roughness and Temperature during Turning of Aluminum 6061 Using Response Surface Methodology and Desirability Function Analysis
Gutema, Endalkachew Mosisa; Gopal, Mahesh; Lemu, Hirpa Gelgele (Peer reviewed; Journal article, 2022)Aluminum alloy is the second most abundant metal on Earth, known for its wide range of utilization in commercial goods due to its heat capacity and tensile strength. This study examines the effect of nose radius on the ... -
Multi objective parametric optimization and composite material performance study for master leaf spring
Batu, Temesgen; Lemu, Hirpa Gelgele; G. Michael, Elias (Peer reviewed; Journal article, 2021-03)Design optimization of product with the objective of reducing weight is one of current focuses in a product design. In the vehicle industry, in particular, weight reduction has significant impact on vehicle efficiency ... -
Optimal Rotary Wind Turbine Blade Modeling with Bond Graph Approach for Specific Local Sites
Mohammed, Abdulbasit; Sirahbizu, Belete; Lemu, Hirpa Gelgele (Peer reviewed; Journal article, 2022-09)The wind turbine blade is an important component for harnessing wind energy. It plays a vital role in wind turbine operation. In this work, a study was conducted to investigate the dynamic behavior of an optimal rotary ... -
Performance analysis of thrusters and using the concept of Design for Assembly for construction of an ROV-frame
Høien, Sigvart Daniel Rodriguez; Voerman, Alexander Falch (Bachelor thesis, 2021)This thesis aimed to develop an ROV-frame based on the concept of Design for Assembly, while conducting a performance analysis of the thrusters to be used for its required motion. The development of the ROV-frame and the ... -
Performance analysis of thrusters and using the concept of Design for Assembly for construction of an ROV-frame
Voerman, Alexander Falch; Høien, Sigvart Daniel Rodriguez (Bachelor thesis, 2021)This thesis aimed to develop an ROV-frame based on the concept of Design for Assembly, while conducting a performance analysis of the thrusters to be used for its required motion. The development of the ROV-frame and the ... -
Prediction of tensile strength in fused deposition modeling process using artificial neural network and fuzzy logic
Tura, Amanuel Diriba; Lemu, Hirpa Gelgele; Mamo, Hana Beyene; Santhosh, A. Johnson (Peer reviewed; Journal article, 2022)Fused deposition modeling is a modern rapid prototyping technique that is used for swiftly replicating concept modeling, physical modeling, and end-of-line manufacture. Precision parameter selection is crucial for generating ... -
Product Development of Seawater Hydraulics
Jørs, Marius Hole (Master thesis, 2022)The sub-sea industry mainly uses hydraulics with mineral oil as the pressure medium for operating tools, manipulators, and drive for Remotely Controlled Vehicles (ROVs). Using mineral oil as the pressure medium comes with ... -
Questionnarie-based Survey of Experiences with the Use of Expanding PIN Systems in Mechanical Joints
Lemu, Hirpa Gelgele; Karlsen, Øyvind (Peer reviewed; Journal article, 2021)In this paper, experiences with the use of expanding pins in mechanical joints in different equipment are investigated through a questionnaire-based survey, where six different sections are highlighted; Size of company, ... -
Studies on the Geometrical Design of Spider Webs for Reinforced Composite Structures
Regassa, Yohannes; Lemu, Hirpa Gelgele; Sirabizuh, Belete; Rahimeto, Samuel (Peer reviewed; Journal article, 2021-02)Spider silk is an astonishingly tough biomaterial that consists almost entirely of large proteins. Studying the secrets behind the high strength nature of spider webs is very challenging due to their miniature size. In ... -
Study of Machinability in Drilling Operation of Enset–Sisal Hybrid Polyester Composite
Bekele, Abera E.; Lemu, Hirpa Gelgele; Jiru, Moera G. (Journal article; Peer reviewed, 2022-07-14)Due to their light weight, low density, high-specificity strength, and ease of fiber surface treatment, natural-fiber-reinforced composites are recognized as the most suitable materials for interior part applications. ... -
Study of medical image data transformation techniques and compatibility analysis for 3D printing
Kurukkal, Navaneethan Sahasthiranatha (Master thesis, 2022)Various applications exist for additive manufacturing (AM) and reverse engineering (RE) within the medical sector. One of the significant challenges identified in the literature is the accuracy of 3D printed medical ... -
Temperature Optimization by Using Response Surface Methodology and Desirability Analysis of Aluminium 6061
Gutema, Endalkachew Mosisa; Gopal, Mahesh; Lemu, Hirpa Gelgele (Peer reviewed; Journal article, 2022)Because aluminium is a lightweight and low-density material, its alloys, such as Al 6061 alloy, are extensively used in numerous automobile, defense, and aviation components. This study aims to develop a predictive model ... -
Torque Transfer System for offshore Turret Production System
Valborgland, Odd-Gunnar (Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020-06)Turret production systems allow Floating Production Storage and Offloading (FPSO) units to weathervane and thus significantly reduce environmental loads on the mooring system. There are several different variants of such ...