Vitenskapelige publikasjoner
Woldemariam, Endashaw Tesfaye;
Lemu, Hirpa G.
(2019)
A machine Learning based framework for model approximation followed by design Optimization for expensive numerical simulation-based Optimization problems.
I: The 29th International Ocean and Polar Engineering Conference .
International Society of Offshore & Polar Engineers.
ISBN 978-1-880653-85-2.
s.943-950.
Kopperstad, Karsten Mikal;
Lemu, Hirpa G.
(2018)
Design and Performance Study of Additive Manufactured Thrusters for Remotely Operated Underwater Vehicle.
I: The Proceedings of The Twenty-eighth (2018) International OCEAN AND POLAR ENGINEERING CONFERENCE, ISOPE 2018.
International Society of Offshore & Polar Engineers.
ISBN 978-1-880653-87-6.
Woldemariam, Endashaw Tesfaye;
Lemu, Hirpa G.;
Wang, Gary G.
(2017)
Geometric Parameters' Effect Characterization and Design Optimization of a Micro Scale Cross-flow Turbine for an Improved Performance.
ISOPE - International Offshore and Polar Engineering Conference. Proceedings.
ISSN 1098-6189.
s.569-576.
Lemu, Hirpa G.
(2017)
Assessment and analysis of structural health monitoring techniques for rotating machines.
ISOPE - International Offshore and Polar Engineering Conference. Proceedings.
ISSN 1098-6189.
s.981-988.
Vestli, Herman;
Lemu, Hirpa G.;
Svendsen, Bjørn T.;
Gabrielsen, Ole;
Siriwardane , S.A. Sudath C.
(2017)
Case studies on structural health monitoring of offshore bottom-fixed steel structures.
ISOPE - International Offshore and Polar Engineering Conference. Proceedings.
ISSN 1098-6189.
s.965-972.
Radostina, Petrova;
Lemu, Hirpa G.
(2016)
Adaptability of surgical robot to guide its clamp operation along predefined path.
I: Advanced Manufacturing and Automation V.
WIT Press.
ISBN 978-1-78466-169-4.
s.126-133.
Safari, Amir;
Hajikolaei, Kambiz Haji;
Lemu, Hirpa G.;
Wang, Gary G.
(2016)
A High-Dimensional Model Representation Guided PSO Methodology with Application on Compressor Airfoil Shape Optimization.
I: ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition.
The American Society of Mechanical Engineers (ASME).
ISBN 978-0-7918-4975-0.
Lemu, Hirpa G.
(2013)
On Hybrid Computer-Aided Tools to Interface Design Data.
Journal of Mechanics Engineering and Automation.
ISSN 2159-5275.
Volum 3.
Hefte 7.
s.397-404.
Lemu, Hirpa G.
(2013)
Study of the role of virtual engineering technologies in design.
I: Proceedings of IWAMA 2013 - The Third International Workshop of Advanced Manufacturing and Automation.
Tapir Akademisk Forlag.
ISBN 978-82-321-0377-5.
s.148-155.
Lemu, Hirpa G.
(2013)
Assessment of geometric tolerance information as a carrier of design intent to manufacturing and inspection.
I: Proceedings of IWAMA 2013 - The Third International Workshop of Advanced Manufacturing and Automation.
Tapir Akademisk Forlag.
ISBN 978-82-321-0377-5.
s.59-70.
Safari, Amir;
Lemu, Hirpa G.
(2012)
Optimum nurbs curve fitting for geometry parameterization of gas turbine blade's sections ; part 1: evolutionary optimization techniques.
I: International mechanical engineering congress and exposition.
The American Society of Mechanical Engineers (ASME).
ISBN 9780791845172.
Safari, Amir;
Lemu, Hirpa G.
(2012)
Optimum nurbs curve fitting for geometry parameterization of gas turbine blade’s sections ; part 2: swarm intelligence techniques.
I: International mechanical engineering congress and exposition.
The American Society of Mechanical Engineers (ASME).
ISBN 9780791845172.
TrzepieciĆski, Tomasz;
Lemu, Hirpa G.
(2012)
Application of Genetic Algorithms to Optimize Neural Networks for Selected Tribological Tests.
Journal of Mechanics Engineering and Automation.
ISSN 2159-5275.
Volum 2.
Hefte 2.
s.69-76.
Safari, Amir;
Lemu, Hirpa G.
(2012)
A comparative study of optimum bezier and NURBS curve fitting for measured point cloud of airfoil shapes.
I: Proceedings of IWAMA 2012 - The Second International Workshop of Advanced Manufacturing and Automation.
Tapir Akademisk Forlag.
ISBN 978-82-321-0110-8.
s.421-428.
Petrova, Radostina;
Lemu, Hirpa G.
(2012)
Design study for dynamic behavior of wind turbine blade.
I: Proceedings of IWAMA 2012 - The Second International Workshop of Advanced Manufacturing and Automation.
Tapir Akademisk Forlag.
ISBN 978-82-321-0110-8.
s.131-138.
Safari, Amir;
Saeidi, Hossein;
Gelgele, Hirpa Lemu
(2011)
Assessment of gas turbine compressor fouling effects on operation cost and performance of thermal power plants in Iran.
I: Proceedings of the 24th International Congress on Condition Monitoring and Diagnostics Engineering Management (COMADEM2011).
COMADEM International.
ISBN 0-9541307-2-3.
s.906-914.
Lemu, Hirpa G.
(2011)
Influence of Interference Fit and Surface Roughness on Contact Resistance of Tubing Connections.
Journal of Mechanics Engineering and Automation.
ISSN 2159-5275.
Volum 1.
Hefte 4.
s.285-292.
Lemu, Hirpa G.;
Frick, Jan;
Uhl, Tadeusz;
Lisowski, Wojciech;
Piwowarczyk, Piotr
(2011)
Study on Need Assessment of Mechatronics Education in Norway and Poland.
I: Advances in production management systems : value networks : innovatio n,technologies and management.
Universitetet i Stavanger.
ISBN 978-82-7644-461-2.
Gelgele, Hirpa Lemu;
Foggi, Jiregna Hirko
(2010)
Finite element based stress prediction for design of composite materials.
I: International Workshop of Advanced Manufacturing and Automation : (IWAMA2010) : 25-27th September, 2010, Shanghai University, Shanghai, China.
Tapir Akademisk Forlag.
ISBN 978-82-519-2518-1.
s.149-156.
Gelgele, Hirpa Lemu
(2010)
Study of Design Optimization Using Finite Element Method and Genetic Algorithm.
I: International Workshop of Advanced Manufacturing and Automation : (IWAMA2010) : 25-27th September, 2010, Shanghai University, Shanghai, China.
Tapir Akademisk Forlag.
ISBN 978-82-519-2518-1.
s.127-134.
Gelgele, Hirpa Lemu;
Foggi, Jiregna Hirko
(2010)
Finite Element Based Stress Prediction for Design of Composite Materials.
I: International Workshop of Advanced Manufacturing and Automation : (IWAMA2010) : 25-27th September, 2010, Shanghai University, Shanghai, China.
Tapir Akademisk Forlag.
ISBN 978-82-519-2518-1.
s.149-156.
Gelgele, Hirpa Lemu
(2006)
Study on CAD Integrated Analysis for Complex Structures.
I: Knowledge Enterprise: Intelligent Strategies in Product Design, Manufacturing and Management.
Springer.
s.673-678.
Formidling
Adugna, Yosef Wakjira;
Brüggemann, Heinrich;
Hafnor, Erik;
Djuv, Ane;
Paulsen, Aksel;
Hagland, Hanne Røland;
Lemu, Hirpa Gelgele
(2023)
A framework for the visualization of femoral fractures from Imaging to 3D Print.
National Conference for Additive Manufacturing 2023;
2023-03-21 - 2023-03-22.
Kelbesa, Weynishet D.;
Daba, Firankor T.;
Lemu, Hirpa G.
(2023)
Effect of Fiber Orientation on Water Absorption and Hardness of Lowland Bamboo Fiber Reinforced Composite.
IWAMA23 conference;
2023-10-15 - 2023-10-16.
Tesema, Edosa K.;
Lemu, Hirpa G.
(2023)
Topology Optimization of Plastic Shredding Machine Blade Carriage.
IWAMA23 conference;
2023-10-15 - 2023-10-16.
Tura, Amanuel;
Lemu, Hirpa G.;
Melaku, Lingerew E;
Mamo, Hana B.
(2022)
Impact of FDM 3D Printing Parameters on Compressive Strength and Printing Weight of PLA Components.
IWAMA Conference 2022;
2022-11-01 - 2022-11-02.
Adugna, Yosef Wakjira;
Lemu, Hirpa G.
(2022)
Comparative Evaluation of Stress Concentration Generated on Human Femur Structure Using Meshfree Software.
IWAMA Conference 2022;
2022-11-01 - 2022-11-02.
Wakjira, Yosef Adugna;
Lemu, Hirpa G.;
Akessa, Adugna Deressa
(2021)
Overview study on challenges of additive
manufacturing for a healthcare application.
COTech conference;
2021-11-26 - 2021-11-27.
Karlsen, Øyvind;
Lemu, Hirpa G.
(2021)
Safety related study of Expanding Pin systems application in lifting and drilling equipment within Construction, Offshore, and Marine sectors.
COTech Conference;
2021-11-25 - 2021-11-26.
Regassa, Yohannes;
Lemu, Hirpa G.;
Sirhabizu, Belete
(2021)
Burst strength analysis of composite overwrapped pressure vessel using finite element method.
COTech Conference;
2021-11-25 - 2021-11-26.
Tura, Amanuel;
Mamo, Hanna;
Jelila, Yohannis;
Lemu, Hirpa G.
(2021)
Experimental investigation and ANN prediction for part quality improvement of fused deposition modeling parts.
COTech Conference;
2021-11-25 - 2021-11-26.
Jiregna, Iyasu T;
Lemu, Hirpa G.
(2021)
Thermal stress analysis of disc brake using analytical and numerical methods.
COTech Conference;
2021-11-25 - 2021-11-26.
Nguyen, Bao;
Lemu, Hirpa G.;
Gabrielsen, Ole;
El-Thalji, Idriss
(2021)
Characterization of acoustic emission signals under 3-point bending test.
COTech Conference;
2021-11-25 - 2021-11-26.
Sirata, Goftila;
Lemu, Hirpa G.;
Waclawiak, Krzysztof ;
Jelila, Yohanis D.
(2021)
Study of rail-wheel contact problem by analytical and numerical approaches.
COTech Conference;
2021-11-25 - 2021-11-26.
Villoria, Bruno;
Siriwardane , Sudath C.;
Lemu, Hirpa G.
(2021)
Review on fatigue life assessment methods for welded joints in orthotropic steel decks of long-span bridges.
COTech Conference;
2021-11-25 - 2021-11-26.
Jelila, Yohanis D.;
Lemu, Hirpa G.;
pamula, WiesĆaw;
Sirata, Goftila
(2021)
Fatigue life analysis of wheel-rail contacts at railway turnouts using finite element modelling approach.
COTech Conference;
2021-11-25 - 2021-11-26.
Ambaye, Getachew A.;
Lemu, Hirpa Gelgele
(2021)
Numerical stress analysis and fatigue life prediction of the classical external Geneva mechanism.
IWAMA 2021;
2021-10-11 - 2021-10-12.
Dawit, Jonathan B.;
Lemu, Hirpa Gelgele;
Tewelde, Samrawit A.
(2021)
Tensile and Flexural Properties of Acacia Tortilis/Glass Fiber Reinforced Hybrid Composites.
IWAMA 2021;
2021-10-11 - 2021-10-12.
Daba, Frankor T.;
Lemu, Hirpa Gelgele
(2021)
Conceptual modelling and topology optimization framework of tower crane hook: A case study.
IWAMA 2021;
2021-10-11 - 2021-10-12.
Ambaye, Getachew A.;
Lemu, Hirpa Gelgele
(2020)
Dynamic analysis of spur gear with backlash using ADAMS.
International Conference & Exposition on Mechanical, Material and Manufacturing Technology(ICE3MT2020);
2020-10-09 - 2020-10-10.
Dawit, Jonathan B.;
Lemu, Hirpa Gelgele;
Regassa, Yohannes;
Akessa, Adugna Deressa
(2020)
Investigation of the mechanical properties of Acacia tortilis fiber reinforced natural composite.
International Conference & Exposition on Mechanical, Material and Manufacturing Technology(ICE3MT2020);
2020-10-09 - 2020-10-10.
Alemayehu, Samrawit;
Regassa, Yohannes;
Yoseph, Bisrath;
Lemu, Hirpa Gelgele
(2020)
Mechanical Properties Characterization of Water Hyacinth (“Emboch”) Plant for Use as Fiber Reinforced Polymer Composite.
8th EAI International Conference on Advancements of Science and Technology;
2020-10-02 - 2020-10-04.
Mohammed, Abdulbasit;
Lemu, Hirpa Gelgele;
Sirabizuh, Belete
(2020)
Statistical Analysis of Ethiopian Wind Power Potential at Selected Sites.
8th EAI International Conference on Advancements of Science and Technology;
2020-10-02 - 2020-10-04.
Regassa, Yohannes;
Lemu, Hirpa Gelgele;
Sirabizuh, Belete
(2020)
Nature Inspired Design in Fiber Orientation Trends for Reinforcement of Composites.
8th EAI International Conference on Advancements of Science and Technology;
2020-10-02 - 2020-10-04.
Tilahun, Nigatu D.;
Lemu, Hirpa Gelgele
(2020)
Mechanical Vibration Analysis of Fiber Reinforced Polymer Composite Beams Using Analytical and Numerical Methods.
8th EAI International Conference on Advancements of Science and Technology;
2020-10-02 - 2020-10-04.
Ambaye, Getachew A.;
Lemu, Hirpa Gelgele
(2020)
Effect of backlash on transmission error and time varying mesh stiffness.
10th International workshop of Advanced Manufacturing and Automation (IWAMA2020);
2020-10-12 - 2020-10-13.
Batu, Temesgen;
Lemu, Hirpa Gelgele
(2020)
Fatigue life study of false banana/glass fiber reinforced composite for wind turbine blade application.
10th International Workshop of Advanced Manufacturing and Automation (IWAMA2020);
2020-10-12 - 2020-10-13.
Jelila, Yohanis D.;
Lemu, Hirpa Gelgele
(2020)
Study of wheel-rail contacts at railway turnout using multibody dynamics simulation approach.
10th International Workshop of Advanced Manufacturing and Automation (IWAMA 2020);
2020-10-12 - 2020-10-13.
Lemu, Hirpa Gelgele
(2020)
Application of High-dimensional and Nature Inspired Approaches to Design Optimization of Energy Converters.
8th EAI International Conference on Advancements of Science and Technology;
2020-10-02 - 2020-10-04.
Lemu, Hirpa Gelgele
(2020)
Advances, opportunities and limitations of Additive Manufacturing Technology.
International Conference & Exposition on Mechanical, Material and Manufacturing Technology(ICE3MT2020);
2020-10-09 - 2020-10-10.
Marek, Kowalik;
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2019)
Effect of Pressing Parameters on the Quality of Joint Formation of Heat Exchanger Fins with the Base Plate.
9th Int. Conf. on Manufacturing Science and Education;
2019-06-05 - 2019-06-07.
Olana Terefe, Tesfaye;
Lemu, Hirpa G.;
K/Mariam, Addisu
(2019)
Review and synthesis of a walking machine (Robot) leg mechanism.
9th Int. Conf. on Manufacturing Science and Education;
2019-06-05 - 2019-06-07.
Akessa, Adugna Deressa;
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2019)
Numerical simulation of FDM manufactured parts by adopting approaches in composite material simulation.
Computational Methods in Offshore Technology;
2019-11-27 - 2019-11-29.
Aliyi, Abdulbasit M;
Lemu, Hirpa G.
(2019)
Case study on topology optimized design for additive manufacturing.
9th International Scientific Conference - Research and Development of Mechanical Elements and Systems (IRMES 2019);
2019-09-05 - 2019-09-07.
Regassa, Yohannes;
Lemu, Hirpa G.;
Sirabizuh, Belete
(2019)
Trends of using polymer composite materials in additive manufacturing.
9th International Scientific Conference - Research and Development of Mechanical Elements and Systems (IRMES 2019);
2019-09-05 - 2019-09-07.
Batu, Temesgen;
Lemu, Hirpa G.
(2019)
Comparative study of the effect of chord length computation methods in design of wind turbine blade.
9th International Workshop on Advanced Manufacturing and Automation;
2019-11-21 - 2019-11-22.
Karlsen, Øyvind;
Lemu, Hirpa G.
(2019)
On modelling techniques for Mechanical joints: Literature study.
9th International workshop on advanced manufacturing and automation;
2019-11-21 - 2019-11-22.
Karlsen, Øyvind;
Lemu, Hirpa G.
(2019)
Fretting fatigue and wear of mechanical joints: Literature study.
COTech & OGTech conference;
2019-11-27 - 2019-11-29.
Atteya, Mostafa Ahmed;
Mikkelsen, Ove;
Lemu, Hirpa G.
(2019)
State-of-the-art of crack propagation modelling in tubular joints.
COTech & OGTech conference;
2019-11-27 - 2019-11-29.
Woldemariam, Endashaw Tesfaye;
Lemu, Hirpa G.
(2019)
A machine Learning based framework for model approximation followed by design Optimization for expensive numerical simulation-based Optimization problems.
ISOPE 2019;
2019-06-16 - 2019-06-21.
Kopperstad, Karsten Mikal;
Lemu, Hirpa G.
(2018)
Design and Performance Study of Additive Manufactured Thrusters for Remotely Operated Underwater Vehicle.
International Society of Offshore and Polar Engineers (ISOPE);
2018-06-10 - 2018-06-15.
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2018)
Additive Manufacturing for the Manufacture of Gas Turbine Engine Components: Literature Review and Future Perspectives.
Turbo Expo 2018;
2018-06-17 - 2018-06-21.
Lemu, Hirpa G.
(2018)
On Opportunities and Limitations of Additive Manufacturing Technology for Industry 4.0 Era.
IWAMA2018;
2018-09-25 - 2018-09-26.
Mohammed, Abdulbasit;
Lemu, Hirpa G.
(2018)
Modelling Wind Turbine System Using Bond Graph Method.
IWAMA2018;
2018-09-25 - 2018-09-26.
Regassa, Yohannes;
Lemu, Hirpa G.
(2018)
Multibody System Modelling and Simulation: Case Study on Excavator Manipulator.
IWAMA 2018;
2018-09-25 - 2018-09-26.
Regassa, Yohannes;
Sirabizuh, Belete;
Lemu, Hirpa G.
(2018)
Review and Analysis of Processing Principles and Applications of Self-healing Composite Materials.
IWAMA 2018;
2018-09-25 - 2018-09-26.
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2018)
Effect of Process Parameters on Compressive Properties of ULTEM 9085 Produced by FDM Process.
IMECE2018;
2018-11-09 - 2018-11-15.
Lemu, Hirpa G.
(2018)
Influence of 3D Printing FDM Process Parameters on Tensile Property of ULTEM 9085..
GCMM2018;
2018-12-05 - 2018-12-07.
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2018)
FEM-based assessment of wear of stamping die.
The International Conference on Materials Research and Innovation;
2018-12-17 - 2019-05-21.
Lemu, Hirpa G.
(2017)
Assessment and Analysis of Structural Health Monitoring Techniques for Rotating Machines.
International Society of Offshore and Polar Engineers Conference, ISOPE 2017,;
2017-06-26 - 2017-06-30.
Lemu, Hirpa G.
(2017)
On Competition-driven Teaching of Multidisciplinary Engineering Education: Implementation cases at University of Stavanger.
MNT Conference;
2017-03-30 - 2017-03-31.
Trzepiecinski, Thomasz;
Fejkiel, Romuald;
Lemu, Hirpa G.
(2017)
Experimental Investigation of Frictional Resistances in the
Drawbead Region of the Sheet Metal Forming Processes.
4th AMMSE 2017;
2017-09-22 - 2017-09-24.
Vestli, Herman;
Lemu, Hirpa G.;
Svendsen, Bjørn Thomas;
Gabrielsen, Ole;
Siriwardane , S.A. Sudath C.
(2017)
Case Studies on Structural Health Monitoring of Offshore Bottom-fixed Steel Structures.
ISOPE 2017 International Ocean and Polar Engineering;
2017-06-25 - 2017-06-30.
Akessa, Adugna Deressa;
Lemu, Hirpa G.;
Gebisa, Aboma Wagari
(2017)
Mechanical Property Characterization of Additive Manufactured ABS Material Using Design of Experiment Approach.
ASME 2017 International Mechanical Engineering Congress and Exposition;
2017-11-03 - 2017-11-09.
Rege, Kristen;
Lemu, Hirpa G.
(2017)
A review of fatigue crack propagation modelling techniques using FEM and XFEM.
First Conference of Computational Methods in Offshore Technology - COTech 2017;
2017-11-30 - 2017-12-01.
Olsen, Erik Vasøy;
Lemu, Hirpa G.
(2016)
Mechanical testing of composite materials for monocoque design in Formula Student car.
International Journal of Social, Behavioral, Educational, Economic, Business and Industrial Engineering.
ISSN 2010-376X.
Volum 10.
Hefte 1.
s.1-8.
Taboada, Jose V.;
Lemu, Hirpa G.
(2016)
Analysis of Wave Energy Sources in the North Atlantic Waters in View of Design Challenges.
35th International Conference on Ocean, Offshore and Arctic Engineering OMAE 2016;
2016-06-19 - 2016-06-24.
Safari, Amir;
Hajikolaei, Kambiz Haji;
Lemu, Hirpa G.;
Wang, Gary G.
(2016)
A High-Dimensional Model Representation Guided PSO Methodology with Application on Compressor Airfoil Shape Optimization.
Turboexpo 2016,;
2016-06-13 - 2016-06-17.
Woldemariam, Endashaw Tesfaye;
Lemu, Hirpa G.
(2016)
Comparative analysis of computational methods in
Fluid-Structure Interaction: Temporal descretization and coupling techniques.
IWAMA – International Workshop of Advanced Manufacturing and Automation;
2016-11-10 - 2016-11-11.
Radostina, Petrova;
Assen, Mihailov;
Lemu, Hirpa G.
(2015)
Study of a Vertical Axis Wind Turbine Using Fluid Particle Trajectory.
ICMET 2015;
2015-07-01 - 2015-07-02.
Lemu, Hirpa G.
(2015)
Proposal for design-centered cloud computing in engineering
design and manufacturing.
IWAMA2015;
2015-10-22 - 2015-10-23.
Woldemariam, Endashaw Tesfaye;
Lemu, Hirpa G.
(2015)
Nonlinear isogeometric analysis in simulation-based design optimization: State-of-the-art analysis.
IWAMA2015;
2015-10-22 - 2015-10-23.
Radostina, Petrova;
Lemu, Hirpa G.
(2015)
Adaptability of surgical robot to guide its clamp operation along predefined path.
IWAMA2015;
2015-10-22 - 2015-10-23.
TrzepieciĆski, Tomasz;
Lemu, Hirpa G.
(2015)
A hybrid Method for Description of Frictional Resistance using Modified Bending Under Tension Friction Test
.
BALMATTRIB 2015;
2015-11-05 - 2015-11-06.
Safari, Amir;
Hajikolaei, Kambiz H.;
Wang, Gary G.;
Lemu, Hirpa G.
(2014)
Surrogate-assisted Self-accelerated Particle Swarm Optimization.
10th AIAA Multidisciplinary Design Optimization Conference;
2014-01-13 - 2014-01-17.
Radostina, Petrova;
Lemu, Hirpa G.
(2014)
Stress and displacement analysis of a HAWT under time-variable wind.
ASME 2014 International Mechanical Engineering Congress and Exposition IMECE2014;
2014-11-14 - 2014-11-20.
Ioan, Larion;
Lemu, Hirpa G.
(2014)
Study of Coanda effect applied to vertical Wind turbine blades.
ASME 2014 International Mechanical Engineering Congress and Exposition IMECE2014;
2014-11-14 - 2014-11-20.
Alemayehu W., Huluka;
Lemu, Hirpa G.
(2014)
Study and development of vehicle collision detection system.
ASME 2014 International Mechanical Engineering Congress and Exposition IMECE2014;
2014-11-14 - 2014-11-20.
Taboada, Jose V.;
Lemu, Hirpa G.;
Perez, Jose A.
(2014)
Comparative analysis of two offshore wave energy conversion devices: Cape Verde vs. Flexible Drive Line designs.
1st International Conference on Renewable Energies Offshore;
2014-11-24 - 2014-11-26.
Lemu, Hirpa G.
(2013)
Multibody dynamics simulation in design and performance analysis of energy conversion systems – a review.
NAFEMS Nordic Seminar 2013;
2013-02-05 - 2013-02-06.
Safari, Amir;
Lemu, Hirpa G.;
Mohsen, Assadi
(2013)
A Novel Combination of Adaptive Tools for Turbomachinery Airfoil Shape Optimization Using a Real-coded Genetic Algorithm.
ASME Turbo Expo 2013;
2013-06-03 - 2013-06-07.
Younis, Adel;
Safari, Amir;
Wang, G. Gary;
Lemu, Hirpa G.;
Dong, Zuomin
(2013)
SHAPE OPTIMIZATION OF TYPICAL HEAVY-DUTY GAS TURBINE COMPRESSOR AIROFOIL USING METAMODEL BASED ALGORITHM.
10th World Congress on Structural and Multidisciplinary Optimization;
2013-05-19 - 2013-05-24.
Safari, Amir;
Hajikolaei, Kambiz H.;
Lemu, Hirpa G.;
Wang, Gary G.;
Assadi, Mohsen
(2013)
Decomposition of High-Dimensional Shape Optimization Problems Through Quantifying Design Variable Correlation.
ASME IMECE 2013 Conference;
2013-11-15 - 2013-11-22.
Safari, Amir;
Lemu, Hirpa G.
(2012)
Optimum nurbs curve fitting for geometry parameterization of gas turbine blade’s sections ; part 2: swarm intelligence techniques.
International mechanical engineering congress and exposition;
2012-11-09 - 2012-11-15.
Safari, Amir;
Lemu, Hirpa G.
(2012)
Review of Recent Researches on Gas Turbine Blades Shape Optimization Techniques and Approaches.
Recent Advances and Challenges in Energy, RACE - 2012, Published in International Journal of Earth Sciences and Engineering, ISSN 0974-5904;
2012-01-04 - 2012-01-06.
Safari, Amir;
Lemu, Hirpa G.
(2012)
Optimum NURBS curve fitting for geometry parameterization of gas turbine blades’ sections: Part I – Evolutionary optimization techniques.
ASME 2012 International Mechanical Engineering Congress & Exposition;
2012-11-09 - 2012-11-15.
Safari, Amir;
Lemu, Hirpa G.;
Severson, Henning
(2012)
Geometric Modeling and Numerical Simulation of Airfoil Shapes Using Integrated MATLAB® and COMSOL Multiphysics®.
COMSOL Conference 2012;
2012-10-10 - 2012-10-12.
Lemu, Hirpa G.;
TrzepieciĆski, Tomasz
(2011)
FEM Based Deformability Analysis of Metal Forming: influence of material models and analysis approaches.
Proc. of MESIC 2011: 4th Manufacturing Society International Conference;
2011-09-21 - 2011-09-23.
Lemu, Hirpa G.
(2011)
Tolerances in Design and Strain Beyond Elastic Limit.
Competence Development and Experience Sharing;
2011-10-04 - 2011-12-02.
Lemu, Hirpa G.
(2011)
Transmission System Design and 2D/3D Finite Element Analysis.
Competence Development and Experience Sharing;
2011-12-05 - 2011-12-13.
Said, Hossein;
Safari, Amir;
Lemu, Hirpa G.
(2011)
A Quantitative Prediction of Axial Compressor Performance Deterioration Using Fouling Full 3D Modeling.
International Conference on Applied Energy;
2011-05-16 - 2011-05-18.
Uhl, Tadeusz;
Lisowski, Wojciech;
Prosak, Daniel;
Frick, Jan;
Lemu, Hirpa G.
(2011)
Analysis of Companies' Needs Related to the Mechatronics Study Graduates.
Summary Conference on Project FSS/2008/x/D5/W/0045;
2011-05-23 - 2011-05-24.
Gelgele, Hirpa Lemu
(2010)
Finite Element Methods in Strength Analysis of Orthopedics Devices.
Annual Conference of Norwegian Society of Orthopedics Engineers;
2010-10-06 - 2010-10-07.
Gelgele, Hirpa Lemu
(2010)
Rapid Prototyping - A manufacturing Tool for Orthopedics Devices.
Annual Conference of Norwegian Society of Orthopedics Engineers;
2010-10-06 - 2010-10-07.
Gelgele, Hirpa Lemu
(2010)
Experimental study and Finite Element Analysis of Expandable Tubulars.
utenTitteltekst;
2010-05-08 - 2010-05-12.
Gelgele, Hirpa Lemu
(2010)
How to Use ANSYS for Strength Analysis - Application Examples for Students and Teaching Staff.
utenTitteltekst;
2010-11-29 - 2010-12-03.
Gelgele, Hirpa Lemu
(2009)
Study of Contact Area and Contact Resistance in Contact Design of Tubing Connections.
13th International Research/Expert Conference on Trends in the Development of Machinery and Associated Technology;
2009-09-21 - 2009-09-26.
Gelgele, Hirpa Lemu
(2009)
Design and Analysis of Machines and Mechanisms.
utenTitteltekst;
2009-05-04 - 2009-05-09.
Gelgele, Hirpa Lemu
(2008)
Dimensjonering av maskinelementer.
Gelgele, Hirpa Lemu
(2008)
Introductory Tutorials in Using ANSYS 11 and MATLAB.
Gelgele, Hirpa Lemu
(2007)
Preliminary Study of Tubular Expansion Using Finite Element Methods.
11th International Research/Expert Conf. "Trends in the Development of Machinery and Associated Technology", TMT 2007;
2007-09-05 - 2007-09-09.
Gelgele, Hirpa Lemu
(2006)
Challenges of Knowledge Discovery and Management.
Seminar i Naturvitenskap, UiS;
2006-03-23.
Gelgele, Hirpa Lemu
(2006)
Finite Element Based Genetic Algorithm for Structural Design Optimization.
10th INTERNATIONAL RESEARCH/EXPERT CONFERENCE, TMT 2006;
2006-09-11 - 2006-09-15.
Gelgele, Hirpa Lemu
(2005)
Stress Concentration Analysis in Pressure Vessels Using Finite Element Method.
9th International Research/Expert Conference, TMT 2005;
2005-09-26 - 2005-09-30.
Gelgele, Hirpa Lemu
(2004)
The TSP Scenario for Optimized Sequencing of Machining Operations.
The 8th Int. Research/Expert Conference ?Trends in the Development of Machinery and Associated Technology? TMT 2004;
2004-09-15.
Gelgele, Hirpa Lemu
(2003)
Solving Manufacturing System Problems Using Hybrid Genetic Algorithm and Artificial Neural Networks.
7th Int.Research/Expert Conference ”Trends in the Development of Machinery and Associated Technology" TMT 2003;
2003-09-15 - 2003-09-17.
Gelgele, Hirpa Lemu;
Wang, Kesheng
(2002)
Modelling and Optimation of Machining Process Using Hybrid Computational Intelligence Approach.
International conference on Computer Systems and Technologies;
2002-06-20 - 2002-06-21.
