-
Gopal, Mahesh;
Lemu, Hirpa G.;
Gutema, Endalkachew Mosisa
(2023)
Sustainable Additive Manufacturing and Environmental
Implications: Literature Review.
Sustainability.
ISSN 2071-1050.
Volum 15.
DOI: 10.3390/su15010504
-
-
Gurmesa, Fakada Dabalo;
Lemu, Hirpa G.
(2023)
Literature Review on Thermomechanical Modelling and Analysis of Residual Stress Effects in Wire Arc Additive Manufacturing.
Metals.
ISSN 2075-4701.
Volum 13.
Hefte 3.
DOI: 10.3390/met13030526
-
-
Dejene, Naol Dessalegn;
Lemu, Hirpa G.
(2023)
Current Status and Challenges of Powder Bed Fusion-Based Metal Additive Manufacturing: Literature Review.
Metals.
ISSN 2075-4701.
Volum 13.
Hefte 2.
DOI: 10.3390/met13020424
-
-
Kedir, Yahiya Ahmed;
Lemu, Hirpa G.
(2023)
Prediction of Fatigue Crack Initiation under Variable Amplitude Loading: Literature Review.
Metals.
ISSN 2075-4701.
Volum 13.
Hefte 3.
DOI: 10.3390/met13030487
-
-
Bekele, Abera E.;
Lemu, Hirpa G.;
Jiru, Moera G.
(2023)
Study of the Effects of Alkali Treatment and Fiber Orientation on Mechanical Properties of Enset/Sisal Polymer Hybrid Composite.
Journal of Composites Science.
ISSN 2504-477X.
Volum 7.
Hefte 1.
DOI: 10.3390/jcs7010037
-
-
Trzepieciński, Tomasz;
Batu, Temesgen;
Kibrete, Fasikaw;
Lemu, Hirpa G.
(2023)
Application of Composite Materials for Energy Generation Devices.
Journal of Composites Science.
ISSN 2504-477X.
Volum 7.
Hefte 2.
DOI: 10.3390/jcs7020055
-
-
Tura, Amanuel;
Lemu, Hirpa G.;
Melaku, Lingerew E;
Mamo, Hana B.
(2023)
Impact of FDM 3D Printing Parameters on Compressive Strength and Printing Weight of PLA Components.
I: Advanced Manufacturing and Automation XII. Conference proceedings IWAMA 2022..
Springer.
ISBN 978-981-19-9338-1.
s.495-504.
DOI: 10.1007/978-981-19-9338-1_60
-
-
Adugna, Yosef Wakjira;
Lemu, Hirpa G.
(2023)
Comparative Evaluation of Stress Concentration Generated on Human Femur Structure Using Meshfree Software.
I: Advanced Manufacturing and Automation XII.
Springer.
ISBN 978-981-19-9337-4.
s.458-470.
DOI: 10.1007/978-981-19-9338-1_56
-
-
Bekele, Abera E.;
Lemu, Hirpa Gelgele;
Jiru, Moera G.
(2022)
Exploration of Mechanical Properties of Enset–Sisal Hybrid Polymer Composite.
Fibers.
ISSN 2079-6439.
Volum 10.
Hefte 2.
DOI: 10.3390/fib10020014
-
-
Regassa, Yohannes;
Gari, Jema;
Lemu, Hirpa Gelgele
(2022)
Composite Overwrapped Pressure Vessel Design Optimization Using Numerical Method.
Journal of Composites Science.
ISSN 2504-477X.
Volum 6.
Hefte 8.
DOI: 10.3390/jcs6080229
-
-
Bekele, Abera E.;
Lemu, Hirpa Gelgele;
Jiru, Moera G.
(2022)
Study of Machinability in Drilling Operation of Enset–Sisal Hybrid Polyester Composite.
Journal of Composites Science.
ISSN 2504-477X.
Volum 6.
Hefte 7.
DOI: 10.3390/jcs6070205
-
-
Yeshanew , Desalegn A.;
Jiru, Moera G.;
Lemu, Hirpa Gelgele;
Tolcha, Mesay A.
(2022)
Internal Corrosion Damage Mechanisms of the Underground Water Pipelines.
Advances in Science and Technology Research Journal.
ISSN 2299-8624.
Volum 16.
Hefte 3.
s.111-123.
DOI: 10.12913/22998624/149369
-
-
Tura, Amanuel Diriba;
Lemu, Hirpa Gelgele;
Mamo, Hana Beyene
(2022)
Experimental Investigation and Prediction of Mechanical Properties in a Fused Deposition Modeling Process.
Crystals.
ISSN 2073-4352.
Volum 12.
Hefte 6.
DOI: 10.3390/cryst12060844
-
-
Karlsen, Øyvind;
Lemu, Hirpa Gelgele
(2022)
Comparative study on loosening of anti-loosening bolt and standard bolt system.
Engineering Failure Analysis.
ISSN 1350-6307.
Volum 140.
DOI: 10.1016/j.engfailanal.2022.106590
-
-
Trzepieciński, Tomasz;
Najm, Sherwan Mohammed;
Lemu, Hirpa Gelgele
(2022)
Current Concepts for Cutting Metal-Based and Polymer-Based Composite Materials.
Journal of Composites Science.
ISSN 2504-477X.
Volum 6.
Hefte 5.
DOI: 10.3390/jcs6050150
-
-
Tolcha, Mesay A.;
Ademe, Getasew Andargie;
Jelila, Yohanis D.;
Jiru, Moera G.;
Lemu, Hirpa G.
(2022)
Analyzing the effect of vibration on crack growth on shaft using fuzzy logic.
Meccanica (Milano. Print).
ISSN 0025-6455.
DOI: 10.1007/s11012-022-01609-2
-
-
Karlsen, Øyvind;
Lemu, Hirpa G.;
Berkani, Imad
(2022)
A Novel Technique for Temporarily Repair and Improvement of Damaged Pin Joint Support Bores.
Applied Mechanics.
Volum 3.
Hefte 4.
s.1206-1222.
DOI: 10.3390/applmech3040069
-
-
Akessa, Adugna Deressa;
Tucho, Wakshum Mekonnen;
Lemu, Hirpa Gelgele;
Grønsund, Jørgen
(2022)
Investigations of the Microstructure and Mechanical Properties of 17-4 PH ss Printed Using a MarkForged Metal X.
Materials.
ISSN 1996-1944.
Volum 15.
Hefte 19.
DOI: 10.3390/ma15196898
-
-
Mohammed, Abdulbasit;
Sirahbizu, Belete;
Lemu, Hirpa Gelgele
(2022)
Optimal Rotary Wind Turbine Blade Modeling with Bond Graph Approach for Specific Local Sites.
Energies.
ISSN 1996-1073.
Volum 15.
Hefte 18.
DOI: 10.3390/en15186858
-
-
Gutema, Endalkachew Mosisa;
Gopal, Mahesh;
Lemu, Hirpa Gelgele
(2022)
Temperature Optimization by Using Response Surface Methodology and Desirability Analysis of Aluminium 6061.
Materials.
ISSN 1996-1944.
Volum 15.
Hefte 17.
DOI: 10.3390/ma15175892
-
-
Tura, Amanuel Diriba;
Lemu, Hirpa Gelgele;
Mamo, Hana Beyene;
Santhosh, A. Johnson
(2022)
Prediction of tensile strength in fused deposition modeling process using artificial neural network and fuzzy logic.
Progress in Additive Manufacturing.
ISSN 2363-9512.
DOI: 10.1007/s40964-022-00346-y
-
-
Ambaye, Getachew A.;
Lemu, Hirpa Gelgele
(2022)
Numerical stress analysis and fatigue life prediction of the classical external Geneva mechanism.
I: Advanced Manufacturing and Automation XI
Conference proceedings IWAMA 2021.
Springer.
ISBN 978-981-19-0572-8.
s.176-186.
DOI: 10.1007/978-981-19-0572-8_23
-
-
Dawit, Jonathan B.;
Lemu, Hirpa Gelgele;
Tewelde, Samrawit A.
(2022)
Tensile and Flexural Properties of Acacia Tortilis/Glass Fiber Reinforced Hybrid Composites.
I: Advanced Manufacturing and Automation XI
Conference proceedings IWAMA 2021.
Springer.
ISBN 978-981-19-0572-8.
s.187-197.
DOI: 10.1007/978-981-19-0572-8_24
-
-
Daba, Frankor T.;
Lemu, Hirpa Gelgele
(2022)
Conceptual modelling and topology optimization framework of tower crane hook: A case study.
I: Advanced Manufacturing and Automation XI
Conference proceedings IWAMA 2021.
Springer.
ISBN 978-981-19-0572-8.
s.531-539.
DOI: 10.1007/978-981-19-0572-8_68
-
-
Ambaye, Getachew A.;
Lemu, Hirpa Gelgele;
Tolcha, Mesay A.
(2022)
Contact temperature analysis of the classical Geneva mechanism through numerical methods.
Materials Today: Proceedings.
ISSN 2214-7853.
Volum 57.
Hefte 2.
s.545-552.
DOI: 10.1016/j.matpr.2022.01.420
-
-
Amena, Berhanu Tolessa;
Altenbach, Holm;
Tiba, Getachew Shunki;
Lemu, Hirpa G.
(2022)
Analysis Of the Negative Impacts of Coffee Husk on The Local Environment Of Ethiopia .
European Chemical Bulletin (ECB).
Volum 11.
Hefte 11.
s.18-26.
DOI: 10.31838/ecb/2022.11.11.003
-
-
Gutema, Endalkachew Mosisa;
Gopal, Mahesh;
Lemu, Hirpa Gelgele
(2022)
Minimization of Surface Roughness and Temperature during Turning of Aluminum 6061 Using Response Surface Methodology and Desirability Function Analysis.
Materials.
ISSN 1996-1944.
Volum 15.
Hefte 21.
DOI: 10.3390/ma15217638
-
-
Tewelde, Samrawit A;
Lemu, Hirpa G.;
Dawit, Jonathan B
(2022)
Mechanical property characterization of water hyacinth and glass fiber reinforced hybrid composite.
Materials Today: Proceedings.
ISSN 2214-7853.
Volum 62.
Hefte 12.
s.6445-6449.
DOI: 10.1016/j.matpr.2022.04.115
-
-
Bena, Welteji;
Lemu, Hirpa Gelgele
(2022)
Analysis of Thermomechanical Cracks of Disc Brake Used in Heavy Trucks.
International Review of Mechanical Engineering (IREME).
ISSN 1970-8734.
Volum 16.
Hefte 7.
s.365-372.
DOI: 10.15866/ireme.v16i7.22331
-
-
Karlsen, Øyvind;
Lemu, Hirpa G.;
Berkani, Imad
(2022)
An investigation of the effects and consequences of combining Expanding Dual Pin with radial spherical plain bearings.
Applied Mechanics.
Volum 3.
Hefte 2.
s.573-589.
DOI: 10.3390/applmech3020034
-
-
Salahshour Langeroodi, Soheil;
Karlsen, Øyvind;
Lemu, Hirpa G.
(2022)
Experimental and Numerical Studies of Stress Distribution in an Expanding Pin Joint System.
Applied Mechanics.
Volum 3.
Hefte 1.
s.46-63.
DOI: 10.3390/applmech3010003
-
-
Trzepiecinski, Tomasz;
dell’Isola, Francesco;
Lemu, Hirpa G.
(2021)
Multiphysics Modeling and Numerical Simulation in
Computer-Aided Manufacturing Processes.
Metals.
ISSN 2075-4701.
Volum 11.
Hefte 1.
DOI: 10.3390/met11010175
-
-
Lemu, Hirpa Gelgele;
Mikkelsen, Ove
(2021)
Experience in Use of 3D Printing in Engineering Education at University of Stavanger.
Nordic Journal of STEM Education.
ISSN 2535-4574.
Volum 5.
Hefte 1.
DOI: 10.5324/njsteme.v5i1.3934
-
-
Regassa, Yohannes;
Lemu, Hirpa G.;
Sirhabizu, Belete
(2021)
Investigation of spider web oriented composite fabrics burst strength.
AIMS Materials Science.
ISSN 2372-0484.
Volum 8.
Hefte 4.
s.622-639.
DOI: 10.3934/matersci.2021038
-
-
Alemyayehu, Samrawit;
Regassa, Yohannes;
Yoseph, Bisrath;
Lemu, Hirpa Gelgele
(2021)
Mechanical properties characterization of water hyacinth (Emboch) plant for use as fiber reinforced polymer composite.
I: Advances of Science and Technology : 8th EAI International Conference : ICAST 2020, Bahir Dar, Ethiopia, October 2-4, 2020 : Proceedings : Part II.
Springer.
ISBN 9783030806170.
s.482-492.
DOI: 10.1007/978-3-030-80618-7_33
-
-
Mohammed, Abdulbasit;
Lemu, Hirpa Gelgele;
Sirahbizu, Belete
(2021)
Statistical analysis of Ethiopian wind power potential at selected sites.
I: Advances of Science and Technology : 8th EAI International Conference : ICAST 2020, Bahir Dar, Ethiopia, October 2-4, 2020 : Proceedings : Part II.
Springer.
ISBN 9783030806170.
s.370-381.
DOI: 10.1007/978-3-030-80618-7_25
-
-
Tilahun, Nigato D.;
Lemu, Hirpa Gelgele
(2021)
Mechanical vibration analysis of fiber reinforced polymer composite beams using analytical and numerical methods.
I: Advances of Science and Technology : 8th EAI International Conference : ICAST 2020, Bahir Dar, Ethiopia, October 2-4, 2020 : Proceedings : Part II.
Springer.
ISBN 9783030806170.
s.357-369.
DOI: 10.1007/978-3-030-80618-7_24
-
-
Regassa, Yohannes;
Lemu, Hirpa Gelgele;
Sirabizuh, Belete
(2021)
Nature inspired design in fiber orientation trends for reinforcement of composites.
I: Advances of Science and Technology : 8th EAI International Conference : ICAST 2020, Bahir Dar, Ethiopia, October 2-4, 2020 : Proceedings : Part II.
Springer.
ISBN 9783030806170.
s.382-394.
DOI: 10.1007/978-3-030-80618-7_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.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 1201.
DOI: 10.1088/1757-899X/1201/1/012036
-
-
Sirata, Goftila;
Lemu, Hirpa G.;
Waclawiak, Krzysztof ;
Jelila, Yohanis D.
(2021)
Study of rail-wheel contact problem by analytical and numerical approaches.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 1201.
DOI: 10.1088/1757-899X/1201/1/012035
-
-
Jelila, Yohanis D.;
Lemu, Hirpa G.;
Pamula, Wiesław;
Sirata, Goftila
(2021)
Fatigue life analysis of wheel-rail contacts at railway turnouts using finite element modelling approach.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 1201.
DOI: 10.1088/1757-899X/1201/1/012047
-
-
Trzepieciński, Tomasz;
Najm, Sherwan M;
Sbayti, Manel;
Belhadjsalah, Hedi;
Szpunar, Marcin;
Lemu, Hirpa G.
(2021)
New Advances and Future Possibilities in Forming Technology of Hybrid Metal–Polymer Composites Used in Aerospace Applications.
Journal of Composites Science.
ISSN 2504-477X.
Volum 5.
Hefte 8.
DOI: 10.3390/jcs5080217
-
-
Jelila, Yohanis D.;
Lemu, Hirpa G.
(2021)
Study of wheel-rail contacts at railway turnout using multibody dynamics simulation approach.
I: Advanced manufacuring and automation X.
Springer Nature.
ISBN 9789813363175.
s.371-379.
DOI: 10.1007%2F978-981-33-6318-2_46
-
-
Batu, Temesgen;
Lemu, Hirpa G.
(2021)
Fatigue life study of false banana/glass fiber reinforced composite for wind turbine blade application.
I: Advanced manufacuring and automation X.
Springer Nature.
ISBN 9789813363175.
s.29-40.
DOI: 10.1007/978-981-33-6318-2_4
-
-
Ambaye, Getachew A.;
Lemu, Hirpa G.
(2021)
Effect of backlash on transmission error and time varying mesh stiffness.
I: Advanced manufacuring and automation X.
Springer Nature.
ISBN 9789813363175.
s.18-28.
DOI: 10.1007/978-981-33-6318-2_3
-
-
Adugna, Yosef Wakjira;
Akessa, Adugna Deressa;
Lemu, Hirpa G.
(2021)
Overview study on challenges of additive
manufacturing for a healthcare application.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 1201.
DOI: 10.1088/1757-899X/1201/1/012041
-
-
Trzepieciński, Tomasz;
Lemu, Hirpa G.;
Chodoła, Łukasz;
Ficek, Daniel
(2021)
Modelling Anisotropic Phenomena of Friction of Deep-Drawing Quality Steel Sheets Using Artificial Neural Networks.
Advances in Materials Science (AMS).
ISSN 1730-2439.
Volum 21.
Hefte 3.
DOI: 10.2478/adms-2021-0016
-
-
Jiregna, Iyasu T;
Lemu, Hirpa G.
(2021)
Thermal stress analysis of disc brake using analytical and numerical methods.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 1201.
DOI: 10.1088/1757-899X/1201/1/012033
-
-
Regassa, Yohannes;
Lemu, Hirpa Gelgele;
Sirabizuh, Belete;
Rahimeto, Samuel
(2021)
Studies on the Geometrical Design of Spider Webs for
Reinforced Composite Structures.
Journal of Composites Science.
ISSN 2504-477X.
Volum 5.
DOI: 10.3390/jcs5020057
-
-
Helle, Robin Heimli;
Lemu, Hirpa Gelgele
(2021)
A case study on use of 3D scanning for reverse engineering and quality control.
Materials Today: Proceedings.
ISSN 2214-7853.
Volum 45.
s.5255-5262.
DOI: 10.1016/j.matpr.2021.01.828
-
-
Tolcha, Mesay Alemu;
Jiru, Moera Gutu;
Lemu, Hirpa Gelgele
(2021)
Experimental Investigation of Al-CuMgMn Alloy Developed by Laser Beam Surface Modification for Wear Resistance.
Metals.
ISSN 2075-4701.
Volum 11.
Hefte 5.
s.1-15.
DOI: 10.3390/met11050712
-
-
Batu, Temesgen;
Lemu, Hirpa Gelgele;
G. Michael, Elias
(2021)
Multi objective parametric optimization and composite material performance study for master leaf spring.
Materials Today: Proceedings.
ISSN 2214-7853.
Volum 45.
s.5347-5353.
DOI: 10.1016/j.matpr.2021.01.925
-
-
Mohammed, Abdulbasit;
Lemu, Hirpa Gelgele;
Sirahbizu, Belete
(2021)
Determining Optimum Rotary Blade Design for Wind-Powered
Water-Pumping Systems for Local Selected Sites.
Strojniski vestnik.
ISSN 0039-2480.
Volum 67.
Hefte 5.
s.214-222.
DOI: 10.5545/sv-jme.2021.7140
-
-
Bekele, Abera E.;
Lemu, Hirpa G.;
Jiru, Moera G.
(2021)
Experimental study of physical, chemical and mechanical properties of enset and sisal fibers.
Polymer testing.
ISSN 0142-9418.
Volum 106.
DOI: 10.1016/j.polymertesting.2021.107453
-
-
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.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 1201.
DOI: 10.1088/1757-899X/1201/1/012026
-
-
Regassa, Yohannes;
Lemu, Hirpa G.;
Sirhabizu, Belete
(2021)
Burst strength analysis of composite overwrapped pressure vessel using finite element method.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 1201.
DOI: 10.1088/1757-899X/1201/1/012029
-
-
Nguyen, Bao Gia Ngoc;
Lemu, Hirpa G.;
Gabrielsen, Ole;
El-Thalji, Idriss
(2021)
Characterization of acoustic emission signals under 3-point bending test.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 1201.
DOI: 10.1088/1757-899X/1201/1/012034
-
-
Tura, Amanuel;
Mamo, Hanna;
Jelila, Yohannis;
Lemu, Hirpa G.
(2021)
Experimental investigation and ANN prediction for part quality improvement of fused deposition modeling parts.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 1201.
DOI: 10.1088/1757-899X/1201/1/012031
-
-
Akhtar, Muhammad Maaz;
Karlsen, Øyvind;
Lemu, Hirpa Gelgele
(2021)
Study of Bondura® Expanding PIN System – Combined Axial and Radial Locking System .
Strojniski vestnik.
ISSN 0039-2480.
Volum 67.
Hefte 12.
s.625-634.
DOI: 10.5545/SV-JME.2021.7306
-
-
Lemu, Hirpa Gelgele;
Karlsen, Øyvind
(2021)
Questionnarie-based Survey of Experiences with the Use of Expanding PIN Systems in Mechanical Joints.
Results in Engineering (RINENG).
ISSN 2590-1230.
Volum 9.
DOI: 10.1016/j.rineng.2021.100212
-
-
Batu, Temesgen;
Lemu, Hirpa Gelgele
(2020)
Investigation of mechanical properties of false banana/glass fiber reinforced hybrid composite materials.
Results in Materials.
ISSN 2590-048X.
Volum 8.
DOI: 10.1016/j.rinma.2020.100152
-
-
Trzepiecinski, Tomasz;
Lemu, Hirpa G.
(2020)
Recent developments and trends in the friction testing for conventional sheet metal forming and incremental sheet forming.
Metals.
ISSN 2075-4701.
Volum 10.
Hefte 1.
s.1-34.
DOI: 10.3390/met10010047
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2020)
Effect of Lubrication on Friction in Bending under
Tension Test-Experimental and Numerical Approach.
Metals.
ISSN 2075-4701.
Volum 10.
Hefte 4.
DOI: 10.3390/met10040544
-
-
Ambaye, Getachew A.;
Lemu, Hirpa Gelgele
(2020)
Dynamic analysis of spur gear with backlash using ADAMS.
Materials Today: Proceedings.
ISSN 2214-7853.
DOI: 10.1016/j.matpr.2020.09.309
-
-
Batu, Temesgen;
Lemu, Hirpa G.;
Sirhabizuh, Belete
(2020)
Study of the Performance of Natural Fiber Reinforced Composites for Wind Turbine Blade Applications.
Advances in Science and Technology Research Journal.
ISSN 2299-8624.
Volum 14.
Hefte 2.
s.67-75.
DOI: 10.12913/22998624/118201
-
-
Dawit, Jonathan B.;
Lemu, Hirpa Gelgele;
Regassa, Yohannes;
Akessa, Adugna Deressa
(2020)
Investigation of the mechanical properties of Acacia tortilis fiber reinforced natural composite.
Materials Today: Proceedings.
ISSN 2214-7853.
DOI: 10.1016/j.matpr.2020.09.308
-
-
Trzepieciński, Tomasz;
Lemu, Hirpa G.
(2020)
Improving Prediction of Springback in Sheet Metal Forming Using Multilayer Perceptron-Based Genetic Algorithm.
Materials.
ISSN 1996-1944.
Volum 13.
DOI: 10.3390/ma13143129
-
-
Ambaye, Getachew A.;
Lemu, Hirpa G.
(2020)
Numerical Study of Effect of Backlash on Flash Temperature of Spur Gear.
International Review of Mechanical Engineering (IREME).
ISSN 1970-8734.
Volum 14.
Hefte 11.
s.684-692.
DOI: 10.15866/ireme.v14i11.19763
-
-
Karlsen, Øyvind;
Lemu, Hirpa G.
(2020)
On Modelling Techniques for Mechanical Joints: Literature Study.
I: Advanced manufacturing and automation IX.
Springer.
ISBN 9789811523410.
s.116-125.
DOI: 10.1007/978-981-15-2341-0_15
-
-
Batu, Temesgen;
Lemu, Hirpa G.
(2020)
Comparative study of the effect of chord length computation methods in design of wind turbine blade.
I: Advanced manufacturing and automation IX.
Springer.
ISBN 9789811523410.
s.106-115.
DOI: 10.1007/978-981-15-2341-0_14
-
-
Dawit, Jonathan B.;
Regassa, Yohannes;
Lemu, Hirpa G.
(2020)
Property characterization of acacia tortilis for natural fiber reinforced polymer composite.
Results in Materials.
ISSN 2590-048X.
Volum 5.
DOI: 10.1016/j.rinma.2019.100054
-
-
Terefe, Tesfaye Olana;
Lemu, Hirpa G.;
K/Mariam, Addisu
(2019)
Review and synthesis of a walking machine (Robot) leg mechanism.
MATEC Web of Conferences.
ISSN 2261-236X.
Volum 290.
DOI: 10.1051/matecconf/201929008012
-
-
Kebede, Bisrat M.;
Lemu, Hirpa G.
(2019)
Design, simulation and production of hydraulic briquette press for metal chips.
Advances in Science and Technology Research Journal.
ISSN 2299-8624.
Volum 13.
Hefte 2.
s.24-30.
DOI: 10.12913/22998624/105809
-
-
Mohammed, Abdulbasit;
Lemu, Hirpa G.
(2019)
Wind Turbine System Modelling Using Bond Graph Method.
Lecture Notes in Electrical Engineering.
ISSN 1876-1100.
Volum 484.
s.95-105.
DOI: 10.1007/978-981-13-2375-1_14
-
-
Woldemariam, Endashaw Tesfaye;
Lemu, Hirpa G.
(2019)
Numerical simulation-based effect characterization and design Optimization of micro cross-flow turbine.
Strojniski vestnik.
ISSN 0039-2480.
Volum 65.
Hefte 6.
s.386-397.
DOI: 10.5545/sv-jme.2018.5901
-
-
Tolcha, Mesay Alemu;
Lemu, Hirpa G.
(2019)
Modeling Thermomechanical Stress with H13 Tool Steel Material Response for Rolling Die under Hot Milling.
Metals.
ISSN 2075-4701.
Volum 9.
Hefte 5.
DOI: 10.3390/met9050495
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2019)
FEM-based assessment of wear of stamping die.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 526.
DOI: 10.1088/1757-899X/526/1/012002
-
-
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.
MATEC Web of Conferences.
ISSN 2261-236X.
Volum 290.
DOI: 10.1051/matecconf/201929003009
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2019)
A Three-Dimensional Elastic-Plastic Contact Analysis
of Vickers Indenter on a Deep Drawing Quality
Steel Sheet.
Materials.
ISSN 1996-1944.
Volum 12.
DOI: 10.3390/ma12132153
-
-
Garcia-Granada, Andres;
Catafal-Pedragosa, Joan;
Lemu, Hirpa G.
(2019)
Topology optimization through stiffness/weight ratio analysis for a three-point bending test of additive manufactured parts.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 700.
Hefte 1.
DOI: 10.1088/1757-899X/700/1/012012
-
-
Regassa, Yohannes;
Lemu, Hirpa G.;
Sirabizuh, Belete
(2019)
Trends of using polymer composite materials in additive manufacturing.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 659.
Hefte 1.
DOI: 10.1088/1757-899X/659/1/012021
-
-
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2019)
Influence of 3D Printing FDM Process Parameters on Tensile Property of ULTEM 9085.
Procedia Manufacturing.
ISSN 2351-9789.
Volum 30.
s.331-338.
DOI: 10.1016/j.promfg.2019.02.047
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2019)
Finite element method-based modeling of bending under tension friction test of deep drawing quality steel sheets.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 504.
Hefte 1.
DOI: 10.1088/1757-899X/504/1/012068
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2019)
Numerical analysis of the influence of friction conditions on the pile-up effect in Vickers hardness measurements.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 700.
Hefte 1.
DOI: 10.1088/1757-899X/700/1/012019
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2019)
Prediction of springback in the air V-bending of metallic sheets.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 645.
Hefte 1.
DOI: 10.1088/1757-899X/645/1/012011
-
-
Atteya, Mostafa Ahmed;
Mikkelsen, Ove;
Lemu, Hirpa G.
(2019)
State-of-the-art of crack propagation modelling in tubular joints.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 700.
Hefte 1.
DOI: 10.1088/1757-899X/700/1/012035
-
-
Terefe, Tesfaye O.;
Lemu, Hirpa G.;
K/Mariam, Addisu;
Tuli, Tadele B.
(2019)
Kinematic Modeling and Analysis of a Walking Machine (Robot)
Leg Mechanism on a Rough Terrain.
Advances in Science and Technology Research Journal.
ISSN 2299-8624.
Volum 13.
Hefte 3.
s.43-53.
DOI: 10.12913/22998624/109792
-
-
Aliyi, Abdissa M;
Lemu, Hirpa G.
(2019)
Case study on topology optimized design for additive manufacturing.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 659.
Hefte 1.
s.1-9.
DOI: 10.1088/1757-899X/659/1/012020
-
-
Karlsen, Øyvind;
Lemu, Hirpa G.
(2019)
Fretting fatigue and wear of mechanical joints: Literature study.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 700.
Hefte 1.
DOI: 10.1088/1757-899X/700/1/012015
-
-
Akessa, Adugna Deressa;
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2019)
Numerical simulation of FDM manufactured parts by adopting approaches in composite material simulation.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 700.
Hefte 1.
DOI: 10.1088/1757-899X/700/1/012016
-
-
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.
-
-
Regassa, Yohannes;
Lemu, Hirpa G.
(2019)
Multibody System Modelling and Simulation: Case Study on Excavator Manipulator.
I: Advanced Manufacturing and Automation VIII Proceedings IWAMA 2018.
Springer.
ISBN 978-981-13-2375-1.
s.628-635.
DOI: 10.1007/978-981-13-2375-1_79
-
-
Regassa, Yohannes;
Sirabizuh, Belete;
Lemu, Hirpa G.
(2019)
Review and Analysis of Processing Principles and Applications of Self-healing Composite Materials.
I: Advanced Manufacturing and Automation VIII Proceedings IWAMA 2018.
Springer.
ISBN 978-981-13-2375-1.
s.159-167.
DOI: 10.1007/978-981-13-2375-1_21
-
-
Lemu, Hirpa G.
(2019)
On Opportunities and Limitations of Additive Manufacturing Technology for Industry 4.0 Era.
I: Advanced Manufacturing and Automation VIII Proceedings IWAMA 2018.
Springer.
ISBN 978-981-13-2375-1.
s.106-113.
DOI: 10.1007/978-981-13-2375-1_15
-
-
Woldemariam, Endashaw Tesfaye;
Coatanéa, Eric;
Wang, G. Gary;
Lemu, Hirpa G.;
Wu, Di
(2018)
Customized dimensional analysis conceptual modelling framework for design optimization—a case study on the cross-flow micro turbine model.
Engineering optimization (Print).
ISSN 0305-215X.
DOI: 10.1080/0305215X.2018.1519556
-
-
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.
-
-
Terefe, Tesfaye Olana;
Lemu, Hirpa G.
(2018)
Solution Approaches to Differential Equations of Mechanical System Dynamics: A Case Study of Car Suspension System.
Advances in Science and Technology Research Journal.
ISSN 2299-8624.
Volum 12.
Hefte 2.
s.266-273.
DOI: 10.12913/22998624/85662
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2018)
Frictional Resistances of AMS5599 Nickel-based Alloy at High Pressure Conditions.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 381.
Hefte 1.
DOI: 10.1088/1757-899X/381/1/012159
-
-
Nikolova, Ina D.;
Lemu, Hirpa G.;
Dahterova, Dimitrinka S.;
Ivanov, Vanio D.
(2018)
A Comparative Study of Outranking Methods for Multi-Criteria Optimization of Electromechanical Modules .
Tehnicki Vjesnik.
ISSN 1330-3651.
Volum 25.
Hefte 5.
s.1330-1338.
DOI: 10.17559/TV-20170111011555
-
-
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2018)
Additive Manufacturing for the Manufacture of Gas Turbine Engine Components: Literature Review and Future Perspectives.
I: ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition
Volume 6: Ceramics; Controls, Diagnostics, and Instrumentation; Education; Manufacturing Materials and Metallurgy Oslo, Norway, June 11–15, 2018
.
The American Society of Mechanical Engineers (ASME).
ISBN 978-0-7918-5112-8.
DOI: 10.1115/GT2018-76686
-
-
Kajela, Delesa;
Lemu, Hirpa G.
(2018)
Design and Modelling of a Light Duty Trencher for Local Conditions.
Advances in Science and Technology Research Journal.
ISSN 2299-8624.
Volum 12.
Hefte 1.
s.303-311.
DOI: 10.12913/22998624/85661
-
-
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2018)
Investigating Effects of Fused-Deposition Modeling
(FDM) Processing Parameters on Flexural Properties
of ULTEM 9085 using Designed Experiment.
Materials.
ISSN 1996-1944.
Volum 11.
Hefte 4.
DOI: 10.3390/ma11040500
-
-
Byberg, Kate Iren;
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2018)
Mechanical properties of ULTEM 9085 material processed by fused deposition modeling.
Polymer testing.
ISSN 0142-9418.
Volum 72.
s.335-347.
DOI: 10.1016/j.polymertesting.2018.10.040
-
-
Woldemariam, Endashaw Tesfaye;
Lemu, Hirpa G.;
Wang, Gary G.
(2018)
CFD-Driven Valve Shape Optimization for Performance Improvement of a Micro Cross-Flow Turbine.
Energies.
ISSN 1996-1073.
Volum 11.
Hefte 1.
s.1-18.
DOI: 10.3390/en11010248
-
-
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2018)
Effect of Process Parameters on Compressive Properties of ULTEM 9085 Produced by FDM Process.
I: ASME 2018 International Mechanical Engineering Congress and Exposition November 9–15, 2018, Pittsburgh, Pennsylvania, USA
Volume 2: Advanced manufacturing.
The American Society of Mechanical Engineers (ASME).
ISBN 978-0-7918-5201-9.
DOI: 10.1115/IMECE2018-87523
-
-
Akessa, Adugna Deressa;
Lemu, Hirpa G.;
Gebisa, Aboma Wagari
(2017)
Mechanical Property Characterization of Additive Manufactured ABS Material Using Design of Experiment Approach.
I: ASME 2017 International Mechanical Engineering Congress and Exposition.
The American Society of Mechanical Engineers (ASME).
ISBN 978-0-7918-5849-3.
DOI: 10.1115/IMECE2017-70144
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2017)
Prediction of springback in V-die air bending process by using finite element method.
MATEC Web of Conferences.
ISSN 2261-236X.
Volum 121.
DOI: 10.1051/matecconf/201712103023
-
-
Lemu, Hirpa G.;
Trzepieciński, Tomasz;
Kubit, Andrzej;
Fejkiel, Romuald
(2017)
FRICTION MODELING OF Al-Mg ALLOY SHEETS BASED ON MULTIPLE REGRESSION ANALYSIS AND NEURAL NETWORKS.
Advances in Science and Technology Research Journal.
ISSN 2299-8624.
Volum 11.
Hefte 1.
s.48-57.
DOI: 10.12913/22998624/68460
-
-
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2017)
A Case Study on Topology Optimized Design for Additive Manufacturing.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 276.
Hefte 1.
DOI: 10.1088/1757-899X/276/1/012026
-
-
Berkani, Imad;
Karlsen, Øyvind;
Lemu, Hirpa G.
(2017)
Experimental and numerical study of Bondura® 6.6 PIN joints.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 276.
Hefte 1.
DOI: 10.1088/1757-899X/276/1/012028
-
-
Rege, Kristen;
Lemu, Hirpa G.
(2017)
A Review of Fatigue Crack Propagation Modelling Techniques Using FEM and XFEM.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 276.
Hefte 1.
s.1-17.
DOI: 10.1088/1757-899X/276/1/012027
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2017)
Effect of Activation Function and Post Synaptic Potential on
Response of Artificial Neural Network to Predict Frictional
Resistance of Aluminium Alloy Sheets.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 269.
Hefte 1.
s.1-6.
DOI: 10.1088/1757-899X/269/1/012041
-
-
Trzepiecinski, Thomasz;
Fejkiel, Romuald;
Lemu, Hirpa G.
(2017)
Experimental Investigation of Frictional Resistances in the Drawbead Region of the Sheet Metal Forming Processes.
IOP Conference Series: Materials Science and Engineering.
ISSN 1757-8981.
Volum 276.
Hefte 012042.
DOI: 10.1088/1757-899X/269/1/012042
-
-
Trzepieciński, Tomasz;
Lemu, Hirpa G.;
Fejkiel, Romuald
(2017)
Numerical simulation of effect of friction directionality on forming of anisotropic sheets.
International Journal of Simulation Modelling.
ISSN 1726-4529.
Volum 16.
Hefte 4.
s.590-602.
DOI: 10.2507/IJSIMM16(4)3.392
-
-
Gebisa, Aboma Wagari;
Lemu, Hirpa G.
(2017)
Design for manufacturing to design for Additive Manufacturing: Analysis of implications for design optimality and product sustainability.
Procedia Manufacturing.
ISSN 2351-9789.
Volum 13.
s.724-731.
DOI: 10.1016/j.promfg.2017.09.120
-
-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2017)
Effect of Computational Parameters on Springback Prediction by Numerical Simulation.
Metals.
ISSN 2075-4701.
Volum 7.
Hefte 9.
DOI: 10.3390/met7090380
-
-
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.
-
-
Lemu, Hirpa G.
(2017)
On Competition-driven Teaching of Multidisciplinary Engineering Education: Implementation cases at University of Stavanger.
Nordic Journal of STEM Education.
ISSN 2535-4574.
Volum 1.
Hefte 1.
s.278-286.
DOI: 10.5324/njsteme.v1i1.2340
-
-
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.
-
-
Trzepieciński, Tomasz;
TRYTEK, Andrzej;
Lemu, Hirpa G.
(2016)
Study of Frictional Properties of AMS Nickel-Chromium Alloys.
Key Engineering Materials.
ISSN 1013-9826.
Volum 674.
s.244-249.
DOI: 10.4028/www.scientific.net/KEM.674.244
-
-
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.
-
-
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.
-
-
Lemu, Hirpa G.
(2016)
Proposal for design-centered cloud computing in engineering
design and manufacturing.
I: Advanced Manufacturing and Automation V.
WIT Press.
ISBN 978-1-78466-169-4.
s.241-249.
DOI: 10.2495/IWAMA150281
-
-
Woldemariam, Endashaw Tesfaye;
Lemu, Hirpa G.
(2016)
Nonlinear isogeometric analysis in simulation-based design optimization: State-of-the-art analysis.
I: Advanced Manufacturing and Automation V.
WIT Press.
ISBN 978-1-78466-169-4.
s.89-97.
DOI: 10.2495/IWAMA150111
-
-
Lemu, Hirpa G.
(2016)
Beyond Rapid Prototyping: Study of prospects and impacts of 3D printing in functional part fabrication
.
I: Advanced Manufacturing and Automation VI.
Atlantis Press.
ISBN 978-94-6252-243-5.
DOI: 10.2991/iwama-16.2016.25
-
-
Aeran, Ashish;
Lemu, Hirpa G.
(2016)
Time Integration Schemes in Dynamic Problems: Effect of Damping on Numerical Stability and Accuracy.
I: Advanced Manufacturing and Automation VI.
Atlantis Press.
ISBN 978-94-6252-243-5.
DOI: 10.2991/iwama-16.2016.40
-
-
Woldemariam, Endashaw Tesfaye;
Lemu, Hirpa G.
(2016)
Comparative analysis of computational methods in
Fluid-Structure Interaction: Temporal descretization and coupling techniques.
I: Advanced Manufacturing and Automation VI.
Atlantis Press.
ISBN 978-94-6252-243-5.
DOI: 10.2991/iwama-16.2016.26
-
-
Nikolova, Ina D.;
Dahterova, Dimitrinka S.;
Ivanov, Vanio D.;
Lemu, Hirpa G.
(2016)
Multi-criteria Optimization of Electromechanical Modules: Part 1- PROMETHEE method.
I: Advanced Manufacturing and Automation VI.
Atlantis Press.
ISBN 978-94-6252-243-5.
DOI: 10.2991/iwama-16.2016.23
-
-
Nikolova, Ina D.;
Dahterova, Dimitrinka S.;
Ivanov, Dimitrinka S.;
Lemu, Hirpa G.
(2016)
Multi-criteria Optimization of Electromechanical Modules: Part 2 - RAZOR method.
I: Advanced Manufacturing and Automation VI.
Atlantis Press.
ISBN 978-94-6252-243-5.
DOI: 10.2991/iwama-16.2016.28
-
-
Banos, Rodrigo L.;
Lemu, Hirpa G.
(2016)
Design and performance analysis of anchor system for a single-body wave energy converter.
I: ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering - Volume 6: Ocean Space Utilization; Ocean Renewable Energy.
The American Society of Mechanical Engineers (ASME).
ISBN 978-0-7918-4997-2.
DOI: 10.1115/omae2016-54043
-
-
Taboada, Jose V.;
Lemu, Hirpa G.
(2016)
Analysis of Wave Energy Sources in the North Atlantic Waters in View of Design Challenges.
I: ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering - Volume 6: Ocean Space Utilization; Ocean Renewable Energy.
The American Society of Mechanical Engineers (ASME).
ISBN 978-0-7918-4997-2.
DOI: 10.1115/omae2016-54042
-
-
Øygarden, Benjamin;
Bruset, Mathias;
Lemu, Hirpa G.
(2016)
Multibody Dynamics Simulation of ROV Manipulator Designed for Student Competition.
I: Advanced Manufacturing and Automation VI.
Atlantis Press.
ISBN 978-94-6252-243-5.
DOI: 10.2991/iwama-16.2016.42
-
-
Trzepieciński, Tomasz;
Bazan, Anna;
Lemu, Hirpa G.
(2015)
Study of Frictional Characteristics of Steel Sheets Used in Automobile Industry.
International Journal of Automotive Technology.
ISSN 1229-9138.
Volum 16.
Hefte 5.
s.849-863.
DOI: 10.1007/s12239-015-0087-1
-
-
Safari, Amir;
Adel, Younis;
Wang, Gary G.;
Lemu, Hirpa G.;
Zuomin, Dong
(2015)
Development of a metamodel assisted sampling approach to aerodynamic shape optimization problems.
Journal of Mechanical Science and Technology.
ISSN 1738-494X.
Volum 29.
Hefte 5.
s.2013-2024.
DOI: 10.1007/s12206-015-0422-5
-
-
Trzepieciński, Tomasz;
BAZAN, anna;
Lemu, Hirpa G.
(2015)
Finite Element Modeling of Frictional and Material Anisotropy during Forming of Steel Cylindrical Cups.
Applied Mechanics and Materials.
ISSN 1660-9336.
Volum 789-790.
s.3-6.
DOI: 10.4028/www.scientific.net/AMM.789-790.3
-
-
Trzepieciński, Tomasz;
Lemu, Hirpa G.
(2015)
Proposal of Experimental-Numerical Method for Friction Description in Sheet Metal Forming.
Strojniski vestnik.
ISSN 0039-2480.
Volum 61.
Hefte 6.
s.383-391.
DOI: 10.5545/sv-jme.2015.2404
-
-
Lemu, Hirpa G.
(2015)
Advances in numerical computation based mechanical system design and simulation.
Advances in Manufacturing.
ISSN 2095-3127.
Volum 3.
Hefte 2.
s.130-138.
DOI: 10.1007/s40436-015-0110-9
-
-
Lemu, Hirpa G.;
Radostina, Petrova;
Mihailov, Assen
(2015)
Study of a Vertical Axis Wind Turbine Using Fluid Particle Trajectory.
Applied Mechanics and Materials.
ISSN 1660-9336.
Volum 799-800.
s.618-624.
DOI: 10.4028/www.scientific.net/AMM.799-800.618
-
-
Trzepieciński, Tomasz;
Lemu, Hirpa G.
(2014)
Frictional conditions of AA5251 aluminium alloy sheets using drawbead simulator tests and numerical methods.
Strojniski vestnik.
ISSN 0039-2480.
Volum 60.
Hefte 1.
s.51-60.
DOI: 10.5545/sv-jme.2013.1310
-
-
Lemu, Hirpa G.
(2014)
Current status and challenges of using geometric tolerance information in intelligent manufacturing systems.
Advances in Manufacturing.
ISSN 2095-3127.
Volum 2.
Hefte 1.
s.13-21.
DOI: 10.1007/s40436-014-0056-3
-
-
Larion, Ioan;
Lemu, Hirpa G.
(2014)
Study of Coanda Effect Applied to Vertical Wind Turbine Blades.
I: ASME 2014 International Mechanical Engineering Congress and Exposition
Volume 6B: Energy
Montreal, Quebec, Canada, November 14–20, 2014.
The American Society of Mechanical Engineers (ASME).
ISBN 978-13-7918-4652.
DOI: 10.1115/IMECE2014-39864
-
-
Petrova, Radostina;
Lemu, Hirpa G.
(2014)
Stress and Displacement Analysis of a HAWT Under Time-Variable Wind.
I: ASME 2014 International Mechanical Engineering Congress and Exposition
Volume 6B: Energy
Montreal, Quebec, Canada, November 14–20, 2014.
The American Society of Mechanical Engineers (ASME).
ISBN 978-13-7918-4652.
DOI: 10.1115/IMECE2014-37018
-
-
Hajikolaei, Kambiz Haji;
Safari, Amir;
Wang, Gaofeng;
Lemu, Hirpa G.
(2014)
Surrogate-assisted Self-accelerated Particle Swarm Optimization.
I: 10th AIAA Multidisciplinary Design Optimization Conference.
American Institute of Aeronautics and Astronautics (AIAA).
ISBN 978-1-62410-310-0.
DOI: 10.2514/6.2014-1486
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-
Lemu, Hirpa G.
(2014)
Virtual engineering in design and manufacturing.
Advances in Manufacturing.
ISSN 2095-3127.
Volum 2.
Hefte 4.
s.289-294.
DOI: 10.1007/s40436-014-0085-y
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-
Lemu, Hirpa G.;
Trzepieciński, Tomasz
(2014)
Multiple Regression and Neural Network Based Characterization of Friction in Sheet Metal Forming.
Advanced Materials Research.
ISSN 1022-6680.
Volum 1051.
s.204-210.
DOI: 10.4028/www.scientific.net/AMR.1051.204
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-
Lemu, Hirpa G.
(2014)
Virtual Engineering Based Design Integration, Visualization and Validation.
Journal of Applied Mechanical Engineering.
ISSN 2168-9873.
Volum 3.
Hefte 2.
DOI: 10.4172/2168-9873.1000e129
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-
Lemu, Hirpa G.
(2014)
Simulation-based engineering approaches for renewable energy conversion systems.
Advanced Materials Research.
ISSN 1022-6680.
Volum 1039.
s.91-98.
DOI: 10.4028/www.scientific.net/AMR.1039.91
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-
Huluka, Alemayehu W.;
Lemu, Hirpa G.
(2014)
Study and Development of Vehicle Collision Detection System.
I: ASME 2014 International Mechanical Engineering Congress and Exposition
Volume 12: Transportation Systems
Montreal, Quebec, Canada, November 14–20, 2014.
The American Society of Mechanical Engineers (ASME).
ISBN 978-13-7918-4652.
DOI: 10.1115/IMECE2014-37227
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-
Safari, Amir;
Lemu, Hirpa G.;
Jafari, Soheil;
Assadi, Mohsen
(2013)
A Comparative Analysis of Nature-Inspired Optimization Approaches to 2D Geometric Modelling for Turbomachinery Applications.
Mathematical Problems in Engineering.
ISSN 1024-123X.
s.1-15.
DOI: 10.1155/2013/716237
-
-
Safari, Amir;
Lemu, Hirpa G.;
Assadi, Mohsen
(2013)
A Novel Combination of Adaptive Tools for Turbomachinery Airfoil Shape Optimization Using a Real-coded Genetic Algorithm.
I: ASME Turbo Expo: Turbine Technical Conference and Exposition 2013, USA.
The American Society of Mechanical Engineers (ASME).
ISBN 978-0-7918-5523-2.
DOI: 10.1115/GT2013-94093
-
-
Lemu, Hirpa G.;
Trzepieciński, Tomasz
(2013)
Numerical and Experimental Study of Frictional Behavior in Bending Under Tension Test.
Strojniski vestnik.
ISSN 0039-2480.
Volum 59.
Hefte 1.
s.41-49.
DOI: 10.5545/sv-jme.2012.383
-
-
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.
-
-
Omran, Mojtaba P.;
Amani, Amin;
Lemu, Hirpa G.
(2013)
Analytical Approximation of Nonlinear Vibration of String with Large Amplitudes.
Journal of Mechanical Science and Technology.
ISSN 1738-494X.
Volum 27.
Hefte 4.
s.981-986.
DOI: 10.1007/s12206-013-0301-x
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-
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.
-
-
Lemu, Hirpa G.;
Trzepieciński, Tomasz
(2012)
Study of Material Modeling Strategies for Deformability Analysis of Rectangular Cups.
Advanced Materials Research.
ISSN 1022-6680.
Volum 498.
s.243-248.
DOI: 10.4028/www.scientific.net/AMR.498.243
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-
Trzepiecinski, Thomasz;
Lemu, Hirpa G.
(2012)
Study of Material Anisotropy in Metal Forming Using Finite Element Methods.
I: Anisotropy Research: New Developments.
Nova Science Publishers.
ISBN 978-1-62081-977-7.
s.1-24.
DOI: 10.1007/s12289-010-0994-7
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-
Lemu, Hirpa G.;
Kurtovic, Safet
(2012)
3D Printing for rapid manufacturing : study of dimensional and geometrical accuracy.
I: Advances in Production Management Systems. Value Networks: Innovation, Technologies, and Management.
Springer Science+Business Media B.V..
ISBN 978-3-642-33979-0.
s.470-479.
DOI: 10.1007/978-3-642-33980-6_51
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-
Lemu, Hirpa G.;
Trzepiecinski, Thomasz
(2012)
FEM Based Deformability Analysis of Metal Forming: Influence of Material Models and Analysis Approaches.
AIP Conference Proceedings.
ISSN 0094-243X.
Volum 1431.
s.702-710.
DOI: 10.1063/1.4707626
-
-
Lemu, Hirpa G.;
Frick, Jan;
Uhl, Tadeusz;
Lisowski, Wojciech;
Piwowarczyk, Piotr
(2012)
Study on need assessment of mechatronics education in Norway and Poland.
I: Advances in Production Management Systems. Value Networks: Innovation, Technologies, and Management.
Springer Science+Business Media B.V..
ISBN 978-3-642-33979-0.
s.557-566.
DOI: 10.1007/978-3-642-33980-6_60
-
-
Trzepieciński, 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)
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.
-
-
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;
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.
-
-
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.
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-
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.
-
-
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.
-
-
Gelgele, Hirpa Lemu;
Trzepiecinski, Thomasz
(2011)
Investigation of Anisotropy Problems in Sheet Metal Forming using Finite Element Method.
International Journal of Material Forming.
ISSN 1960-6206.
Volum 4.
Hefte 4.
s.357-369.
DOI: 10.1007/s12289-010-0994-7
-
-
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;
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.
-