Mechanical and Microstructural Engineering Laboratory

About

Research Infrastructure

•  High Temperature Furnace (Argon Controlled)
•  Cube Oven
•  Rolling
•  Sanding/Polishing Device
•  Mounting Device
•  Diamond Precision Cutter
•  Optical Microscope and Image Analysis Program
•  Tensile-Compression Tester
•  Microhardness tester
•  Functional Fatigue Tester
•  Differential Scanning Calorimetry
•  Hydraulic Hand Press
•  Fume Hood

Researchers

•  ASSOC. DR. BENAT KOÇKAR (Laboratory Supervisor)
• 6 Graduate Students
•  3 PhD Students
•  2 Undergraduate Students

Ongoing Projects

• Metallic Glass/Nanocrystal Composites and NiTiHf Shape Memory Alloys for High Temperature Applications (ALLOYS)
Supporting Type: Foreign Support (United States)
Supporting Organization: United States Air Force Office of Scientific Research (AFOSR), U.S.A.
Director: ASSOC. DR. BENAT KOÇKAR
• 5190043 – “Development of Resistance Welding Application Strategies for New Generation Vehicle Bumpers Manufactured from Ultra High Strength Thin Sheets”
Supporting Type: External
Support Supporting Organization: Tübitak
Executive: DR. FACULTY MEMBER M. OKAN GORTAN
Researcher: ASSOC. DR.BENAT KOÇKAR
• 118F491- “Synthesis and Characterization of Graphene Encapsulated Metal Particles for Electromagnetic Shielding and Heat Distribution Applications”
Supporting Type: External Support
Supporting Organization: Tubitak
Director: ASSOC. DR. GÖKNUR CAMBAZ BUKE
Researcher: ASSOC. DR. BENAT KOÇKAR

Completed Projects

• DKTM/2015/10-“Action Development Using Titanium (Ti) Based Shape Memory Alloy Technology”
Supporting Type: External Support
Supporting Organization: TAI-TUSAŞ-ROTARY KANAT TECHNOLOGY CENTER
Director: ASSOC. DR. BENAT KOÇKAR
• FHD-2018-17331-“The Effect of Heating and Cooling Rate on Functional Fatigue Properties of NiTiHf High Temperature Shape Memory Alloy”
Supporting Organization: BAP-HACETTEPE UNIVERSITY
Director: ASSOC. DR. BENAT KOÇKAR

Publications

• H Onat Tugrul, Hasan H Saygili, Mustafa S Velipasaoglu and Benat Kockar, “Comparison of the transformation behavior of cold rolling with aging and hot extrusion with aging processed Ni50.3Ti29.7Hf20 high temperature shape memory alloy”, Smart Materials and Structures, 28, (2019), 105029. DOI: 10.1088/1361-665X/ab39f3.
• Ogulcan Akgul, Halil O. Tugrul, Benat Kockar, “Effect of the cooling rate on the thermal and thermomechanical behavior of NiTiHf high-temperature shape memory alloy”, Journal of Materials Research, 35, (2020),1572-1581. DOI: 10.1557/jmr.2020.139.
• H Onat Tugrul, Hasan H Saygili, Benat Kockar, ”Influence of limiting the actuation strain on the functional fatigue behavior of Ni50.3Ti29.7Hf20 high temperature shape memory alloy”, Journal of Intelligent Material Systems and Structures, (2020). DOI: 10.1177/1045389X20953610.
• Hasan H. Saygili, H. Onat Tugrul, Benat Kockar, “Effect of Aging Heat Treatment on the High Cycle Fatigue Life of Ni50.3Ti29.7Hf20 High-Temperature Shape Memory Alloy”, Shape Memory and Superelasticity, 5, (2019) , 32-41.
• E Cetin, I. Daldal, A. Eren, S Ö A Dizakar, S. Ömeroğlu, B Uzuner, HH Çelik, HH Saygılı, Benat Koçkar, A Şenköylü, “Epidermal growth factor enhances spinal fusion: Posterolateral lumbar fusion model on rats”, Acta Orthopaedica et Traumatologica Turcica, 53, (2019), 134-139.
• N Babacan, J Ma, OS Turkbas, I Karaman, Benat Kockar, “The effects of cold rolling and the subsequent heat treatments on the shape memory and the superelasticity characteristics of Cu73Al16Mn11 shape memory alloy”, Smart Materials and Structures, 27, ( 2018), 015028.
• N Babacan, K C Atli, O S Turkbas, I Karaman, Benat Kockar, “The effect of dynamic aging on the cyclic stability of Cu73Al16Mn11 shape memory alloy”, Materials Science and Engineering A, 701, (2017), 352-358.
• H Onat Tugrul, S Cakmak, Benat Kockar, “Comparison of the Work Output Values ​​of Gradually Changing Porosity Samples and the Samples with Single Percent Porosity Level”, Proceedings of the TMS Middle East — Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015), (2015), 201-210. https://doi.org/10.1007/978-3-319-48766-3_20.

About

Research Infrastructure

•  High Temperature Furnace (Argon Controlled)
•  Cube Oven
•  Rolling
•  Sanding/Polishing Device
•  Mounting Device
•  Diamond Precision Cutter
•  Optical Microscope and Image Analysis Program
•  Tensile-Compression Tester
•  Microhardness tester
•  Functional Fatigue Tester
•  Differential Scanning Calorimetry
•  Hydraulic Hand Press
•  Fume Hood

Researchers

•  ASSOC. DR. BENAT KOÇKAR (Laboratory Supervisor)
• 6 Graduate Students
•  3 PhD Students
•  2 Undergraduate Students

Ongoing Projects

• Metallic Glass/Nanocrystal Composites and NiTiHf Shape Memory Alloys for High Temperature Applications (ALLOYS)
Supporting Type: Foreign Support (United States)
Supporting Organization: United States Air Force Office of Scientific Research (AFOSR), U.S.A.
Director: ASSOC. DR. BENAT KOÇKAR
• 5190043 – “Development of Resistance Welding Application Strategies for New Generation Vehicle Bumpers Manufactured from Ultra High Strength Thin Sheets”
Supporting Type: External
Support Supporting Organization: Tübitak
Executive: DR. FACULTY MEMBER M. OKAN GORTAN
Researcher: ASSOC. DR.BENAT KOÇKAR
• 118F491- “Synthesis and Characterization of Graphene Encapsulated Metal Particles for Electromagnetic Shielding and Heat Distribution Applications”
Supporting Type: External Support
Supporting Organization: Tubitak
Director: ASSOC. DR. GÖKNUR CAMBAZ BUKE
Researcher: ASSOC. DR. BENAT KOÇKAR

Completed Projects

• DKTM/2015/10-“Action Development Using Titanium (Ti) Based Shape Memory Alloy Technology”
Supporting Type: External Support
Supporting Organization: TAI-TUSAŞ-ROTARY KANAT TECHNOLOGY CENTER
Director: ASSOC. DR. BENAT KOÇKAR
• FHD-2018-17331-“The Effect of Heating and Cooling Rate on Functional Fatigue Properties of NiTiHf High Temperature Shape Memory Alloy”
Supporting Organization: BAP-HACETTEPE UNIVERSITY
Director: ASSOC. DR. BENAT KOÇKAR

Publications

• H Onat Tugrul, Hasan H Saygili, Mustafa S Velipasaoglu and Benat Kockar, “Comparison of the transformation behavior of cold rolling with aging and hot extrusion with aging processed Ni50.3Ti29.7Hf20 high temperature shape memory alloy”, Smart Materials and Structures, 28, (2019), 105029. DOI: 10.1088/1361-665X/ab39f3.
• Ogulcan Akgul, Halil O. Tugrul, Benat Kockar, “Effect of the cooling rate on the thermal and thermomechanical behavior of NiTiHf high-temperature shape memory alloy”, Journal of Materials Research, 35, (2020),1572-1581. DOI: 10.1557/jmr.2020.139.
• H Onat Tugrul, Hasan H Saygili, Benat Kockar, ”Influence of limiting the actuation strain on the functional fatigue behavior of Ni50.3Ti29.7Hf20 high temperature shape memory alloy”, Journal of Intelligent Material Systems and Structures, (2020). DOI: 10.1177/1045389X20953610.
• Hasan H. Saygili, H. Onat Tugrul, Benat Kockar, “Effect of Aging Heat Treatment on the High Cycle Fatigue Life of Ni50.3Ti29.7Hf20 High-Temperature Shape Memory Alloy”, Shape Memory and Superelasticity, 5, (2019) , 32-41.
• E Cetin, I. Daldal, A. Eren, S Ö A Dizakar, S. Ömeroğlu, B Uzuner, HH Çelik, HH Saygılı, Benat Koçkar, A Şenköylü, “Epidermal growth factor enhances spinal fusion: Posterolateral lumbar fusion model on rats”, Acta Orthopaedica et Traumatologica Turcica, 53, (2019), 134-139.
• N Babacan, J Ma, OS Turkbas, I Karaman, Benat Kockar, “The effects of cold rolling and the subsequent heat treatments on the shape memory and the superelasticity characteristics of Cu73Al16Mn11 shape memory alloy”, Smart Materials and Structures, 27, ( 2018), 015028.
• N Babacan, K C Atli, O S Turkbas, I Karaman, Benat Kockar, “The effect of dynamic aging on the cyclic stability of Cu73Al16Mn11 shape memory alloy”, Materials Science and Engineering A, 701, (2017), 352-358.
• H Onat Tugrul, S Cakmak, Benat Kockar, “Comparison of the Work Output Values ​​of Gradually Changing Porosity Samples and the Samples with Single Percent Porosity Level”, Proceedings of the TMS Middle East — Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015), (2015), 201-210. https://doi.org/10.1007/978-3-319-48766-3_20.