2023
Using micro-milled surface topography and force measurements to identify tool runout and mechanistic model coefficients
Masrani, A., Karpat, Y.
International Journal of Advanced Manufacturing Technology, 2023, 125(11-12)
2022
Improving the dimensional accuracy of micro parts 3D printed with projection-based continuous vat photopolymerization using a model-based grayscale optimization method
Guven, E., Karpat, Y., Cakmakci, M.
Additive Manufacturing, 2022, 57, 102954
Surface integrity of monocrystalline silicon nanostructured with engineered multi-tip diamond tools
Karpat, Y.
International Journal of Advanced Manufacturing Technology, 2022, 120(5-6), pp. 3983–3993
A model-based investigation of tool-chip friction during precision micro cutting of commercially pure titanium alloy
Aksin, A., Karpat, Y.
International Journal of Mechatronics and Manufacturing Systems, 2022, 15(1), pp. 57–69
Investigating flank face friction during precision micro cutting of commercially pure titanium via plunging tests with diamond grooving tools
Karpat, Y.
Journal of Materials Processing Technology, 2022, 299, 117376
2021
Yigit Karpat, Micro scale groove machining on monocrystalline silicon using engineered diamond tools, International Conference on Machining, İstanbul, December 2021
Abdulrzak Masrani, Yiğit Karpat, A hybrid cutting force model for micro-milling processes, International Conference on Machining, İstanbul, December 2021
2020
A thermo-mechanical model of drill margin-borehole surface interface contact conditions in dry drilling of thick CFRP laminates
Karpat, Y., Karagüzel, U., Bahtiyar, O.
International Journal of Machine Tools and Manufacture, 2020, 154, 103565
2019
Y. Karpat, “Influence of diamond tool chamfer angle on surface integrity in ultra-precision turning of singe crystal silicon”, Int. Journal of Advanced Manuf. Tech., April 2019
S Oliaei, Y. Karpat, ” Modeling and Analysis of Tool Deflections in Tailored Micro End Mills”, International Journal of Mechatronics and Manufacturing Systems (IJMMS), Vol 12, 20-37, 2019.
2018
S.N.B. Oliaei, Y. Karpat, J. Paulo Davim, A. Perveen, “Micro Tool Design and Fabrication: A Review”, Journal of Manufacturing Processes, December 2018
M. Ahmadi, Y. Karpat, Ö. Acar, E. Kalay, “Microstructure effects on process outputs in micro scale milling of heat treated Ti6Al4V titanium alloys”, Journal of Materials Processing Technology, 2018, 252: 333-347.
S Oliaei, Y. Karpat, “Polycrystalline diamond end mill cutting edge design to improve ductile-mode machining of silicon”, Precision Engineering, 2018, 51: 403-414.
Y. Karpat, S. Oliaei, M. Kanlı, “Mechanistic Modeling of Micro Milling Including Tool Run-out“, GUMMFD 2018, in press.
2017
E. Gozu, Y. Karpat, “Uncertainty analysis of force coefficients during micromilling of titanium alloy”, International Journal of Advanced Manufacturing Technology, 2017, 93: 839-855.
S. Oliaei, Y. Karpat, “Built-up edge effects on process outputs of titanium alloy micro milling”, Precision Engineering, 2017, 49: 305–315.
S. Oliaei, Y. Karpat, “Investigating the influence of friction conditions on finite element simulation of micro scale machining with the presence of built-up edge”, International Journal of Advanced Manufacturing, 2017, 90: 819–829.
2016
S. Oliaei, Y. Karpat, “Investigating the influence of built-up edge on forces and surface roughness in micro scale orthogonal machining of titanium alloy Ti6Al4V”, Journal of Materials Processing Technology Vol 235, 28-40, 2016.
S. Oliaei, Y. Karpat, “Influence of Tool Wear on Machining Forces and Tool Deflections during Micro Milling”, International Journal of Advanced Manufacturing, Vol 84, 1963-1980, 2016
Z. Ali, E. B. Türeyen, Y. Karpat, M. Çakmakcı, ” Fabrication of Polymer Micro Needles for Transdermal Drug Delivery System using DLPbased Projection Stereo-lithography” Procedia CIRP, Vol 42, 87-90, 2016.
S. Oliaei, Y. Karpat, ” Fabrication of PCD Mechanical Planarization Tools by using μ-Wire Electrical Discharge Machining” Procedia CIRP, Vol 42, 311-316, 2016.
S. Oliaei, Y. Karpat, ” Influence of WEDM Strategies on Surface Roughness of Tungsten Carbide” The 17th International Conference on Machine Design and Production July 12 – July 15 2016, Bursa, Turkey.
Y. Karpat, O. Bahtiyar, “Cutting Power based Investigation of Process Parameters while Drilling Carbon Fiber Reinforced Polymers”, Procedia CIRP, Vol 46, 59-62, 2016.
E.B. Türeyen, Y. Karpat and M. Çakmakcı, “Development of an Iterative Learning Controller for Polymer based Micro-Stereolithography Prototyping Systems”, American Control Conference, 2016.
2015
Y. Karpat, O. Bahtiyar, “Tool Geometry Based Prediction of Critical Thrust Force while Drilling Carbon Fiber Reinforced Polymers”, Advances in Manufacturing, 3, 300-308, 2015. (DOI 10.1007/s40436-015-0129-y)
S. Zeinali, B. Çetin, S. Oliaei, Y. Karpat, “Fabrication of continuous flow microfluidics device with 3D electrode structures for high throughput DEP applications using mechanical machining”, Electrophoresis 03/2015; DOI:10.1002/elps.201400486
Y. Karpat, O. Bahtiyar, “Helisel Çok Kristalli Elmas Matkaplar ile Karbon Fiber Takviyeli Polimer Levhaların Delinme İşleminin İncelenmesi”, 6. Ulusal Talaşlı İmalat Konferansı, Kasım 2015
E. B. Türeyen, Z. Ali, Y. Karpat, M. Çakmakcı, “Fabrication of High Aspect Ratio Polymer Structures Using A Digital Micro Mirror Device Based Stereo Lithography Technique”, 8th International Conference and Exhibition on Design and Production of MACHINES and DIES/MOLDS, 2015, Aydin, Turkey.
S. N. B. Oliaei, Y. Karpat, An Investigation of Ductile Regime Machining of Fused Silica Glass Using PCD Micro Tools”, 8th International Conference and Exhibition on Design and Production of MACHINES and DIES/MOLDS, 2015, Aydin, Turkey
Y. Karpat, O. Bahtiyar, “Comparative analysis of PCD drill designs during drilling of CFRP laminates”, abstract accepted for 15th CIRP Conference on Modelling of Machining Operations, Karlsruhe, Germany, 2015.
2014
Y. Karpat, B. Değer, O. Bahtiyar, B. Kaftanoğlu, “A Mechanistic Approach to Investigate Drilling of UD-CFRP Laminates with PCD Drills”, CIRP Annals – Manufacturing Technology, Volume 63, 2014.
S.N.B. Oliaei, C. Özdemir, Y. Karpat, “Fabrication of Micro Ball End Mills Using Micro Electro Discharge Machining”, Special Issue on: “7th International Conference on Design and Production of Dies and Molds “Recent Advances in Manufacturing Technology,” Int. J. of Mechatronics and Manufacturing Systems, in press.
Y.Karpat, B. Değer, O. Bahtiyar, “Experimental Evaluation of Polycrystalline Diamond Tool Geometries while Drilling Carbon Fiber Reinforced Plastics”, International Journal of Advanced Manufacturing Technology, Volume 71, Issue 5, 1295-1307, 2014.
S.N.B. Oliaei, Y.Karpat, “Experimental Investigations on Micro Milling of Stavax Stainless Steel”, CIRP High Performance Cutting Conference, 2014, Berkeley, USA
Y. Karpat, O. Bahtiyar, “Experimental Investigation of Double Point Angle Polycrystalline Diamond Drill Geometries”, 16th International Conference on Machine Design and Production, 2014, İzmir, Turkey
2013
Y.Karpat, N. Polat, “Mechanistic Force Modeling for Milling of Carbon Fiber Reinforced Polymers with Double Helix Tools”, CIRP Annals- Manufacturing Technology, Volume 62, 95-98, 2013.
O.M.Bircan, M.A. Güler, Y. Karpat, “An Analytical Approach to Design Accurate Profile of the Form-Turning Inserts”, 7th International Advanced Technologies Symposium (IATS’13), 30 October-1 November 2013, Istanbul, Turkey
S.N.B. Oliaei, C. Özdemir, Y.Karpat, “Fabrication of Micro Ball End Mills Using Micro Electro Discharge Machining”, 7th International Conference And Exhibition on Desing and Production of Machines and Dies/Molds, June 2013, Antalya, TURKEY.
2012
Y.Karpat, B. Değer, O. Bahtiyar, “Drilling Thick Fabric Woven CFRP Laminates with Double Point Angle Tools”, Journal of Materials Processing Technology, Volume 212, 2117-2127, May 2012.
Y.Karpat, B. Değer, O. Bahtiyar, “Mechanistic Force Modeling for Milling of Unidirectional Carbon Fiber Reinforced Polymer Laminates, International Journal of Machine Tools and Manufacture, Volume 56, 79-93, May 2012.
A. Ergür, S.N.B. Oliaei, Y.Karpat, “Design and Fabrication of Micro Cutting Tools Using Micro Electro Discharge Machining (µ-EDM)”, 15th International Conference on Machine Design and Production, 2012, Denizli, Turkey
S.N.B. Oliaei, Y. Karpat, “Multi Scale Milling Force Modeling through a Finite Element Simulation Based Metamodel”, 15th International Conference on Machine Design and Production, 2012, Denizli, Turkey
Y. Karpat, B. Değer, O. Bahtiyar, “Mechanistic Force Modeling for Milling of Unidirectional Carbon Fiber Reinforced Polymer (CFRP) Laminates”, 5th CIRP Conference on High Performance Cutting, Zurich, June 2012.
2011
Y. Karpat, “Temperature Dependent Flow Softening of Titanium Alloy Ti6Al4V: An Investigation Using Finite Element Simulation Of Machining”, Journal of Materials Processing Technology, Volume 211, Issue 4, pp 737-749, April 2011.
E. Azemi, E. Korkmaz, Y. Karpat, S. Filiz, “Micromachining of PMMA and PLGA Polymer Micro Needles for Medical Applications”, 6th International Conference on MicroManufacturing (ICOMM), March 7-10, 2011, Tokyo, Japan
2010
Y. Karpat, “A Modified Material Model for the Finite Element Simulation of Machining Titanium Alloy Ti6Al4V”, Machining Science and Technology, Vol. 14, Issue 3, pp 390-410, 2010.
A. Çelik, I. Lazoglu, Y. Karpat, F. Kara, A. Kara, “Cutting Performance of SiAlON Based Ceramic Materials”, The 3rd International Congress on Ceramics (ICC3), Osaka, Japan November 2010-Poster Pres.
N. Camuscu, Y. Karpat, A. Kılıç, B. Değer, F. Sonat, O. Bahtiyar, “Örgü Karbon Elyaf Takviyeli Polimer Malzemelerin Karbür Takımlarla Delinmesi”, 2.Ulusal Talaşlı İmalat Sempozyumu, Selcuk Üniversitesi, 1-2 Ekim 2010, Konya.
Y.Karpat, N. Camuscu, A. Kılıç, B. Değer, F. Sonat, O. Bahtiyar,” Drilling Carbon Fiber Reinforced Plastics with Diamond Coated Carbide Tools”, 36th Matador Conference, Manchester, UK, 2010.
E. Korkmaz, Y. Karpat, S. Filiz, “Recent Developments in Micro Machining Technologies”, 14th International Conference on Machine Design and Production, 2010, Cyprus, TRNC
Y.Karpat, “Temperature Dependent Flow Softening of Titanium Alloy Ti6AL4V: An Investigation Using Finite Element Modeling of Machining”, 14th International Conference on Machine Design and Production, 2010, Cyprus, TRNC
Y.Karpat, N. Camuscu, A. Kılıç, B. Değer, F. Sonat, O. Bahtiyar,” Drilling Carbon Fiber Reinforced Plastics with Diamond Coated Carbide and Polycryrstalline Diamond Cutting Tools”, 14th International Conference on Machine Design and Production, 2010, Cyprus, TRNC
2009
Y.Karpat, “Investigation of the Effect of Cutting Tool Edge Radius on Material Separation due to Ductile Fracture in Machining”, International Journal of Mechanical Sciences, Vol. 51, Issue 7, pp 541-546, 2009
Y. Karpat, “Titanyum Alaşımı Ti-6Al-4V Malzemesinin Dik Kesilmesi Esnasında İşlem Değişkenlerinin En Az Enerji Temelli Bir Model ile Hesaplanması”, 1.Ulusal Talaşlı İmalat Sempozyumu, Yıldız Üniversitesi, 2-3 Ekim 2009, İstanbul
İ. Keleş, Y. Karpat, “Optimization of multi-pass turning operations using swarm intelligence”, 29th National Operations Research and Industrial Engineering Conference, June 2009.
Y.Karpat, “Finite Element Simulation of Machining Titanium Ti-6Al-4V Alloy”, 5th International Conference And Exhibition on Desing and Production of Machines and Dies/Molds, June 2009, Kusadasi, Aydin, TURKEY.
Y.Karpat, “Finite Element Modeling of Machining Titanium Alloy Ti-6Al-4V Using A Modified Material Model”, 12th CIRP Conference on Modeling of Machining Operations, San Sebastian, Spain, May 2009.
2008
T. Özel, Y. Karpat, and A. Srivastava, “Hard Turning with Variable Micro-Geometry PcBN Tools,” CIRP Annals-Manufacturing Technology, Vol. 57 pp. 73-76, 2008.
Y. Karpat and T. Özel, “Process Simulations for 3-D Turning using Uniform and Variable Micro-Geometry PcBN Tools,” International Journal of Machining and Machinability of Materials, Vol. 3. No. 3, 2008.
Y. Karpat and T. Özel, “Analytical and Thermal Modeling of High-Speed Machining with Chamfered Tools,” ASME Journal of Manufacturing Science and Engineering, Vol. 130, 2008.
Y. Karpat and T. Özel, “Mechanics of High Speed Cutting with Curvilinear Edge Tools,” International Journal of Machine Tools and Manufacture, Vol 48, pp. 195-208, 2008
Y.Karpat, “Investigation of Ductile Fracture Mechanics and Cutting Tool Edge Radius on The Size Effect in Machining”, 13th International Conference on Machine Design and Production, 2008, Istanbul, Turkey.
2007
T. Özel, Y. Karpat, L. Figueira and J. P. Davim, “Modeling of Surface Finish and Tool Wear in Hard Turning of AISI D2 Steel Using Ceramic Wiper Inserts,” Journal of Materials Processing Technology, Vol 189, pp. 192-198, 2007
T. Özel, Y. Karpat, “Identification of Constitutive Material Model Parameters for High-Strain Rate Metal Cutting Conditions Using Evolutionary Computational Algorithms,” Materials and Manufacturing Processes, Vol.22, pp. 656-667, 2007.
Y. Karpat and T. Özel, “Multi-Objective Optimization For Turning Processes Using Neural Network Modeling And Dynamic-Neighborhood Particle Swarm Optimization,” International Journal of Advanced Manufacturing Technology, Vol. 35, No.3-4, November 2007, pp. 234-247.
Y. Karpat and T. Özel “3-D FEA of Hard Turning: Investigation of PCBN Cutting Tool Micro-Geometry Effects” Transactions of North American Manufacturing Research Institute Vol. XXXV, 2007.
2006
Y. Karpat and T. Özel, “Predictive Analytical and Thermal Modeling of Orthogonal Cutting Process. Part II: Effect of Tool Flank Wear on Tool Forces, Stresses and Temperature Distributions,” ASME Journal of Manufacturing Science and Engineering, Vol. 128, pp 445- 453, 2006
Y. Karpat and T. Özel, “Predictive Analytical and Thermal Modeling of Orthogonal Cutting Process. Part I: Predictions of Tool Forces, Stresses and Temperature Distributions,” ASME Journal of Manufacturing Science and Engineering, Vol. 128, pp 435-444, 2006
Y. Karpat and T. Özel, “Identification of Friction Factors for Chamfered and Honed Tools Through Slip-Line Field Analysis”, 2006 ASME Conference on Manufacturing Science and Engineering. October 8-11, 2006, Ypsilanti, Michigan
Y. Karpat and T. Özel, “An Integrated Analytical Thermal Model For Orthogonal Cutting With Chamfered Tools”, Transactions of North American Manufacturing Research Institute Vol. XXXIV, 2006.
Y. Karpat and T. Özel, “Swarm-Intelligent Neural Network System (SINNS) Based Multi-Objective Optimization of Hard Turning,” Transactions of North American Manufacturing Research Institute, Vol. XXXIV, pp. 9-16, 2006.
2005
T. Ozel, Y. Karpat, “Predictive Modeling of Surface Roughness and Tool Wear in Hard Turning using Regression and Neural Networks”, International Journal of Machine Tools and Manufacture, Vol. 45, pp 467-479, 2005.
Y. Karpat and T. Özel, “Hard Turning Optimization Using Neural Network Modeling and Swarm Intelligence,” Transactions of North American Manufacturing Research Institute, Vol. XXXIII, 2005, pp. 179-186.
Y. Karpat and T. Özel, “An Analytical-Thermal Modeling Approach for Predicting Forces, Stresses and Temperatures in Machining with Worn Tools,” Proceedings of IMECE’05, 2005 ASME International Mechanical Engineering Congress & Exposition, Orlando, Florida, November 5-11,
2005
Y. Karpat, E. Zeren, T. Özel, “Workpiece Material Model Based Predictions for Machining Processes”, Transactions of North American Manufacturing Research Institute, Vol. XXXIII, 2005.
2004
T. Özel and Y. Karpat, “Predictive Modeling of Hard Turning Processes Using Neural Networks,” CD Proceedings of 13th Industrial Engineering Research Conference (IERC), Extended Abstract, May 15-19, 2004, Houston, Texas.
2003
T. Özel and Y. Karpat, “Prediction of Surface Roughness and Tool Wear in Finish Dry Hard Turning Using Back Propagation Neural Networks”, Proceedings of the 17th International Conference on Production Research (ICPR), August 3-7, 2003, Blacksburg, Virginia