Assistant
Prof. Dr. Yiğit Karpat
Bilkent
University
Department
of Industrial Engineering
Bilkent,
Ankara, TURKEY 06800
Phone: +90
312 290 22 63
Email: ykarpat@bilkent.edu.tr
TEACHING
IE 271
Operations Analysis and Design
IE 262
Manufacturing Processes
GE 401/402
Innovative Product Design (IE)
CURRENT RESEARCH
TOPICS
·
Finite
Element Modeling of Machining Titanium Alloy Ti6AL4V – funded by Tubitak (2009-2010)
·
Machining
of Carbon Fiber Reinforced Polymer Composites (CFRP) – funded by TUSAS-TAI A.S
(2009-2011)
·
Development
of Intelligent Miniature Machining Centers– funded
by Tubitak (in
collab. with Dr. Sinan Filiz(PI)) (2010-2013)
·
Physics
Based Modeling and Optimization of Machining Processes
·
Robotic
Machining
·
Sustainability
and Green Manufacturing
PUBLICATIONS
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,
2009.
T. Özel, Y.
Karpat, and A. Srivastava, "Hard Turning with Variable Micro-Geometry PcBN
Tools," CIRP Annals – Manufacturing Technology, Vol 57, 2008, 73-76.
Y. Karpat
and T. Özel, "Mechanics of High Speed Cutting with Curvilinear Edge Tools,"
International Journal of Machine Tools and Manufacture, 2008.
Y. Karpat
and T. Özel, “Analytical and Thermal Modeling of High-Speed Machining with
Chamfered Tools,” ASME Journal of Manufacturing Science and Engineering, 2008.
T. Özel, Y.
Karpat, L. Figueira and J. P. Davim, "Modelling of Surface Finish and Tool
Wear in Hard Turning of AISI D2 Steel Using Ceramic Wiper Inserts,"
Journal of Materials Processing Technology, 2007.
T. Özel, Y.
Karpat, "Identification of Constitutive Material Model Parameters for
High-Strain Rate Metal Cutting Conditions Using Evolutionary Computational
Algorithms," International Journal of Materials and Manufacturing
Processes, 2006.
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,
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 435- 444, 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 445- 453, 2006
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.
CONFERENCE
PUBLICATIONS
Y. Karpat,
“Titanyum Alaşımı Ti-6Al-4V Malzemesinin Ortagonal Kesilmesi Esnasında İşlem
Değişkenlerinin En Az Enerji Temelli bir Model ile Hesaplanması”, 1. Ulusaş
Talaşlı İmalat Sempozyumu, Yıldız Teknik Üniversitesi, 2-3 Ekim 2009.
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.
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.
Y. Karpat
and T. Özel “3-D FEA of Hard Turning: Investigation of PCBN Cutting Tool
Micro-Geometry Effects”, in press, NAMRC XXXV 2007.
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.
Y. Karpat,
E. Zeren, T. Özel, “Workpiece Material Model Based Predictions for Machining
Processes”, Transactions of North American Manufacturing Research Institute,
Vol XXXIII, 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,
T. Özel, J. Sockman, W. Shaffer, "Design and Analysis of Variable
Micro-Geometry Tooling for Machining Using 3-D Process Simulations," Proceedings
of International Conference on Smart Machining Systems, March 13-15, 2007
National Institute of Standards and Technology, Gaithersburg, Maryland, USA.
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 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.
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.
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