ORTA DOGU TEKNIK UNIVERSITESI                                     MIDDLE EAST TECHNICAL UNIVERSITY
HAVACILIK VE UZAY MUHENDISLIGI BOLUMU                DEPARTMENT OF AEROSPACE  ENGINEERING    

Altan Kayran
Professor
Department of Aerospace Engineering
Middle East Technical University, Ankara, TURKEY

Professional Experience

Publications

Thesis

Courses

Research Interest

Project Experience

PUBLICATIONS

INTERNATIONAL JOURNAL PAPERS    

1. Kayran, A. and J.R. Vinson, Free Vibration Analysis of Laminated Composite Truncated Conical Shells, AIAA Journal (ISSN:0001-1452), Vol. 28, No.7, pp.1259-1269, (1990).

2. Kayran, A. and J.R. Vinson, Torsional Vibrations of Layered Composite Paraboloidal Shells, Journal of Sound and Vibration (ISSN:0022-460X), Vol. 141, pp. 231-244, (1990).

3. Kayran, A. and J.R. Vinson, The Effect of Transverse Shear Deformation on the Natural Frequencies of Laminated Composite Paraboloidal Shells, Journal of Vibration and Acoustics-Transactions of the ASME (ISSN: 1048-9002), vol. 8, pp. 1268-1274, (1990).

4. Kayran, A., J.R. Vinson and E.S. Ardic, A Method for the Calculation of Natural Frequencies  of Orthotropic Axisymmetrically Loaded Shells of Revolution, Journal of Vibration and Acoustics-Transactions of the ASME (ISSN: 1048-9002), Vol. 116, pp. 16-25, (1994).

5. Ardic, E.S., C. Bolcan ve A. Kayran, A Method of Strain and Stress Analysis of Composites for Nonlinear Strain Distribution Case, International Journal of Solid and Structures (ISSN: 0020-7683), Vol. 31, pp. 3457-3473, (1994).

6. Ardic, E.S., C. Bolcan ve A.Kayran, A Strain Analysis Method for the Failure Prediction in Laminated Composites, Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, (ISSN: 0893-1321), Vol. 209, pp. 43-51, (1995).

7. Kayran, A. ve G. Anlas, Effect of Stacking Sequence on Free Vibration Frequencies of Laminated Composite Circular Cylindrical Shells, Journal of Vibration and Control (ISSN: 1077-5463), Vol. 5, pp. 355-372, (1999).

8. Kayran, A., Flutter qualification of transport aircraft with store suspension, Aircraft Engineering and Aerospace Technology, (ISSN (print): 1748-8842, ISSN (online): 0002-2667), Vol. 76, No. 1, pp. 19-28, (2004).  

9. Kayran, A., Kussner s function in sharp edged gust problem- A correction, Journal of Aircraft, (ISSN (print): 0021-8669, ISSN (online): 1533-3868), Vol. 43, No.5, pp. 1596-1599, (2006).

10. Kayran, A., Flight flutter testing and aeroelastic stability of aircraft, Aircraft Engineering and Aerospace Technology, (ISSN (print): 1748-8842, ISSN (online): 0002-2667) Vol. 79, No. 2, pp. 150-162, (2007).

11. Kayran, A., and Yavuzbalkan, E., Semi-analytical study of free vibration characteristics of shear deformable filament wound anisotropic shells of revolution, Journal of Sound and Vibration, (ISSN: 0022-460X), Vol. 319, pp. 260-281, (2009).

12. Aydincak, I., and Kayran, A., An approach for the evaluation of effective elastic properties of honeycomb cores by finite element analysis of sandwich panels, Journal of Sandwich Structures and Materials, (ISSN (print): 1099-6362, ISSN (online): 1530-7972), Vol.11, No. 5, pp.385-408, (2009).

13. Kayran, A., Yavuzbalkan, E., Free vibration analysis of ring-stiffened branched composite shells of revolution, AIAA Journal (ISSN:0001-1452), Vol. 48, No.4,  pp. 749-762, (2010).

14. Konokman, HE., Çoruh, MM., and Kayran A., Computational and experimental study of high speed impact of metallic Taylor cylinders, ACTA Mechanica, Vol. 220, pp. 61-85, (2011), DOI 10.1007/s00707-011-0467-1.

15. Kayran, A., Ä°brahimoÄŸlu, CS., Effect of semi-geodesic winding on the vibration characteristics of filament wound shells of revolution, Journal of Applied Mechanics, Vol. 78 (6), pp. 061008-1 - 061008-11, September (2011).

16. Kayran, A., Ibrahimoglu C.S., Preliminary study on the applicability of semi-geodesic winding in the design and manufacturing of composite towers, 2014 J. Phys.: Conf. Ser. 555  012059, doi:10.1088/1742-6596/555/1/012059.

17. Gunel, M., Kayran, A., Non-Linear Progressive Failure Analysis of Open-Hole Composite Laminates Under Combined Loading, Journal of Sandwich Structures and Materials, Vol. 15(3), pp.309-339, (2013).

18. Gozcu, M.O., Kayran, A., Investigation of the effect of bending-twisting coupling on the load in wind turbines with superelement blade definition, 2014 J. Phys.: Conf. Ser. 524 012040, doi:10.1088/1742-6596/524/1/012040.

19. Sargin, H., Kayran, A., Comparison of transient and quasi-steady aeroelastic analysis of wind turbine blade in steady wind conditions, 2014 J. Phys.: Conf. Ser. 524 012051, doi:10.1088/1742-6596/524/1/012051.

20. Sayar, M.B., Kayran, A. Two Stage Fatigue Life Evaluation of Aircraft Fuselage Panel with a Bulging Circumferential Crack and a Broken Stringer, Fatigue Fract Engng Mater Struct, Vol: 37, pp. 494-507, (2014).

21. Dababneh, O., Kayran, A., Design, Analysis and Optimization of Thin Walled Semi-Monocoque Wing Structures Using Different Structural Idealizations in the Preliminary Design Phase,  International Journal of Structural Integrity, Vol 5,No:3 pp.214 – 226,  (2014).

22. Cinar, O., Erdal M., Kayran, A., Accurate Equivalent Models of Sandwich Laminates with Honeycomb Core and Composite Face Sheets via Optimization Involving Modal Behavior, Journal of Sandwich Structures and Materials, Vol.  19(2) pp. 139-166, DOI:10.1177/1099636215613934, 2017.

23. Cicek, K.F., Erdal M., Kayran, A., Experimental and Numerical Study of Process-Induced Total Spring-in of Corner-Shaped Composite Parts, Journal of Composite Materials, DOI: 10.1177/0021998316669993, Vol. 51(16), pp.2347-2361,2017.

24. Konokman, H.E., Kayran, A., Kaya, M., Aircraft Vulnerability Assessment against Fragmentation Warhead, Aerospace Science and Technology, Vol. 67, 2017, pp. 215-227.

25. Sener, O., Farsadi, T., Gozcu, M.O., Kayran, A., Evaluation of the Effect of Spar Cap Fiber Angle of Bending-Torsion Coupled Blades on the Aero-Structural Performance of Wind Turbines, Journal of Solar Energy Engineering, Vol. 140, August 2018, pp.041004-1-18, doi: 10.1115/1.4039350.

26. Atalay, O., Kayran, A., Load Reduction in Wind Turbines with Bend-Twist Coupled Blades without Power Loss at Underrated Wind Speeds, J. Phys.: Conf. Ser., 1037, 2018, 042015, doi :10.1088/1742-6596/1037/4/042015.

27. Farsadi, T., Rahmanian, M., Kayran, A., Geometrically nonlinear aeroelastic behaviour of pretwisted composite wings modeled as thin walled beams, Journal of Fluids and Structures Vol.83, 2018, pp. 259-292, https://doi.org/10.1016/j.jfluidstructs.2018.08.013.

28. Yildirim, A., Akay, A.A., Gulasik, H., Coker, D.,Gurses, E., Kayran, A., Development of bolted flange design tool based on artificial neural netrwork, Journal of Pressure Vessel Technology Vol.141,No.5, October 2019, pp. 051203-1-11, DOI: 10.1115/1.4043915.

29. Shabestari,S.S.H., Kayran, A., Development of a regression model for the life assessment of open-hole specimens with double through cracks utilizing stress intensity factor calculations via XFEM , Structural Integrity Procedia Vol.21,2019, pp. 154-165, DOI: 10.1016/j.prostr.2019.12.097.

30. Demirel, G.I, Kayran, A., Implementation of Dirlik s damage model for the vibration fatigue analysis , Structural Integrity Procedia Vol.21,2019, pp. 101-111, DOI: 10.1016/j.prostr.2019.12.091.

31. Farsadi, T., Rahmanian, M., Kayran, A., Reduced order nonlinear aeroelasticity of swept composite wings using compressible indicial unsteady aerodynamics, Journal of Fluids and Structures Vol.92, 2020, 102812, https://doi.org/10.1016/j.jfluidstructs.2019.102812.

32. Farsadi, T., Bozkurt, M.O., Coker, D., Kayran, A., Improvement of structural characteristics of composite thin-walled beams using variable stiffness concept via curvilinear fiber placement, Proc IMechE Part G: J Aerospace Engineering Vol.0(0), 2021, pp.1-16, DOI: 10.1177/0954410020988240.

33. Farsadi,T., Kayran, A., Classical flutter analysis of composite wind turbine blades including compressibility, Wind Energy Vol.24, 2021, pp. 69-91, DOI: 10.1002/we.2559.

34. Asadi, D., Farsadi,T., Kayran, A., Flutter Optimization of a Wing Engine System with Passive and Active Control Approaches, AIAA Journal Vol.59(4), 2021, pp. 1422-1440, https://doi.org/10.2514/1.J059568.

35. Farsadi,T., Kayran, A., Flutter study of flapwise bend twist coupled composite wind turbine blades, Wind and Structures Vol.32(3), 2021, pp. 267-281, DOI: https://doi.org/10.12989/was.2021.32.3.267.

36. Hasilci,Z., Bogoclu, ME., Dalkilic, AS., Kayran, A., Development of a prediction model using fully connected neural networks in the analysis of composite structures under bird strike, Journal of Mechanical Science and Technology Vol.36(2), 2022, pp. 709-722, DOI 10.1007/s12206-022-0119-5

INTERNATIONAL CONFERENCE PAPERS

1. Kayran, A., Free Vibration Analysis of Laminated Composite Truncated Circular Conical Shells, Proceedings of 30th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Mobile, Alabama, 788-801 April 1989.

2. Erarslanoglu, G., E.S. Ardic, A.Kayran ve C. Bolcan, A Method of Failure Prediction in Laminated Composites Subjected to Low Velocity Impact, Proceedings of Second Biennial European Joint Conference on Engineering Systems Design and Analysis (ESDA), Vol. 2, 111-118, 1994.

3. Kayran, A. ve G. Anlas., Effect of Lamination Arrangement on the Modal Characteristics of Laminated Composite Circular Cylindrical Shells, Proceedings of the Third International Conference on Composites Engineering, New Orleans, 435-436, 1996.

4. Kayran, A., Aeroelastic Stability of a Transport Aircraft with Wing Mounted Store Suspension-Part I: Analysis, Proceedings of ESDA04, 7th Biennial Conference on Engineering Systems Design and Analysis, Manchester, UK, 2004 (in CD-ROM).

5. Kayran, A., Aeroelastic Stability of a Transport Aircraft with Wing Mounted Store Suspension-Part II: Flight Test, Proceedings of ESDA04, 7th Biennial Conference on Engineering Systems Design and Analysis, Manchester, UK, 2004 (in CD-ROM).

6. Kayran, A., Yavuzbalkan, E., Numerical Integration Based Vibration Analysis of Anisotropic Branched Shells of Revolution with Ring Stiffeners, Proceedings of 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Honolulu, Hawaii, 23-26 April 2007, AIAA-2007-2114.

7. Kayran, A., Yavuzbalkan, E., Effect of Anisotropy on the Vibration Characteristics of Composite Shells of Revolution, Proceedings of 16th International Conference on Composite Materials- ICCM-16, Kyoto, Japan, 8-13 July 2007 (in CD-ROM).

8. Kayran, A., Free Vibration Characteristics of Composite Shells of Revolution with Variable Stiffness Coefficients, Proceedings of ESDA08, 9th Biennial Conference on Engineering Systems Design and Analysis, Haifa, Israel, 2008 (in CD-ROM).

9. Sercan Soysal, Altan Kayran, Engin Åženelt and Nafiz Alemdaroglu, Composite Manufacturing of the Wing of a Tactical Unmanned Air Vehicle, 7th International Conference on Composite Science and Technology, American University of Sharjah, United Arab Emirates, Jan. 20-22, 2009 (in CD-ROM-ISBN978-9948-427-11-7)

10. Sercan Soysal, Altan Kayran, and Nafiz Alemdaroglu, Structural Analysis of the Sandwich Composite Wing of a Tactical Unmanned Air Vehicle, 7th International Conference on Composite Science and Technology, American University of Sharjah, United Arab Emirates, Jan. 20-22, 2009 (in CD-ROM-ISBN978-9948-427-11-7)

11. Oygür, S.Ö, Kayran, A., A Numerical Integration Based Approach to the Analysis of Anisotropic Shells of Revolution Subjected to Non-Axisymmetric Loading, Proceedings of 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Palm Springs, California, 4-7 May 2009, AIAA-2009-2346.

12. Kayran, A., Aydıncak, İ., Assessment of Effective Elastic Properties of Honeycomb Cores by Finite Element Analysis of Sandwich Panels, Proceedings of 17th International Conference on Composite Materials- ICCM-17, Edinburgh, United Kingdom, 26-31 July 2009 (in CD-ROM).

13. Ozozturk, S., Kayran, A., Alemdaroglu, N., Seber, G., On the Design and Aeroelastic Stability Analysis of Twin Wing-Tail Boom Configuration Unmanned Air Vehicle, Proceedings of 52th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Denver, Colarado, 4-7 April 2011,  AIAA-2011-1918.

14. Sayar, B.,  Kayran, A. Comparison of Stress Intensity Factor Calculations in Cracked Sheets with Riveted Stringers by Analytical and Finite Element Method, 2^nd International Conference of Engineering Against Fracture (ICEAF II), Mykonos, GREECE, 22-24 June 2011.

15. Gunel, M., Kayran, A., Comparative Study of Linear and Non-Linear Progressive Failure Analysis of Composite Aerospace Structures, ICCS 16, 16th International Conference on Composite Structures, Porto, Portugal, 28-30 June 2011 (in CD-ROM).

16. Kayran, A., Ibrahimoglu, CS., Investigation of the Effect of Friction on the Stiffness and Vibration Characteristics of Filament Wound Composite Shells of Revolution, ICCS 16, 16th International Conference on Composite Structures, Porto, Portugal, 28-30 June 2011 (in CD-ROM).

17. Gunel, M., Kayran, A., Non-Linear Progressive Failure Analysis of Composite Aerospace Structures, ICCM 18, 18th International Conference on Composite Materials, Jeju Island, Korea, 21-26 August 2011 (in stick harddisk).

18. Kayran, A., Wind turbine components and materials, International 100% Renewable Energy Conference and Exhibition (IRENEC 2011),  Ä°stanbul, Turkey, 06-08 October 2011.

19. Kayran, A., Yavuzbalkan, E., and Ibrahimoglu, S. Investigation of the Effect of Geodesic and Semi-geodesic Winding on the Vibration Characteristics of Variable Stiffness Filament Wound Shells of Revolution, Proceedings of 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Honolulu, Hawaii, 23-26 April 2012, AIAA-2012-1472.

20. Gunel, M., and Kayran, A., Linear and Nonlinear Progressive Failure Analysis of Composite Aerospace Structures Under Combined Loading, Proceedings of 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Honolulu, Hawaii, 23-26 April 2012, AIAA-2012-1860.

21. Ozcan, G., Ozozturk, S., Senelt, E., Kayran, A., AlemdaroÄŸlu, N., Aero-Structural and Integrated Circuit Design of a Twin Wing-Tail Boom Configuration Tactical UAV, 2012 International Conference on Unmanned Aircraft Systems (ICUAS'12), Philadelphia, PA USA, June 12-15, 2012.

22. Sayar, M.B., Kayran, A. Two Stage Damage Tolerance Evalution of and Aircraft Fuselage Panel with a Circumferential Crack and a Broken Stringer, Proceedings of 54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, Boston, USA, 8-11 April 2013, AIAA-2013-1478.

23- Dababneh, O., Kayran, A., Design, Analysis and Optimization of Thin Walled Semi-Monocoque Wing Structures Using Different Structural Idealizations in the Preliminary Design Phase, 3^rd EASN Association International Workshop on AeroStructures, 9-11 October 2013, Milano, Italy.

24. Kayran, A., Static and dynamic analysis of shear deformable composite shells of revolution by semi-analytical approach, published in the Proceedings of the Jubilee 10th International Conference “Shell Structures, Theory and Applications (10th SSTA 2013), October, 2013, Gdańsk , Poland.

25. Konokman E.H, Kayran, A., Kaya, M., Analysis of Aircraft Surviability Against Fragmenting Warhead Threats, AIAA 2014-0355, AIAA Science and Technology Forum and Exposition 2014, Gaylord National Resort & Convention Center, 13-17 January 2014, National Harbor, MD, USA.

26. Gozcu, M.O., Olgun, M.N., Kayran, A., Investigation of the effect of off-axis spar cap plies on damage equivalent loads in wind turbines with superelement blade definition, AIAA 2014-1223, AIAA Science and Technology Forum and Exposition 2014, Gaylord National Resort & Convention Center, 13-17 January 2014, National Harbor, MD, USA.

27. Nalci, M.O., Kayran, A., Aeroservoelastic Modelling and Analysis of a Missile Control Surface with a Nonlinear Electromechanical Actuator, AIAA 2014-2055, AIAA Atmospheric Flight Mechanics Conference, AIAA Aviation and Aeronautics Forum and Exposition, 16-20 June  2014, Atlanta, GA, USA.

28. Gozcu, M.O.,  Kayran, A., Investigation of the effect of bending-twisting coupling on the load in wind turbines with superelement blade definition, Poster presentation, The Science of Making Torque from Wind  (TORQUE 2014), 17-20 July 2014, Technical University of Denmark, Copenhagen, Denmark.

29. Sargin, H.,Kayran, A., Comparison of transient and quasi-steady aeroelastic analysis of wind turbine blade in steady wind conditions, Poster presentation, The Science of Making Torque from Wind  (TORQUE 2014), 17-20 July 2014, Technical University of Denmark, Copenhagen, Denmark.

30. Kayran, A., Ibrahimoglu C.S., Preliminary study on the applicability of semi-geodesic winding in the design and manufacturing of composite towers, 2014 J. Phys.: Conf. Ser. 555  012059, doi:10.1088/1742-6596/555/1/012059.

31. Gozcu, M.O., Farsadi,T., Sener, O., Kayran, A., Assessment of the Effect of Hybrid GFRP-CFRP Usage in Wind Turbine Blades on the Reduction of Fatigue Damage Equivalent Loads in the Wind Turbine System, AIAA 2015-0999, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2015, 33rd Wind Energy Symposium, 5-9 January 2015, Kissimmee, Florida, USA.

32. Guldu, S., Kayran, A., Maximizing Buckling Load Factors of Fiber-Placed Composite Cylindrical Shells by Particle Swarm Optimization, AIAA 2015-0449, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2015, 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 5-9 January 2015, Kissimmee, Florida, USA.

33. Yilmaz, SE, Ozilhan T., Kayran, A., Gurses, E., Coker, D.,  Design of Experiments Study for Determination for the Study of the Effect of Contact Parameters in Bolted Flange Connections,Â’ International Conference on Advances in Mechanical Engineering, Ä°stanbul 2015-ICAMEÂ’15, 13-15 May 2015, Yıldız Technical University, Ä°stanbul, Turkey.

34. Gozcu, M.O., Farsadi,T., Sener, O., Kayran, A., ‘Reduction of Fatigue Damage Equivalent Loads in the Wind Turbine System Through the Use of Off-Axis Plies in the Spar Caps of Composite Wind Turbine Blades,’ 20^th International Conference on Composite Materials, Copenhagen, 19-24^th July 2015.

35- Yildirim, A., Akay, AA, Gulasik, H., Coker, D., Gurses, E., Kayran, A., Development of Bolted Flange Design Tool Based on Finite Element Analysis and Artificial Neural Network, IMECE2015-51021, Proceedings of the ASME 2015 International Mechanical Engineering Congress and Exposition, 13-19 November 2015, Houston, Texas, USA.

36. Bartan. B., Acar, B., Kayran, A., Three Dimensional Delamination Analysis in Composite Open Hole Tensile Specimens with Cohesive Zone Method, AIAA 2016-0980, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2016, 4-8 January 2016, San Diego, California, USA.

37. Farsadi,T., Kayran, A., Aeroelastic Stability Evaluation of Bend-Twist Coupled Composite Wind Turbine Blades Designed for Load Alleviation in Wind Turbine Systems, AIAA 2016-1009, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2016, 4-8 January 2016, San Diego, California, USA.

38. Farsadi,T., Kayran, A., Classical Aeroelastic Stability Analysis of Large Composite Wind Turbine Blades, AIAA 2016-1959, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2016, 4-8 January 2016, San Diego, California, USA.

39. Farsadi,T., Kayran, A., Structural Dynamics Analysis and Passive Control of Wind Turbine Vibrations with Tuned Mass Damper (TMD) Technique, AIAA 2016-1481, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2016, 4-8 January 2016, San Diego, California, USA.

40. Mert,M., Kayran, A., Post-Buckling Load Redistribution of Stiffened Panels in Aircraft Wingbox Structures, AIAA 2016-1974, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2016, 4-8 January 2016, San Diego, California, USA.

41. Atac, M.N.,  Kayran, A., Comparative Study of Finite Element Analysis and Geometrically Exact Beam Analysis of a Composite Helicopter Blade,  American Helicopter Society AHS 72nd Annual Forum,  17-19 May 2016, West Palm Beach, Florida, USA.

42. Isik, A.A.,  Kayran, A., Structural Optimization of Composite Helicopter Rotor Blades,  Paper Number 3002, American Society for Composites, 31^st Technical Conference and ASTM Committee D30 Meeting, September 19-22 2016, Williamsburg, Virginia, USA.

43. Kesemen, L., Kayran, A., High Strain Rate Material Characterization of Al 7075-T651 by Modified Taylor Impact Test and Velocity Interferometry, AIAA 2017-0354, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2017, 9-13 January 2017, Grapevine, Texas, USA.

44. Sener, O., Farsadi, T., Kayran, A.,  Effect of Fibre Orientation of Bend-Twist Coupled Blades on the Structural Performance of the Wind Turbine System, AIAA 2017-1167, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2017, 9-13 January 2017, Grapevine, Texas, USA.

45. Hayirli, U., Kayran, A.,  Stick Model Development of Aircraft Structures  for Dynamic Analysis, AIAA 2017-0407, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2017, 9-13 January 2017, Grapevine, Texas, USA.

47- Akay, AA, Gulasik, H., Coker, D., Kayran, A., Gurses, E.,  Experimental Study and Finite Element Analysis of Dovetail Attachments, IMECE2017-70180, Proceedings of the ASME 2017 International Mechanical Engineering Congress and Exposition, 3-9 November 2017, Tampa, Florida, USA.

48- Sanli V., Gurses, E.,  Coker, D., Kayran, A., Development of Artificial Neural Network Based Design Tool for Aircraft Engine Bolted Flange Connection Subject to Combined Axial and Moment Load, IMECE2017-70448, Proceedings of the ASME 2017 International Mechanical Engineering Congress and Exposition, 3-9 November 2017, Tampa, Florida, USA.

49- Farsadi, T., Sener, O., Kayran, A., Free Vibration Analysis of Uniform and Asymmetric Composite Pretwisted Rotating Thin Walled Beam, IMECE2017-70531, Proceedings of the ASME 2017 International Mechanical Engineering Congress and Exposition, 3-9 November 2017, Tampa, Florida, USA.

50- Inci, H., Kayran, A., Optimization of Variable Stiffness Composite Laminates by Particle Swarm and Whale Optimization Algorithms Utilizing Surrogate Models, 10.2514/6.2018-2242, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2018 , 8-12 January 2018, Kissimmee, Florida, USA.

51- Ozkaya, O., Kayran, A., Nonlinear Static Aeroelastic Behavior of Composite Missile Fin with Interlaminar and Intralaminar Damage, 10.2514/6.2018-1449, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2018 , 8-12 January 2018, Kissimmee, Florida, USA.

52- Soganci, S., Kayran, A.,Tuncer, I.H.,Coupling of a Multibody Simulation Tool for Rotary Systems with an Unsteady Viscous Flow Solver, 10.2514/6.2018-2065, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2018 , 8-12 January 2018, Kissimmee, Florida, USA.

53- Sener, O., Kayran, A., Structural Performance and Power Production of Wind Turbine Systems with Bend-Twist Coupled Blades in Underrated Wind Conditions, 10.2514/6.2018-1242, AIAA Science and Technology Forum and Exposition, AIAA SciTech 2018 , 8-12 January 2018, Kissimmee, Florida, USA.

54- Sener, O., Dede, O., Atalay, O., Atasoy, M., Kayran, A., Determination of Transverse Shear Moduli of Composite Core Materials Through Sandwich Beam Tests, 12th International Conference on Sandwich Structures ICSS-12 , 19-22 August 2018, EPFL, Switzerland.

55- Aydin, E., Kayran, A., Comparative Study of Pos-Buckling Load Redistibution in Stiffened Aircraft Panel With and Without Material Nonlinearity, IMECE2018-86346, Proceedings of the ASME 2018 International Mechanical Engineering Congress and Exposition , November 9-15, 2018, Pittsburgh, PA, USA.

59- Arpacioglu, B, Kayran, A., Comparative Structural Optimization Study of Composite and Aluminum Horizontal Tail Plane of a Helicopter, IMECE2019-11153, Proceedings of the ASME 2019 International Mechanical Engineering Congress and Exposition , November 11-14, 2019, Salt Lake City, UT, USA.

 1. Kayran, A., ‘Natural Vibrations of Layered Composite Paraboloidal Shells,Â’ Center for Composite Materials, University Industry Research Symposium, Newark, Delaware, September 1989.

 NATIONAL JOURNAL PAPER

1. Turgut, T., Kayran, A., Alemdaroğlu, N. ve Ceylan M., ‘Vakum torbalama yöntemi ile kompozit malzemeden yapı üretimi, örnek bir havacılık uygulaması,’ Mühendis ve Makina, TMMOB Makina Mühendisleri Odası Aylık Yayın Organı, Sayı: 566, 14-21, Mart 2007.

PAPERS PRESENTED AND PUBLISHED IN THE PROCEEDINGS OF INTERNATIONAL CONFERENCES HELD IN TURKEY AND NATIONAL CONFERENCES

1. Ardıç, E.S., Kayran, A ve G. Anlaş., ‘Bir Kompozit Malzemedeki Çatlak Ucu Gerilmelerin Klasik Olmayan Bir Yaklaşımla Belirlenmesi,’ VIII. Ulusal Mekanik Kongresi, 107-116, Antalya, 1993.

2. Kayran, A., ‘Impact Damage Assessment in Composite Structures,’ Proceedings of the 2nd Ankara International Aerospace Conference, Ankara, 141-148, 1998.

3. Kayran, A., ‘Kompozit Radom Yapılarının Serbest Titreşimi,’ 9. Ulusal Makina Teorisi Sempozyomu Bildiriler Kitabı, s. 195-205, Gaziantep Üniversitesi, Gaziantep, 15-17 Eylül, 1999.

4. Taş, C., Yaman, Y ve Kayran, A., ‘Hava Taşıtlarına Uygulanan Güçlendirilmiş Silindirik bir Dış Deponun Yapısal Analizi,’ 11. Ulusal Makina Teorisi Sempozyomu Bildiriler Kitabı, s. 469-480, Gazi Üniversitesi, Ankara, 4-6 Eylül, 2003.

5. Kayran, A, ve Yavuzbalkan, E., ‘Lif Sargılı Silindirik Kabuk Yapılarının Serbest Titreşim Analizi için Sayısal bir Yöntem,’ II. Ulusal Mühendislik Kongresi Bildiri ve Poster Kitabı, s. 329-339, Zonguldak Karaelmas Üniversitesi, Zonguldak, 11-13 Mayıs, 2006.

6. Kayran, A, ve Yavuzbalkan, E., ‘Çevresel GüçlendirilmiÅŸ Dallı Anizotropik Kabuk Yapılarının TitreÅŸim Analizi için Bir Yöntem,Â’ 1. Ulusal Havacılık ve Uzay Konferansı, CD-ROMÂ’da,  ODTÃœ, Ankara,  21-23 Eylül, 2006.

7. Kayran, A., ‘General Review of Aeroelastic Stability Flight Testing,’ AIAC-2007-025, 4th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 10-12 September 2007 (in CD-ROM).

8. Turgut,T., Kayran, A., ‘Structural Analysis of a Lightweight Composite Wing and Material Characterization,’ AIAC-2007-027, 4th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 10-12 September 2007 (in CD-ROM).

9. Kafdağlı, E., Kayran, A., ‘Development of a Sabot Design Tool for Aeroballistic Range Testing,’ AIAC-2007-032, 4th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 10-12 September 2007 (in CD-ROM).

10. Konakman, E., Kayran, A., and Özyörük, Y., ‘Lagrangian Hyrdocode Formulation for Large Deformation Problems and Methods to Prevent Volumetric Locking of Triangular Elements,’ AIAC-2007-072, 4th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 10-12 September 2007 (in CD-ROM).

11. Yavuzbalkan, E., Kayran, A., ‘Çok Katmanlı Kompozit Yapıdaki Kanat Kutularının Basitleştirilmiş Yapısal Analizi İçin Bir Yöntem,’ II. Ulusal Havacılık ve Uzay Konferansı, 15-17 Ekim 2008, İTÜ, İstanbul.

12. Yüksel, S., Kayran, A., Alemdaroğlu, N., ‘Kompozit bir Mini İnsansız Hava Aracının Gövde Üzerine Düşük Hızlı Darbeli İnme Analizleri,’ USMOS 2009, 3. Ulusal Savunma Uygulamaları Modelleme ve Simülasyon Konferansı, 17-18 Haziran 2009, ODTÜ, Ankara.

13. Kayran, A., Soysal S., Alemdaroğlu, N., ‘Co-cured and Secondary Bonding Method of Manufacturing Multi-Cell Box Beam and Wing Structures and by Vacuum Infusion and Vacuum Bagging Processes,’ AIAC-2009-030, 5th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 17-19 August 2009 (in CD-ROM).

14. Devellioğlu, Y., Kayran, A., ‘Electronic Packaging and Environmental Test and Analysis of an Electronic Unit,’ AIAC-2009-041, 5th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 17-19 August 2009 (in CD-ROM).

15. Konakman, E., Kayran, A., ‘Hydrocode Analysis and Experimental Verification of Taylor Impact Tests,’ AIAC-2009-068, 5th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 17-19 August 2009 (in CD-ROM).

16. Ekren, M., Kayran, A., ‘Structural Optimization of Wing Torque Boxes Using Different Idealizations in the Finite Element Model,’ AIAC-2009-120, 5th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 17-19 August 2009 (in CD-ROM).

17. Kayran, A., Aydıncak, İ., ‘Assessment of Effective Elastic Properties of Honeycomb Cores by Finite Element Analysis of Sandwich Panels via ANSYS,’ 14th Conference for Computer Aided Engineering and System Modeling, ODTÜ, Ankara, 5-6 Kasım 2009.

18. Sayar, B., Kayran, A., ‘Determination of Stress Intensity Factors in Cracked Sheets with Riveted Stringers by Analytical and Finite Element Method,’ AIAC-2011-074, 6th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 14-16 September 2011 (in CD-ROM).

19. Günel, M., Kayran, A., ‘Comparative Study of Linear and Non-Linear Progressive Failure Analysis of Composite Aerospace Structures,’ AIAC-2011-069, 6th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 14-16 September 2011 (in CD-ROM).

20. Özöztürk, S., Kayran, A., Alemdaroğlu, N., Seber, G. ‘Aeroelastic Stability Analysis of Twin Wing-Tail Boom Configuration Unmanned Air Vehicle,’ AIAC-2011-070, 6th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 14-16 September 2011 (in CD-ROM).

21. Dababneh, O., Kayran, A., ‘Design and Analysis of Thin Walled Semi-Monocoque Wing Structures Using Different Structural Idealizations in the Preliminary Design Phase,’ AIAC-2011-066, 6th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 14-16 September 2011 (in CD-ROM).

22. Dababneh, O., Kayran, A., ‘Structural Optimization of Thin Walled Semi-Monocoque Wing Structures Using Different Types of Finite Elements in the Preliminary Design Phase,’ AIAC-2011-064, 6th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 14-16 September 2011 (in CD-ROM).

23. Özöztürk, S., Kayran, A., Alemdaroğlu, N. Computational Aerodynamics and Structural Analysis of a Fully Composite Twin Wing-Tail Boom Configuration Unmanned Air Vehicle, AIAC-2011-071, 6th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 14-16 September 2011 (in CD-ROM).

24. Ä°brahimoÄŸlu, S., Kayran, A., AlemdaroÄŸlu, N. Investigation of the Effect of Preset Friction on the Stiffness and Vibration Characteristics of Filament Wound Composite Shells of Revolution, AIAC-2011-055, 6th Ankara International Aerospace Conference-AIAC, METU, Ankara, Turkey, 14-16 September 2011 (in CD-ROM).

25. Demircan, A., KurtuluÅŸ, D.F.,  ve Kayran, A., Kompozit Yapılı Mini Ä°HA'lar için Kalıp Ãœretim Teknikleri ve Aerodinamik Yüzeylerin Ãœretimi, IV. Ulusal Havacılık ve Uzay Konferansı, CD-ROMÂ’da,  Hava Harp Okulu, Ä°stanbul,  12-14 Eylül, 2012.

26. Atasoy, M., ve Kayran, A., Civatalı BaÄŸlantılarda Kanırtma Kuvvetlerinin Belirlenmesii, IV. Ulusal Havacılık ve Uzay Konferansı, CD-ROMÂ’da,  Hava Harp Okulu, Ä°stanbul,  12-14 Eylül, 2012.

27. Balevi, S., Kayran, A., Simulated Flutter Test of Wings, AIAC-2013-011,  7th Ankara International Aerospace Conference-AIAC, 11-13 September 2013, METU, Ankara, Turkey.

28. Konokman E.H, Kayran, A., Kaya, M., Survivability Analysis of  Aircraft under Fragmentation Warhead Threat, AIAC-2013-1156, 7th Ankara International Aerospace Conference-AIAC, 11-13 September 2013, METU, Ankara, Turkey.

29. Güldü, S., Kayran, A., Tursun G., Koçkar, A., Two Level Optimization of Fiber Placed Laminated Cylindrical Shells of Revolution, AIAC-2013-1127, 7th Ankara International Aerospace Conference-AIAC, 11-13 September 2013, METU, Ankara, Turkey.

30. Tola, C., Kayran, A., The Effect of Fiber Orientation Angle on Subsonic and Supersonic Flutter Characteristics of a Composite Missile Fin, AIAC-2013-012, 7th Ankara International Aerospace Conference-AIAC, 11-13 September 2013, METU, Ankara, Turkey.

31. Nalcı, M.O., Kayran, A., Aeroelastic and Control System Modeling of a Missile Control Fin for Aeroservoelastic Analysis, AIAC-2013-124, 7th Ankara International Aerospace Conference-AIAC, 11-13 September 2013, METU, Ankara, Turkey.

32. Nalcı, M.O., Kayran, A., Development of an Aeroservoelastic Mathematical Model of a Missile Control Fin, AIAC-2013-125, 7th Ankara International Aerospace Conference-AIAC, 11-13 September 2013, METU, Ankara, Turkey.

33. Ä°nci, H., Kayran, A., Continuous Fiber Path Optimization in Composite Structures, AIAC-2013-074, 7th Ankara International Aerospace Conference-AIAC, 11-13 September 2013, METU, Ankara, Turkey.

34. Atasoy, M., Kayran, A., ‘Determination of Prying Loads on Bolted Connections,’ AIAC-2013-119, 7th Ankara International Aerospace Conference-AIAC, 11-13 September 2013, METU, Ankara, Turkey.

35. İbrahimoğlu, CS., Kayran, A., Semi-geodesic Winding of Composite Conical Shells – Possible Application for Composite Towers, RUZGEM 2013, Conference on Wind Energy Science and Technology, 3-4 October 2013, METU, Ankara, Turkey.

36. Yeniceli, S.C., Kayran, A., Design Optimization of a Whiffletree System for Static Testing of a Wind Turbine Blade, RUZGEM 2013, Conference on Wind Energy Science and Technology, 3-4 October 2013, METU, Ankara, Turkey.

37. Gözcü, M.O., Olgun, M.N., Kayran, A., Inverse Design of 3D Reference Wind Turbine Blades To Study Bending-Twisting Coupling Effect on Load Alleviation, RUZGEM 2013, Conference on Wind Energy Science and Technology, 3-4 October 2013, METU, Ankara, Turkey.

38. Gözcü, M.O., Olgun, M.N., Kayran, A., Effect of Off-Axis Plies on the Damage Equivalent Loads in Wind Turbines with Superelement Blade Definition, RUZGEM 2013, Conference on Wind Energy Science and Technology, 3-4 October 2013, METU, Ankara, Turkey.

39. Dede, O., ve Kayran, A., Kanat Hücum Kenarına KuÅŸ Çarpma  Probleminin Farklı Açık Sonlu Elemanlar Çözüm Yöntemleriyle Ä°ncelenmesi, UHUK-2014-064, V. Ulusal Havacılık ve Uzay Konferansı, CD-ROMÂ’da,  Erciyes Ãœniversitesi, Kayseri,  8-10 Eylül, 2014.

40- Yıldırım, A., Akay, AA, Gülaşık, H., Çoker, D., Gürses, E., Kayran, A., Parameters Correlation Study to Investigate the Effects of Geometric Variables on the Safety of Bolted Flange Connections, AIAC-2015-1107, 8th Ankara International Aerospace Conference-AIAC, 10-12 September 2015, METU, Ankara, Turkey.

41- Akay, AA, Gülaşık, H., Yıldırım, A., Çoker, D., Kayran, A., Gürses, E.,  Modeling of Circular Double Flange Joint Including Contact and Friction Effects, AIAC-2015-1201, 8th Ankara International Aerospace Conference-AIAC, 10-12 September 2015, METU, Ankara, Turkey.

42- Yılmaz, SE, Kayran, A., Gürses, E., Çoker, D.,  Parametric Study for the Study of the Effect of Contact Parameters for Plastic Analysis of Bolted Flange Connections, AIAC-2015-1068, 8th Ankara International Aerospace Conference-AIAC, 10-12 September 2015, METU, Ankara, Turkey.

43- Bartan, B., Kayran, A., Acar, B., Parametric Study of Delamination Analysis in Composites with Cohesive Zone Method, AIAC-2015-078, 8th Ankara International Aerospace Conference-AIAC, 10-12 September 2015, METU, Ankara, Turkey.

44- Mert, B., Kayran, A., Post-Buckling Load Redistribution of Stiffened Panels in Aircraft Wingbox Structures, AIAC-2015-116, 8th Ankara International Aerospace Conference-AIAC, 10-12 September 2015, METU, Ankara, Turkey.

45- Dede, O., Kayran, A., Investigation of Effects of Bird Strike on Wing Leading Edge By Using Explicit Finite Element Method, AIAC-2015-138, 8th Ankara International Aerospace Conference-AIAC, 10-12 September 2015, METU, Ankara, Turkey.

46-Sener, O., Farsadi,T., Gozcu M.O., Kayran, A., Utilizing Bending-Twisting Coupling in Composite Wind Turbine Blades in Achieving Reduction in Fatigue Loads, AIAC-2015-069, 8th Ankara International Aerospace Conference-AIAC, 10-12 September 2015, METU, Ankara, Turkey.

47- Ozozturk S., Kayran, A., Tuncer IH., Fluid Structure Interaction Based on Panel Method and Geometrically Nonlinear Structural Analysis, AIAC-2015-159, 8th Ankara International Aerospace Conference-AIAC, 10-12 September 2015, METU, Ankara, Turkey.

48- Arpacioglu, B. ve Kayran, A.,  Aluminyum bir helikopter yatay kuyruk kanadinin yapisal tasarimi ve optimizasyonu, UHUK-2016-1052, VI. Ulusal Havacilik ve Uzay Konferansi, Kocaeli Universitesi, Kocaeli,  28-30 Eylul, 2016.

49- Akel, E., Kargin V. ve Kayran, A.,  Helikopter pallerinin burulma yonunde elastik modellenmesi ve elastik modelin ucus mekanigi analizlerine etkisi, UHUK-2016, VI. Ulusal Havacilik ve Uzay Konferansi, Kocaeli Universitesi, Kocaeli,  28-30 Eylul, 2016.

50- Soganci, S., Kayran, A. ve Tuncer I.H.,  Helikopter pallerinin coklu kutleli benzetim araci ve iki boyutlu panel tabanli akis cozucusu ile etkilesimli analizi, UHUK-2016-128, VI. Ulusal Havacilik ve Uzay Konferansi, Kocaeli Universitesi, Kocaeli,  28-30 Eylul, 2016.

51- Hayirli, U. ve Kayran, A., Helikopter alt yapilarinin dinamik analizi icin dusuk derecede modelleme, UHUK-2016-1095, VI. Ulusal Havacilik ve Uzay Konferansi, ,  Kocaeli Universitesi, Kocaeli,  28-30 Eylul, 2016.

52- Sanli T.V., Akay, A.A., Yildirim, A., Gurses, E., Coker, D. ve Kayran, A., Eksenel, kesme ve moment yuku altindaki flanslar icin yapay sinir agina dayali civatali flans tasarim araci gelistirilmesi, UHUK-2016-1055, VI. Ulusal Havacilik ve Uzay Konferansi, ,  Kocaeli Universitesi, Kocaeli,  28-30 Eylul, 2016.

53- Enes A., Kayran, A., Investigation of the Effect of Boundary Conditions on the Buckling Coefficients of Stiffned Flat Panels, AIAC-2017-103, 9th Ankara International Aerospace Conference-AIAC, 20-22 September 2017, METU, Ankara, Turkey.

54- Ozturk, G., Kayran, A., Energy Absoption Mechanisms and Crash Analysis of Helicopter Seats, AIAC-2017-148, 9th Ankara International Aerospace Conference-AIAC, 20-22 September 2017, METU, Ankara, Turkey.

55- Demirel ,G.I., Kayran, A., The Effect of Modal Damping on Random Vibration Metal Fatigue Analysis, AIAC-2017-044, 9th Ankara International Aerospace Conference-AIAC, 20-22 September 2017, METU, Ankara, Turkey.

56- Inci, H., Kayran, A., Design Optimization of Variable Stiffness Composite Laminates Using Surrogate Models for Compliance and Buckling Load, AIAC-2017-164, 9th Ankara International Aerospace Conference-AIAC, 20-22 September 2017, METU, Ankara, Turkey.

57- Ozturan, B.I., Kayran, A., Multibody Simulation of Helicopter Rotor with Flexible Blade, AIAC-2017-163, 9th Ankara International Aerospace Conference-AIAC, 20-22 September 2017, METU, Ankara, Turkey.

58- Atasoy, M., Kayran, A., Comparison of 2D and 3D Homogenization Processes for Micromechanics Analysis of Unidirectional Composites, AIAC-2017-1065, 9th Ankara International Aerospace Conference-AIAC, 20-22 September 2017, METU, Ankara, Turkey.

59- Atalay, O., Farsadi, T., Kayran, A., Performance Study of Wind Turbines with Bend-Twist Coupled Blades at Underrated Wind Speeds, AIAC-2017-122, 9th Ankara International Aerospace Conference-AIAC, 20-22 September 2017, METU, Ankara, Turkey.

60- Ozkaya, O., Kayran, A., Nonlinear Static Aeroelastic Behaviour of Composite Missile Fin with Interlaminar Damage, AIAC-2017-051, 9th Ankara International Aerospace Conference-AIAC, 20-22 September 2017, METU, Ankara, Turkey.