Research Profile for Labeas Georgios


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General
Laboratory of Technology and Strength of Materials
Department of Mechanical and Aeronautical Engineering
Research Activity
Light Weight structures, Behaviour of aircraft structures, Composite material structures.

• Development of methodologies for Analysis of Light Weight structures
• Numerical simulation of the impact behaviour of aircraft structures
• Stress and failure analysis of cracked aircraft panels
• Numerical stress analysis of composite material structures
• Further scientific and research activities:
• Reviewer in Journals: Journal of Materials Processing Technology (Elsevier), Fatigue and Fracture of Engineering Materials and Structures (Blackwell), Composites part B: Engineering (Elsevier), European Union Funded research projects
• Member of the Local Scientific Organizing Committee of the Mesomechanics 2004 International Conference, Member of the European Aeronautics Science Network (EASN)
Research Infrastructure
 
 
Research Activities
Participation in running European Funded Research Projects, in most of them as scientific responsible for Univ. Patras
- Development and INnovative for Advanced ManufacturIng of Thermoplastics (DINAMIT)
- ECOnomic Advanced SHAping ProcEsses for integral structures (ECOSHAPE), (EADS-CRC-G)
- Technologies And TEchniques for new Maintenance concepts (TATEM), (Smiths Aerospace)
- Development of short distance WELding concepts for AIRframes (WELAIR), (EADS CCR-F)
- Development of Innovative and Advanced Laminates for Future Aircraft STructures (DIALFAST),(Airbus-D)
- AEROnautical application of wrought MAGnesium – AEROMAG
- Advanced Low Cost Aircraft Structures – ALCAS (Integrated Project IP
- A COncurrent approach to Manufacturing induced PArt distortion in aerospace ComponenTs – COMPACT
- Innovative fatigue & DAmage TOleraNce methods for the application of new structural concepts – DATON’
- Non-linear MUltiSCAale Analysis of Large Aero-Structures – MUSCA
Publications in Journals:
J1. Th. Kermanidis and G. Labeas
‘Static and Stability Analysis of Composite Plates by a Semi-Analytical Method’, Computers & Structures, Vol. 57, no. 4, pp. 673-679, 1995.

J2. J. Diamantakos, G. Labeas, Sp. Pantelakis and Th. Kermanidis,
‘A model to assess the fatigue behaviour of ageing aircraft fuselage’, Fatigue and Fracture of Engineering Materials and Structures, 24, pp. 677-686, 2001.

J3. K.I. Tserpes, G. Labeas, P. Papanikos and Th. Kermanidis
‘Strength prediction of bolted joints in graphite/epoxy composite laminates’, Composites Part B: Engineering, Vol. 33, is. 7, pp. 521-529, 2002.

J4. G. Labeas, Th. Kermanidis, J. Diamantakos
“Efficient engineering approaches for the prediction of fatigue propagation of corner cracks in the case of Multiple Site Damage”, Facta Universitatis, vol. 3, no. 13, pp. 671-688, 2003.

J5. G. Labeas, J. Diamantakos, Al. Kermanidis, Sp. Pantelakis
“Assessment of Widespread Fatigue Damage in the Presence of Corrosion”, Facta Universitatis, vol. 3, no. 13, pp. 689-706, 2003.

J6. D. Pavlou, G. Labeas, N. Vlachakis and F. Pavlou
“Fatigue Crack Propagation Trajectories Under Mixed Mode Cyclic Load”, Engineering Structures, 25, pp. 869-875, 2003.

J7. G. Labeas and Th. Kermanidis
“Crushing behaviour of the Energy Absorbing ‘Tensor Skin’ panels”, Fatigue and Fracture of Engineering Materials and Structures, vol. 26, pp. 449-457, 2003.

J8. K.I. Tserpes, P. Papanikos, G. Labeas and Sp. Pantelakis
“Fatigue damage accumulation and residual strength assessment of CFRP laminates”, Composite Structures, 63, pp. 219-230, 2004.

J9. Th. Diamantoudis, G. Labeas
‘‘Stress Intensity Factors of semi-elliptical surface cracks in pressure vessels by global-local Finite Element methodology’’, Engineering Fracture Mechanics, 72, pp.1299-1312, 2005.

J10. G. Labeas and J. Diamantakos
‘‘Analytical prediction of crack coalesce in Multiple Site Damaged Structures’’, International Journal of Fracture, 134, pp. 161-174, 2005.

J11. Th. Kermanidis, G. Labeas, M. Sunaric and R. Ubels,
‘‘Development and validation of a novel bird strike resistant composite leading edge structure’’, Applied Composite Materials, 12, pp. 327-353, 2005.

J12. P. Papanikos, K.I. Tserpes, G. Labeas and Sp. Pantelakis
‘‘Progressive damage modelling of bonded composite repairs’’, Theoretical and Applied Fracture Mechanics, 43, pp. 198-198, 2005.

J13. G. Labeas, J. Diamantakos and Th. Kermanidis
‘‘Crack link-up for multiple site damage using an energy density approach’’, Theoretical and Applied Fracture Mechanics, 43, pp. 233-243, 2005.

J14. G. Labeas and Th. Kermanidis
‘‘Stress multiaxiality factor for crack growth prediction using the strain energy theory’’, Theoretical and Applied Fracture Mechanics, 45, pp. 100-107, 2006.

J15. Al. Kermanidis, D. Stamatelos, G. Labeas and Sp. Pantelakis,
‘‘Tensile behaviour of corroded and hydrogen embrittled 2024 T351 aluminium alloy specimen’’, Theoretical and Applied Fracture Mechanics, 45, pp. 148-158, 2006.

J16. Th. Kermanidis, G. Labeas, M. Sunaric, A. Johnson and M. Holzapfel
‘‘Bird strike simulation on a novel composite leading edge design’’, International Journal of Crashworthiness, vol. 11, no. 3, pp. 189-202, 2006.

J17. G. Labeas and J. Diamantakos
‘‘Residual strength prediction of multiple cracked stiffened panels’’, Fatigue and Fracture of Engineering Materials and Structures, vol. 29, pp. 365–371, 2006.

J18. G. Labeas, J. Diamantakos and M. Sunaric
‘‘Simulation of the electro-impulse de-icing process of aircraft wings’’, AIAA Journal, vol. 43, no. 6 (2006)

J19. G. Labeas, S. Belesis and D. Stamatelos
‘‘Interaction of Damage Failure and Post-buckling behavior of Composite plates with cut-outs’’, accepted for publication in Composites Part B: Engineering, (2006)

J20. T.G. Chondros and G. N. Labeas
‘‘Torsional vibration of a cracked rod by variational formulation and numerical analysis’’, Journal of Sound and Vibration 301 (3-5), pp. 994-1006

Publication in books:
B1. Th. Kermanidis and G. Labeas
‘Behaviour of composite structures under impact loading’, invited contribution in Failure Analysis of Industrial Composite Materials, McGraw-Hill, 1999

B2. Sp. Pantelakis and G. Labeas
‘Constant and variable amplitude fatigue damage of laminated fibrous composites’ invited contribution in Failure Analysis of Industrial Composite Materials, McGraw-Hill, 1999

Publications in Conference proceedings:
C1. Sp. Pantelakis, G. Labeas, S. Kalogeropoulos and V. Schulze
‘‘Hot-Forming of Continuous Carbon Fiber Reinforced PEEK’’, Proc. of the third International Symposium COMP 90, 19 24 Oct. Patras, Greece, 1990, Amatec Publication, pp. 393-399.

C2. S. Pantelakis, Th. Kermanidis, G. Labeas and V. Schulze
‘‘Development of Aerospace Thermoplastic Composite Structural Components Using the Superplastic Forming Technique’’, Proc. of the 5th European Conference on Composite Materials, Bordeaux, France, 7 10 April, 1992, pp. 7-18.

C3. Th. Kermanidis and G. Labeas
‘‘Static analysis of Elastic Layered Plates using the Transfer Matrix method’’, Proc. of the 1st National Congress on Computational Mechanics, 3-4 Sept. 1992, Athens, Greece, pp.132-139.

C4. Th. Kermanidis and G. Labeas
‘‘Stability and Vibration Analysis of Composite Plates by semi - analytical method’’, Advances in Non-Linear Finite Element Methods, Civil - Comp Press, 1994, pp. 273-278.

C5. G. Labeas and Th. Kermanidis
‘‘Development of an annular anisotropic plate element using the Transfer Matrix Method’’, Proc. of the 1st Hellenic Conference on Composite Materials, Xanthi, 2-5 July 1997, pp. 495-507

C6. Th. Kermanidis, G. Labeas, C. Apostolopoulos and L. Michielsen
‘‘Numerical Simulation of Composite Structures under impact’’, Proc. of Structures Under Shock and Impact, pp. 591-600, Thessaloniki, 24-26 June 1998

C7. Th. Kermanidis, G. Labeas , Sp. Pantelakis, D. Kohlgrueber and J. Wiggenraad
‘‘Simulation of the Impact Response of Composite Aircraft Substructures’’, Proc. of Experimental techniques and design of composite materials, pp. 117-128

C8. A. Michielsen, J. Wiggenraad, L. Ubels, R. Frijns, G. Labeas and M. McCarthy
‘‘Design, Test and Analysis of Tensor Skin Panels for Improved Crashworthiness in Case of Water Impact’’, Proc. of Crash Safety Challenges and Innovative Solutions,Phoenix, Arizona, Sept. 14-16, 1998

C9. Th. Kermanidis, Sp. Pantelakis, G. Labeas and J. Diamantakos,
‘‘Influence of corrosive environment on the fatigue life of an ageing aircraft structure’’, Proc. of the 20th Symposium of the International Committee on Aeronautical Fatigue ICAF, 14-16 July, 1999, Washinghton, USA.

C10. Th. Kermanidis, G. Labeas, K.I. Tserpes and Sp. Pantelakis
‘‘Finite Element modelling of damage accumulation of bolted composite joints under incremental tensile loading’’, Proc. of ECCM , Barcelona 2000.

C11. G. A. Katsiaris, G. Labeas, G. Karahalios, and G. Pnevmatikos
‘‘Soft protection using submerged groin arrangements, Dynamic analysis of Stability and Review of Application Impacts’’, Proc. of 1st ‘Soft Shore protection Conference, pp. 227-260, Patras, Greece, 18- 22 October 2000.

C12. G. Labeas
‘‘Crashworthiness of composite aircraft structures’’, 4th CRACM Congress on Computational Mechanics, Patras, 27-29 June, 2002.

C13. Th. Kermandis, K. Tserpes, P. Papanikos, G. Labeas, Sp.G. Pantelakis
‘‘Fatigue damage accumulation and residual strength assesement of composite laminates through progressive damage modeling”, Proc. of Mesomechanics 2003, Tokyo, Japan, 26-28 Aug. 2003, pp. 167-174

C14. Th. Kermanidis, G. Labeas and M. Sunaric,
‘‘Material Damage Modeling and Techniques for Bird-Strike Impact Simulations on Composite Leading Edge’’, Proc. of the International Conference on Influence of Traditional Mathematics and Mechanics on Modern Science and Technology, 24-28 May, Messini, Greece, 2004, p.p 163-172

C15. Th. Kermanidis, G. Labeas and G. Diamantakos,
‘‘Investigation on the crack link-up criteria at multiple site damage conditions’’, In: G.C. Sih, Th.B. Kermanidis and Sp.G. Pantelakis (eds.) Proceedings of ‘Multiscaling in Applied Science and Emerging Technology’ Patras (2004) pp. 483-492.

C16. P. Papanikos, K. Tserpes and G. Labeas,
‘‘Progressive damage modelling of bonded composite repairs’’, In: G.C. Sih, Th.B. Kermanidis and Sp.G. Pantelakis (eds.) Proceedings of ‘Multiscaling in Applied Science and Emerging Technology’ Patras (2004) pp. 452-458.

C17. G. Labeas, S. Tsirkas, Al. Kermanidis, Sp. Pantelakis
‘‘Fatigue behaviour prediction of laser surface treated Aluminium plates through simulation of the laser stripping process’’, Proc. of the 11th International Conference on Fracture, 20-25 March, Turin, Italy, 2005.

C18. G. Labeas, S. Tsirkas, J. Diamantakos and Al. Kermanidis
“Effect of residual stresses due to laser welding on the Stress Intensity Factors of adjacent crack”, Proc. of 11th International Conference on Fracture, ICF-11, 20-25 March 2005, Torino, Italy.

C19. Sp. G. Pantelakis, G. Labeas, Al. Th. Kermanidis and D.Stamatelos
‘‘Numerical simulation of the tensile behaviour of corroded and hydrogen embrittled 2024 T351 aluminum alloy specimen’’, Proc. of Materials for Safety and Health Mesoscopic and Multiscale Consideration in Modern Science and Engineering, Montreal, Canada (2005) pp. 106-114..

C20. G. Labeas and Th. Kermanidis
‘‘Investigation on the stress multiaxiality factor for crack growth prediction using the strain energy density theory’’, Proc. of Materials for Safety and Health Mesoscopic and Multiscale Consideration in Modern Science and Engineering, Montreal, Canada (2005) pp. 283-291.

C21. Th. Kermanidis and G. Labeas
‘‘Simulation of High Velocity Impact on Composite Aircraft Leading Edge Structures’’, Euro-Pam 2004 Conference, Paris, 11-13 Octob. 2004

C22. G. Labeas and Th. Kermanidis
‘‘Simulation of Bird Strike on a Composite Leading Edge’’, Proc. of the ‘First European Conference for Aerospace Sciences EUCASS’, July 4-7th, 2005 , Moscow

C23. G. Labeas and Th. Kermanidis
‘‘Impact Behaviour Modelling of a Composite Leading Edge Structure’’, Proc. of Fracture of Nano and Engineering Materials and Structures, 16th European Conference on Fracture, July 3-7, 2006 Alexandroupolis, Greece, pp. 1259-1260 (πλήρης εργασία σε CD-ROM)

C24. G. Labeas and J. Diamantakos
‘‘An Integrated Methodology Assessing the Aging Behaviour of Aircraft Structures’’, Proc. of Fracture of Nano and Engineering Materials and Structures, 16th European Conference on Fracture, July 3-7, 2006 Alexandroupolis, Greece, pp. 1295-1296 (πλήρης εργασία σε CD-ROM)

C25. P. Petroyannis, G. Labeas, Sp. Pantelakis, E. Kamoutsi, V. Bontozoglou and G. Haidemenopoulos
‘‘Numerical Investigation of pre-corroded 2024 Aluminium Alloy’’, Proc. of Fracture of Nano and Engineering Materials and Structures, 16th European Conference on Fracture, July 3-7, 2006 Alexandroupolis, Greece, pp. 1297-1298 (πλήρης εργασία σε CD-ROM)

C26. G. Labeas, J. Diamantakos and Al. Kermanidis
‘‘Analysis of through cracks behaviour under residual stresses’’, in Proc. of MESO 2006
 
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