Teaching disciplines :

Solid Mechanics, Choice of Materials, Composites, Surface Mechanics

Recherche activities / CV :

Professor, Section 60 (Mechanics, Mechanical Engineering, Civil Engineering)

> 2012-2013, Post-doctoral fellowship, École des Mines de Paris

> 2013-2021, Assistant Professor, ISAE-SUPMECA

> 2021-2022, Associate Professor, ISAE-SUPMECA

> 2022-..., Professor, ISAE-SUPMECA

Diplomas  :

> Master of Science in Mechatronics, University of Siegen, Germany.

> PhD in Mechanics and Engineering (13 June 2012), Ecole Nationale d’Ingénieurs de Saint-Etienne / Ecole des Mines de Saint-Etienne, supervided by Professor J.-M. BERGHEAU (ENISE) and Professor S. DRAPIER (EMSE) : "Numerical simulation of the curing and machining of composite materials".
> Habilitation to supervise research in Engineering Science (November 9, 2021), Sorbonne University, UFR of Engineering : "Damage to bonded hybrid structures".

My research topics concern the analysis of damage to polymer matrix composites under the action of thermo-hygro-mechanical stresses. I work on problems related to the study of bonded assemblies, in the Tribology and Materials team. My contribution lies at the interface between fracture mechanics and damage mechanics. I am particularly interested in an experimental and analytical approach in order to determine the parameters involved in the numerical model.

Thesis supervision :

• SABBAGH Khaireddine, The applications of biosourced composites touch almost all industrial fields (Dir. Imad TAWFIQ, and Prof Chokri BOURAOUI (Université de Sousse), ED Science pour l’ingénieur, Cergy-Pontoise)

• Nathan CARPENTIER, Hygromechanical analysis of damage in metal/composite assemblies : micro/mesoscalemodelling and experimentation (Dir. Olga KLINKOVA, co-dir. Tony DA SILVA, Maria Letizia RAFFA, ED Science pour l’ingénieur, Cergy-Pontoise)

• Violeta YOTOVA, Study of fuctionalized composites based on recycled rubber and polymer materials under coupled multiphysical stresses (Dir. Olga KLINKOVA, co-dir. Prof Emin BAYRAKTAR (ISAE-Supméca) and Prof. Dimitar DONTCHEV (UTCM-Sofia), co-supervision with UTCM-Sofia, ED Science pour l’ingénieur, Cergy-Pontoise)

• Yao EKRA, Reduced fatigue models of structures assembled by welding junction (Dir. Jean-Luc DION, co-Dir. Olga KLINKOVA, Jean-Philippe CRETE (ISAE-Supméca) and M. Philippe MORDILLAT (DEA-TDS, RENAULT Group), Cifre RENAULT, ED SMEMAG N° 579)

Thesis defined under my supervision :

• Ichrak BEN AMOR, Analysis and optimisation of polyamide regeneration process (Dir. I.TAWFIQ, co-supervision with l’Ecole Nationale d’Ingénieurs de Sfax (ENIS), ED Science pour l’ingénieur, Cergy-Pontoise)

• Oumayma HAMLAOUI (2022) : Damage study of an FV/PBT composite application to a compression riveting operation (Dir. I. TAWFIQ, co-supervision with l’Ecole Nationale d’Ingénieurs de Sfax (ENIS), in the context of MOBIDOC, Européen EMORI project, ED Science pour l’Ingénieur, Cergy-Pontoise)

• Amal BECHIKH (2020) : Surface treatment and adhesion characterization in metal/biocomposite assemblies (Dir. I. TAWFIQ, co-supervised with École Nationale d’Ingénieurs de Tunis (ENIT), LR-MAI, ED Science pour l’Ingénieur, Cergy-Pontoise).

• Rawdha KESSENTINI (2018) : Contribution on the study of conveyor belts behavior subjected to operational loads (Dir. I. TAWFIQ, co-supervised with l’Ecole Nationale d’Ingénieurs de Sfax (ENIS), LA2MP, ED Paris-Saclay)

• Georges ZAMBELIS (2017)  : Damage tolerance analysis of bonded joints on helicopter’s blade leading edge. Study of defaults solicited in mode I and II, in static and fatigue in different environmental conditions (Dir. I. TAWFIQ, Cifre Airbus Helicopters, ED Paris-Saclay).

Publications :

• h-index : 9
• 18 peer-reviewed papers, 2 patent
• 35 internationals et nationals conferences

1. L. Laiarinandrasana, O. Klinkova, C. Ovalle, P. Cloetens, and T. Morgeneyer. Deformation and cavitation at the spherulite scale of semi-crystalline polymers : consideration to continuum mechanics approach. Journal of Theoretical and Computational Mechanics, December 20, 2023.

2.  I. Ben Amor, O. Klinkova, M. Baklouti I. Tawfiq, R. Elleuch. Mechanical recycling and its effects on physical and mechanical properties of Polyamides. Polymers 2023, 15(23), 4561. 

3. O. Hamlaoui, O. Klinkova, R. Elleuch, I. Tawfiq. Effect of the Glass Fiber Content of a Polybutylene Terephthalate Reinforced Composite Structure on Physical and Mechanical Characteristics. Polymers, 14, 17, 2022. 
4. R. Kessentini, O. Klinkova, I. Tawfiq, M. Haddar. Theoretical and experimental investigation of bonded patch repairs of a rubber reinforced composite conveyor belt. Polymers, 13 : 1710, 2021.
5. A. Bechikh, O. Klinkova, Y. Maalej, I. Tawfiq, R. Nasri. Effect of dry abrasion treatments on composite surface quality and bonded joints shear strength. International Journal of Adhesion and Adhesives, 2021.
6. A. Bechikh, O. Klinkova, Y. Maalej, I. Tawfiq, R. Nasri. Sandblasting parameter variation effect on galvanized steel surface chemical composition, roughness and free energy.International Journal of Adhesion and Adhesives, 2020.
7. R. Kessentini, O. Klinkova, I. Tawfiq, M. Haddar. Modeling the moisture diffusion and hygroscopic swelling of a textile reinforced conveyor belt. Polymer Testing, 75 : 159-166, 2019.
8. G. Zambelis, T. D. S. Botelho, O. Klinkova, I. Tawfiq, C. Lanouette. A new approach in testing fatigue fracture mechanics properties in asymmetrical bonded composite/metal assemblies.Composites Part B : Engineering, 158 : 390-399, 2019.
9. R. Kessentini, O. Klinkova, I. Tawfiq, M. Haddar. Transient hygrothermo-mechanical stresses analysis in multi-layers bonded structure with coupled bidirectional model. International Journal of Mechanical Sciences, 150 : 188-201, 2019.
10. R. Kessentini, O. Klinkova, H. Jrad, I. Tawfiq, M. Haddar. Analytical and numerical investigation of coupled hygro-thermo-mechanical model of multi-layers bonded structure. International Journal of Adhesion and Adhesives, 84 : 108-118, 2018.
11. G. Zambelis, T. D. S. Botelho, O. Klinkova, I. Tawfiq, C. Lanouette. Evaluation of the energy release rate in mode I of asymmetrical bonded composite/metal assembly. Engineering Fracture Mechanics, 190 : 175-185, 2018.
12. N. Selles, P. Cloetens, H. Proudhon, T. F. Morgeneyer, O. Klinkova, N. Saintier, L. Laiarinandrasana. Voiding mechanisms in deformed polyamide 6 observed at the nanometric scale. Macromolecules, 50(11) : 4372-4383, 2017.
13. Y. Cheng, L. Laiarinandrasana, L. Helfen, H. Proudhon, O. Klinkova, T. Baumbach, T. F. Morgeneyer. 3D damage micromechanisms in polyamide 6 ahead of a severe notch studied by in situ synchrotron laminography. Macromolecular Chemistry and Physics, 217(5) : 701-715, jan 2016.
14. L. Laiarinandrasana, N. Selles, O. Klinkova, T. F. Morgeneyer, H. Proudhon, L. Helfen. Structural versus microstructural evolution of semi-crystalline polymers during necking under tension : Influence of the skin-core effects, the relative humidity and the strain rate. Polymer Testing, 55 : 297-309, 2016.
15. L. Laiarinandrasana, O. Klinkova, F. Nguyen, H. Proudhon, T. F. Morgeneyer, W. Ludwig. Three dimensional quantification of anisotropic void evolution in deformed semicrystalline polyamide 6. International Journal of Plasticity, 83 : 19-36, 2016.
16. G. Chardon, O. Klinkova, J. Rech, S. Drapier, J.-M. Bergheau. Characterization of friction properties at the work material/cutting tool interface during the machining of randomly structured carbon fibers reinforced polymer with poly crystalline diamond tool under dry conditions. Tribology International, 81 : 300-308, 2015.
17. O. Klinkova, J. Rech, S. Drapier, J.-M. Bergheau. Characterization of friction properties at the workmaterial/cutting tool interface during the machining of randomly structured carbon fibers reinforced polymer with carbide tools under dry conditions. Tribology International, 44(12) : 2050-2058, 2011.
18. O. Klinkova, J. Rech, S. Drapier, J.-M. Bergheau. Characterization of cured-induced residual stresses. JEC composites, 67 : 49-52, 2011.