Group

Senior Scientist

Kamen Tushtev

Kamen Tushtev Dr.-Ing.


Am Biologischen Garten 2
IW3, Room 2180
28359 Bremen
Tel. 0421 218 64947

tushtev@uni-bremen.de

Research Interests

  • mechanical property and modelling of ceramic matrix composites
  • mechanics of bioceramic composites
  • numerical simulation (Finite Element Method)
  • mechanical testing of materials

Education

12/1998
Ph.D. in Mechanics and Strength of Materials
02/1992 - 02/1995 Ph.D. Student, Department of Strength of Materials, Technical University of Sofia, Bulgaria
10/1990 - 12/1991 Post-graduate course in Mechanical Systems, TU Sofia
10/1985 - 7/1990 Diploma in Mechanical Engineering, TU Sofia

Positions and Work Experience

02/2011 - Senior Scientist in the Advanced Ceramics Group, University of Bremen
09/2001 -01/2011 Postdoctoral research fellow, Ceramic Materials and Components, University of Bremen
10/1998 - 09/2001 Assistant professor, Department of Strength of Materials, TU Sofia
06/1995 – 09/1998 Research Engineer, Department of Strength of Materials, TU Sofia

Awards and Fellowships

5/2000 - 7/2000 NATO (DAAD) Research grant A/00/17151, Technical Mechanics, Martin-Luther-University Halle-Wittenberg

Teaching


Faserverbundwerkstoffe

Publications

  1. Damage analysis of 2.5D C/C-SiC composites subjected to fatigue loadings
    Journal of the European Ceramic Society
    Almeida, R. S. M.Li, Y.Besser, B.Xiao, P.Zhou, W.Brückner, A.Langhof, N.Tushtev, K.Krenkel, W.Rezwan, K.
    2019 (): p.. http://www.sciencedirect.com/science/article/pii/S0955221919300147
  2. Strong and super tough: Layered ceramic‐polymer composites with bio‐inspired morphology
    Journal of the American Ceramic Society
    Pogorelov, E.Tushtev, K.Arnebold, A.Koschek, K.Hartwig, A.Rezwan, K.
    2018 101(10): p.4732-4742. https://onlinelibrary.wiley.com/doi/abs/10.1111/jace.15717
  3. Interlaminar Shear Response of Carbon/Carbon in Torsion Tests
    Journal of Ceramic Science and Technology
    Krause, T.Almeida, R.Volkmann, E.Tushtev K.Koch, D.Rezwan, K.Grathwohl, G
    2018 9(): p.319-326. www.dx.doi.org/10.4416/JCST2018-00021
  4. Obtaining complex-shaped oxide ceramic composites via ionotropic gelation
    Journal of the American Ceramic Society
    Almeida, R.Pereira, T.Tushtev, K.Rezwan, K.
    2018 102(1): p.53-57. https://doi.org/10.1111/jace.15990
  5. On the Dimensional analysis for THE creep rate prediction of ceramic fibers
    Ceramics International
    Almeida, R.Al-Qureshi, Hazim A.Tushtev, K.Rezwan, K.
    2018 44(13): p.15924-15928. http://www.sciencedirect.com/science/article/pii/S027288421831438X
  6. A novel, hydroxyapatite-based screw-like device for anterior cruciate ligament (ACL) reconstructions
    The Knee
    Schumacher, T.Tushtev, K.Wagner, U.Becker, C.große Holthaus, M.Hein, Sebastian B.Haack, J.Heiss, C.Engelhardt, M.El Khassawna, T.Rezwan, K.
    2017 24(5): p.933-939. http://www.sciencedirect.com/science/article/pii/S0968016017301886
  7. A New Clinically Relevant T-Score Standard to Interpret Bone Status in a Sheep Model
    Med Sci Monit Basic Res
    Heiss, C.Kern, S.Malhan, D.Bocker, W.Engelhardt, M.Daghma, D. E. S.Stoetzel, S.Schmitt, J.Ivo, M.Kauschke, V.Lips, K. S.Tushtev, K.Rezwan, K.El Khassawna, T.
    2017 23(): p.326-335. http://www.ncbi.nlm.nih.gov/pubmed/28966340
  8. Thermal exposure effects on the long-term behavior of a mullite fiber at high temperature
    Journal of the American Ceramic Society
    Almeida, R.Bergmüller, E.Lührs, H.Wendschuh, M.Clauß, B.Tushtev, K.Rezwan, K.
    2017 100(9): p.4101-4109. http://dx.doi.org/10.1111/jace.14922
  9. Thermal Exposure Effects on the Strength and Microstructure of a Novel Mullite Fiber
    Journal of the American Ceramic Society
    Almeida, R., Bergmüller, E. L., Eggert, B. G. F., Tushtev, K., Schumacher, T., Lührs, H., Clauß, B., Grathwohl, G., Rezwan, K.
    2016 (): p.. http://dx.doi.org/10.1111/jace.14093
  10. Assessment of three oxide/oxide ceramic matrix composites: Mechanical performance and effects of heat treatments
    Composites Part A: Applied Science and Manufacturing
    Volkmann, E. Tushtev, K. Koch, D. Wilhelmi, C. Göring, J. Rezwan, K.
    2015 68(0): p.19-28. http://dx.doi.org/10.1016/j.compositesa.2014.09.013
  11. Tensile and creep performance of a novel mullite fiber at high temperatures
    Composites Part A: Applied Science and Manufacturing
    Almeida, R., Tushtev, K., Clauß, B., Grathwohl, G., Rezwan, K.
    2015 76(0): p.37-43. http://dx.doi.org/10.1016/j.compositesa.2015.05.013
  12. Influence of fiber orientation and matrix processing on the tensile and creep performance of Nextel 610 reinforced polymer derived ceramic matrix composites
    Materials Science and Engineering: A
    Volkmann, E.,Tushtev, K.,Koch, D.,Wilhelmi, C.,Grathwohl, G.,Rezwan, K.
    2014 614(0): p.171-179. http://dx.doi.org/10.1016/j.msea.2014.07.027
  13. Oxidation-induced microstructural changes of a polymer-derived Nextel™ 610 ceramic composite and impact on the mechanical performance
    Journal of Materials Science
    Volkmann, E.,Evangelista Lima, L., Tushtev, K., Koch, D., Wilhelmi, C.,and Rezwan, K.
    2014 49(2): p.710-719. http://dx.doi.org/10.1007/s10853-013-7752-4
  14. Influence of the Matrix Composition and the Processing Conditions on the Grain Size Evolution of Nextel 610 Fibers in Ceramic Matrix Composites after Heat Treatment
    Advanced Engineering Materials
    Volkmann, E., Barros, M. D., Tushtev, K., Pritzkow, W., Koch, D., Göring, J., Wilhelmi, C., Grathwohl, G., Rezwan, K.
    2014 (): p.. http://dx.doi.org/10.1002/adem.201400220
  15. A novel bioinspired multilayered polymer-ceramic composite with outstanding crack resistance
    Advanced Engineering Materials
    Tushtev, K., Gonsior, M.,Murck, M., Grathwohl, G., Rezwan, K.
    2014 16(2): p.156-160. http://dx.doi.org/10.1002/adem.201300204
  16. Oxidation Kinetics and Its Impact on the Strength of Carbon Short Fiber Reinforced C/SiC Ceramics
    Advanced Engineering Materials
    Shi, Y.,Tushtev, K.,Hausherr, J.-M.,Koch, D.,Rezwan, K.
    2013 15(1-2): p.19-26. http://dx.doi.org/10.1002/adem.201200130
  17. Interlaminar Mode I Crack Growth Energy Release Rate of Carbon/Carbon Composites
    Engineering Fracture Mechanics
    Krause, T.,Tushtev, K.,Koch, D.,Grathwohl, G.
    2013 100(): p.38-51. http://dx.doi.org/10.1016/j.engfracmech.2012.07.003
  18. Improvement of sound absorption and flexural compliance of porous alumina-mullite ceramics by engineering the microstructure and segmentation in topologically interlocked blocks
    Journal of the European Ceramic Society
    Carlesso, M., Giacomelli; R., Krause, T., Molotnikov, A., Koch, D., Kroll, S., Tushtev, K., Estrin, Y., Rezwan, K.
    2013 33(13-14): p.2549-2558. http://dx.doi.org/10.1016/j.jeurceramsoc.2013.05.006
  19. Enhancement of Sound Absorption Properties Using Topologically Interlocked Elements
    Scripta Materialia
    Carlesso, M.,Molotnikov, A.,Krause, T.,Tushtev, K.,Kroll, S.,Rezwan, K.,Estrin Y.
    2012  66(7): p.483-486. http://dx.doi.org/10.1016/j.scriptamat.2011.12.022
  20. Versagensverhalten eines Kohlenstoff-Faserverbundwerkstoffs unter Druckbeanspruchung
    Materialwissenschaften und Werkstofftechnik
    Horvath, J., Tushtev, K., Grathwohl, G., Koch, D.
    2012 43(11): p.924-930. http://dx.doi.org/10.1002/mawe.201200842
  21. On the nature of the stiffness of nacre.
    Mat. Sci. Eng.: C
    Tushtev, K.,Murck, M.,Grathwohl, G.
    2008 28 (7): p.1164-72.. http://dx.doi.org/10.1016/j.msec.2007.10.039
  22. Elastic properties of braided ceramic matrix composites.
    Int. J. Mater. Res.
    Tushtev, K.,Koch, D.,Grathwohl, G.
    2008 99(11): p.1262-1267. http://dx.doi.org/10.3139/146.101761
  23. Ceramic fiber composites: Experimental analysis and modeling of mechanical properties
    Composites Science and Technology
    Koch, D.,Tushtev, K.,Grathwohl, G.
    2008 68(5): p.1165-1172. http://dx.doi.org/10.1016/j.compscitech.2007.06.029
  24. Nacre properties in the elastic range. Influence of matrix incompressibility
    Comput. Mat. Sci.
    Dashkovskiy, S.,Suhr, B.,Tushtev, K.,Grathwohl, G.
    2007 41(1): p.96-106. http://dx.doi.org/10.1016/j.commatsci.2007.03.015
  25. Mechanismen und Modellierung der Verformung und Schädigung keramischer Faserverbundwerkstoffe
    Int. J. Mat. Res.
    Tushtev, K.,Koch, D.,Horvath, J.,Grathwohl, G.
    2006 97(10): p.1460 - 1469. http://www.ijmr.de/directlink.asp?MK101391
  26. Evaluation of mechanical properties and comprehensive modeling of CMC with stiff and weak matrices
    Advances in Science and Technology
    Koch, D.,Tushtev, K.,Horvath, J.,Knoche, R.,Grathwohl, G.
    2006 45(): p.1435-1443. http://dx.doi.org/10.4028/www.scientific.net/AST.45.1435
  27. Finite-Element-Simulation der nichtlinearen Verformung von Carbon/Carbon-Verbundwerkstoffen
    Forschung im Ingenieurwesen
    Tushtev, K.,Koch, D.
    2005 69(4): p.216-222. http://dx.DOI.org/10.1007/s10010-005-0005-1
  28. Versagensverhalten keramischer Faserverbundwerkstoffe mit poröser Matrix - experimentelle Untersuchungen und Modellierung
    Mat.-wiss. u. Werkstofftech.
    Tushtev, K.,Horvath, J.,Koch, D.,Grathwohl, G.
    2004 35(3): p.143-150. http://dx.doi.org/10.1002/mawe.200300719
  29. Deformation and Failure Modelling of Fiber Reinforced Ceramics with Porous Matrix
    Advanced Engineering Materials
    Tushtev, K.,Horvath, J.,Koch, D.,Grathwohl, G.
    2004 6(8): p. 664-669. http://dx.doi.org/10.1002/adem.200400094