Co-investigator: prof. Ing. Ivo Dlouhý, CSc.
Number of Project: GA106/06/0724
Agency: Czech Science Foundation
Duration: 01. 01. 2006 - 31. 12. 2008

Brittle matrix composites represent a group of perspective materials. Despite of a relatively large progress in experimental and theoretical research of these materials there remains a wide range of unsolved problems that may by crucial for furtherdevelopment of the abovementioned group of composites. In contrast to the preceding project (GAČR 101/02/0683) focused to the problems of brittle matrix toughening by metal particles and/or long fibres, the project proposed aims to focus to crackshielding effects in brittle matrix composites reinforced by short fibres or brittle platelets. In both cases the key toughening effect of the reinforcement is due to contribution of several mechanisms, including debonding and microcrack propagationalong material interfaces, crack deflection, crack bridging and, especially, the synergism of those mechanisms. Experimentally, the object of investigation will be borosilicate matrix composites with grading contents of Al203 platelets and mullite matrix

Flašar, P., Dlouhý, I., Chlup, Z., Ando, K.: Crack healing behaviour of Al2O3/SiC nanocomposite ceramics; New Methods of Damage and Failure Analysis of Structural Parts, Ostrava, 2006, pp. 215-222.

Wu, J.P., Dlouhý, I., Chlup, Z., Rawlings, Boccaccini, A.R.: A Glass Ceramic Derived from High TiO2-Containing Slag – Microstructure Development and Mechanical Behaviour, Journal of the American Ceramic Society, 2006, Vol. 89, No. 8, pp. 2426-2433.

Kotoul, M., Pokluda, J., Šandera, P., Dlouhý, I., Chlup, Z., Boccaccini, A.: Experimental and theoretical investigation of fracture in glass matrix composites reinforced by alumina platelets; sb. Fracture Mechanics of Concrete and Conctere Structures, Vol. 3, Ed. Al. Carpinteri, P.G. Gambarova, G. Rerro, G.A. Plizzari, vyd. Taylor Francis, London 2007, ISBN 978-041-544-0660 (6th International Conference, Catania, Italy, June 17-22.2007), 1691-1698.

Kotoul, M., Pokluda, J., Šandera, P., Dlouhý, I., Chlup, Z., Boccaccini, A.R.: Kvantifikace zvyšování houževnatosti kompozitů typu sklená matrice/korundové destičky, In Porušování a design materiálů, Sborník semináře Křehký lom 2007, ISBN 978-80-254-0725-7, Dlouhý Ivo, Brno, ÚFM AVČR, 2007, 243-262.

Dlouhý, I., Kotoul, M., Vysloužil, T., Chlup, Z., Boccaccini, A. R.: Crack resistance curve in glass matrix composite reinforced by long SiC fibres; Journal of Materials Science 43, No. 12, pp. 4022–4030, DOI 10.1007/s10853-007-2317-z.

Kotoul, M., Vysloužil, T., Boccaccini, A. R., Dlouhý, I.: Crack growth in glass matrix composite reinforced by long SiC fibres; Theoretical and applied fracture mechanics 49, No. 2, 2008, pp. 158-170 doi:10.1016/j.tafmec.2007.11.001.

Dlouhý, I.: Lomová houževnatost křehkých materiálů; teze přednášky k profesorskému jmenovacímu řízení v oboru materiálové inženýrství, Brno, 2008, str. 1-26.

Dlouhý, I., Řehořek, L., Chlup, Z.: Tensile properties of open cell ceramic foams; Tensile properties of open cell ceramic foams; Fractography of Advanced Ceramics III, Stará Lesná, Slovensko, 2008.

Dlouhý, I., Chlup, Z., Hadraba, H., Kozák, V.: Fracture Toughness and Fracture Mechanisms in TiAl Based Intermetalics; New Methods of Damage and Failure Analysis of Structural Parts, Ostrava, 2008, pp. 235-243.

Kotoul, M.; Pokluda, J.; Šandera, P. Dlouhý, I.; Chlup, Z.; Boccaccini, A.R.: Toughening effects quantification in glass matrix composite reinforced by alumina platelets. Acta Materialia. 2008. 56(12). p. 2908-2918.

Dlouhý, I., Řehořek, L., Chlup, Z.: Tensile Properties of Open Cell Cermaic Foams; Key Engineering Materials. 2009. 409. p. 168-175.

Hadraba, H., Maca, K., Chlup, Z.: Alumina and Zirconia Based Layered Composites: Part 1 Preparation, EPD2008, AWAJI, Japonsko.

Hadraba, H., Chlup, Z., Maca, K., Bermejo, R.: Šíření indentačních trhlin v silně vázaných laminátech na bázi Al203/ZrO2, In Porušování a design materiálů, Sborník semináře Křehký lom 2007, ISBN 978-80-254-0725-7, Dlouhý Ivo, Brno, ÚFM AVČR, 2007, str. 219-230.

Hadraba, H., Dlouhý, I.: Vysokoteplotní provozní zkřehnutí oceli eurofer´97, Porušování a design materiálu, In Porušování a design materiálů, Sborník semináře Křehký lom 2007, ISBN 978-80-254-0725-7, Dlouhý Ivo, Brno, ÚFM AVČR, 2007, 85-96.

Hadraba, H., Chlup, Z., Maca, K., Bermejo, R.: Šíření indentačních trhlin v silně vázaných laminátech na bázi Al203/ZrO2; In Porušování a design materiálů, Sborník semináře Křehký lom 2007, ISBN 978-80-254-0725-7, Dlouhý Ivo, Brno, ÚFM AVČR, 2007, 219-230.

Hynek Hadraba, Karel Maca and Zdenek Chlup: Alumina and Zirconia Based Layered Composites: Part 1 Preparation, EPD2008, Key Engineering Materials Vol. 412 (2009) pp 221-226.

Zdenek Chlup, Hynek Hadraba: Alumina and Zirconia Based Layered Composites: Part 2 Fracture Response, EPD2008, AWAJI, Japonsko.

Chlup, Z., Dlouhý, I., Gürbüz, S., Dericioglu, A.F., Kozák, V.: Interfacial characterisation in transparent spinel matrix reinforced by SiC fibre, Fractography of Advanced Ceramics III, Stará Lesná, Slovensko, 2008.

Chlup, Z., Flašar, P., Dlouhý, I.: Response of Inherently Brittle Materials on Higher Loading Rates; 17th Eutopean conference on Fracture, Brno, 2008, pp. 659-666.

Řehořek, L.: Tensile strehgth of ceramic cellular materrials; New Methods of Damage and Failure Analysis of Structural Parts, Ostrava, 2008, pp. 245-251.

Chlup, Z., Dlouhý, I., Gürbüz, S., Dericioglu, A.F., Kozák, V.: Interfacial characterisation in transparent spinel matrix reinforced by SiC fibre; Key Engineering Materials. 2009. 409. p. 252-259.

Zdenek Chlup, Hynek Hadraba: Alumina and Zirconia Based Layered Composites: Part 2 Fracture Response, EPD2008, Key Engineering Materials Vol. 412 (2009) pp 227-232.

Kozák, V., Dlouhý, I., Chlup, Z.: Cohesive zone model and GTN model collation for ductile crack growth; MSMF-5, Abstracts Booklet, Brno 2007, s.46 (Materials Science Forum 567-568 ,2008, 145-148)