Fracture behaviour of partially pyrolysed long fibre unidirectional composite

0332698 - ÚFM 2010 RIV PL eng A - Abstrakt
Chlup, Zdeněk - Černý, Martin - Glogar, Petr - Dlouhý, Ivo
Fracture behaviour of partially pyrolysed long fibre unidirectional composite.
11th International Conference and Exhibition of the European Ceramics Socitey. Kraków: Polish Ceramic Society, 2009.
[International Conference and Exhibition of the European Ceramic Society /11./. 21.06.-25.06.2009, Krakow]
Grant CEP: GA ČR GA106/09/1101
Výzkumný záměr: CEZ:AV0Z20410507; CEZ:AV0Z30460519
Klíčová slova: basalt fibre * composite * fracture toughness * fracture micromechanism * pyrolysis
Kód oboru RIV: JI - Kompozitní materiály

Fracture behaviour of partially pyrolyzed at 650°C or 750°C unidirectional basalt fibre composites with polysiloxane matrix were under investigation. Fracture toughness determined at both room and elevated temperature was used as a main parameter to optimize heat treatment. All results were compared with the data of composite in cured only state at 250°C. The pull-out fracture mechanism employed in the fracture process was examined. Different degree of involvement and efficiency of the pull-out mechanism was found with respect to the pyrolysis temperature and/or testing temperature. Optical and scanning electron microscopy was used for fractographycal analysis.
Trvalý link: http://hdl.handle.net/11104/0177869