Fracture response of SiOC based composites on dynamic loading

0450342 - ÚFM 2017 RIV GB eng J - Journal Article
Halasová, Martina - Černý, Martin - Strachota, Adam - Chlup, Zdeněk - Dlouhý, Ivo
Fracture response of SiOC based composites on dynamic loading.
Journal of Composite Materials. Roč. 50, č. 11 (2016), s. 1547-1554. ISSN 0021-9983. E-ISSN 1530-793X
R&D Projects: GA ČR GAP107/12/2445
Institutional support: RVO:68081723 ; RVO:61389013 ; RVO:67985891
Keywords : SiOC glass * basalt reinforcement * woven fabric * impact strength * energy consumption * fracture surface
Subject RIV: JL - Materials Fatigue, Friction Mechanics; JH - Ceramics, Fire-Resistant Materials and Glass (USMH-B); CD - Macromolecular Chemistry (UMCH-V)
Impact factor: 1.494, year: 2016

The fracture resistance to the dynamic loading of composites based on partially pyrolysed SiOC glass reinforced with basalt fibres was investigated using an instrumented impact test. The three-point bend loading configuration of the specimen bars prepared from the composite plate was used. Evolution of the matrix during the pyrolysis plays a key role in creation of bonding between the matrix and fibres, which was in the form of woven fabrics. Different temperatures of pyrolysis were applied in order to determine their influence on the fracture behaviour during impact tests. The high speed camera was employed to observe fracture response to impact loading during the fracture process. The temperature range for pyrolysis was chosen from 600 to 800 C with the step of 50 C. The partial melting of basalt fibres occurred at temperatures above 800 C. Observation of fractographic features on the fracture surfaces was performed using scanning electron microscopy.
Permanent Link: http://hdl.handle.net/11104/0259388