Measurement of critical stress intensity factor in C/C–SiC composites under dynamic and static loading conditions

Autor:	Vijay K. Srivastava, K. Maile
Rok vydání:	2004
Předmět:	Materials science Scanning electron microscope Composite number General Engineering Bending Split-Hopkinson pressure bar chemistry.chemical_compound chemistry Ultimate tensile strength Ceramics and Composites Silicon carbide Composite material Stress intensity factor Bar (unit)
Zdroj:	Composites Science and Technology. 64:1209-1217
ISSN:	0266-3538
DOI:	10.1016/j.compscitech.2003.09.025
Popis:	In the present investigations split Hopkinson pressure bar (SHPB) and four point bending tests were performed to determine the stress intensity factor of oxidised (1600 °C for 15 min) and unoxidised chevron notched carbon–carbon silicon carbide (C/C–SiC) composite specimens. The split Hopkinson input bar was used to load the pre-cracked specimen with the reflected tensile pulse from the end of the specimen, whereas, four point bending test was used to load the pre-cracked specimen with gradual transfer of bending force to the variation of loading rate. The morphology of the fractured areas was examined by the scanning electron microscope analysis. These results clearly indicate that the stress intensity factor of C/C–SiC composite was very much effected by the loading rates and conditioning of materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ecc98d4a1cc661837e188529124817aa https://doi.org/10.1016/j.compscitech.2003.09.025 Zobrazit plný text záznamu Full Text from ScienceDirect