Effect of impact damage on flexural strength of the C/C-SiC composites

Authors
Srivastava, VK Maile, K Klenk, A
Citation
Vk. Srivastava et al., Effect of impact damage on flexural strength of the C/C-SiC composites, MAT SCI E A, 271(1-2), 1999, pp. 38-42
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
271
Issue
1-2
Year of publication
1999
Pages
38 - 42
Database
ISI
SICI code
0921-5093(19991101)271:1-2<38:EOIDOF>2.0.ZU;2-U
Abstract
The effects of impact damage on flexural strength of oxidised and unoxidise d C/CSiC composites were investigated. Composite specimens were oxidised fo r 10 min at 1600 degrees C. Each sample was impacted for pre-impact damage at a constant impact velocity of 20 m s(-1) and with an impact energy of 90 J in a Split-Hopkinson Pressure Bar test instrument. The results indicate that the flexural strength of virgin C/C-SiC composite is affected by the p re-crack damage and oxidising process. During this process, the C/C-SiC com posite loses 20% of its strength owing to an increased incidence of microcr acks. (C) 1999 Elsevier Science S.A. All rights reserved.