期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 41, 期 12, 页码 1768-1776出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2010.08.012
关键词
Ceramic matrix composites (CMCs); Creep; Mechanical testing
资金
- European Union
The long-term tensile creep behavior of all-oxide ceramic matrix composites (CMCs) was investigated The accompanying fiber bundle tests revealed a strong influence of processing conditions on the creep resistance CMCs with perpendicular fiber orientations were tested under two different load directions moreover CMCs with nearly unidirectional fiber texture were investigated Depending on the conditions the absence of a steady-state creep stage was observed in most cases and due to an early onset of damage As the majority of the samples was tested up to high strains and rupture different failure mechanisms could be evaluated An attempt was made to estimate fiber controlled creep rates via bundle data but this approach also revealed problems when elastic data from unidirectional composites are transferred to CMCs with more complex fiber architecture (C) 2010 Elsevier Ltd All rights reserved
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