Estimation of the fracture toughness of Tyranno Si-Ti-C-O fibres from flaw size and ''fracture mirror'' data measured in situ a 3-D woven SiC/SiC composite
by Ian J. Davies, Takashi Ishikawa
International Journal of Materials and Product Technology (IJMPT), Vol. 16, No. 1/2/3, 2001

Abstract: The fracture toughness, calculated from the size of initiating flaws, was estimated for Tyranno® LoxM Si-Ti-C-O fibres in situ a 3-D woven SiC/SiC composite that had failed under tensile loading at room temperature. The fibres had been subjected to a surface modification treatment prior to incorporation within the composite. Two distinct flaw populations (internal and surface) were noted within the fibres with associated fracture toughness values of 0.997 (± 0.062) and 1 .428 (± 0.103) Mpam1/2, respectively. The former value was similar to that of nominally similar Nicalon® Si-C-O fibres whereas the latter value was attributed to the presence of an unidentified 80 nm layer surrounding the fibre.

Online publication date: Fri, 01-Oct-2004

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials and Product Technology (IJMPT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com