Elevated temperature fracture resistance of a sic whisker reinforced/polycrystalline Al2O3 matrix composite

✍ Scribed by M.G. Jenkins; A.S. Kobayashi; K.W. White; R.C. Bradt

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 919 KB
• Volume: 30
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(88)90060-4

✦ Synopsis

The fracture resistance of a Sic whisker/AlzO, matrix composite for the test temperature range of 20" to 1400°C was determined using chevron-notched and straightnotched, three-point bend specimens. Crack mouth opening displacement (CMOD) was continuously monitored throughout the fracture tests, using a laser interferometric strain gage (LISG). The crack growth resistance curves (R-curves) were determined from previously established relations between the CMOD compliance, effective crack length, and the load point displacement (LPD).