Monotonic and Fatigue Loading Behavior of an Oxide/Oxide Ceramic Matrix Composite (Paperback) (ISBN-13: 9781288280490)

The demanding environment in aircraft turbine engines has driven the development of many innovative high temperature materials. This thesis examines one of the latest of these materials, an oxide/oxide ceramic matrix composite (CMC), N720/A. This CMC consists of a porous alumina matrix reinforced by Nextel 720 fibers in a balanced 8 harness satin weave. To characterize this material, monotonic tensile and cyclic fatigue tests were performed at room temperature and at 1200 . The effects of moisture on fatigue behavior were also investigated at 1200 . Modulus, maximum and minimum strain and stress strain hysteresis were monitored during the cycling to characterize fatigue damage mechanisms. Retained strength of all specimens that survived I Os cycles was also characterized. Microscopy and fractography were used to examine microstructure, damage mechanisms, and fracture surfaces. N720/A was found to have good room temperature and high temperature properties.

Author: Steven G. Steel
ISBN-10: 1288280491
ISBN-13: 9781288280490
Publisher: Biblioscholar
Language: English
Published: 11/12/2012
Pages: 138
Format: Paperback
Weight: 0.57lbs
Size: 9.69h x 7.44w x 0.30d