Fatigue Behavior of a Cross-Ply Ceramic Matrix Composite Subjected to Tension-Tension Cycling with Hold Time

Author

Scott A. Grant

Date of Award

12-1994

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Aeronautics and Astronautics

Abstract

This study was carried out to investigate the elevated temperature behavior of the SiC-MAS5 cross- ply [0-90]_4S ceramic matrix composite manufactured by Corning Inc. to fatigue with loading waveforms that combine the characteristics of stress rupture and high cycle fatigue. The test results were compiled in the form of S-N (cycles to failure), S-T (exposure time versus cycles to failure), S-S (energy exposure versus cycles to failure), normalized modulus degradation, strain progression, and hysteresis loop progression. From the mechanical behavior demonstrated by these curves, relationships between the effect of the environment and loading waveform were developed. In addition, a post-mortem SEM analysis of the fracture surface was conducted and the results compared to the mechanical behavior.

AFIT Designator

AFIT-GAE-ENY-94D-16

DTIC Accession Number

ADA289418

Recommended Citation

Grant, Scott A., "Fatigue Behavior of a Cross-Ply Ceramic Matrix Composite Subjected to Tension-Tension Cycling with Hold Time" (1994). Theses and Dissertations. 6342.
https://scholar.afit.edu/etd/6342