Application of Fracture Mechanics to Space-Shuttle Windows
Article first published online: 2 JUN 2006
Journal of the American Ceramic Society
Volume 57, Issue 7, pages 319–323, July 1974
How to Cite
WIEDERHORN, S. M., EVANS, A. G., FULLER, E. R. and JOHNSON, H. (1974), Application of Fracture Mechanics to Space-Shuttle Windows. Journal of the American Ceramic Society, 57: 319–323. doi: 10.1111/j.1151-2916.1974.tb10910.x
- Issue published online: 2 JUN 2006
- Article first published online: 2 JUN 2006
- Received January 9, 1974; revised copy received February 28, 1974.
The fracture properties of an ultralow-expansion glass intended for use in windows for the Space Shuttle were characterized by strength and fracture-mechanics techniques to provide reliable design data. Proof-test diagrams for predicting minimum times-to-failure under specified service loads were developed from measurements of subcritical crack growth in water and air. Failure predictions were confirmed from strength measurements in water. In vacuum (<10−4 torr), the fracture behavior was similar to that of other high-SiO2 glasses, as evidenced by the absence of subcritical crack growth and by insensitivity of the critical stress intensity factor to temperature.