Fatigue Failure Analysis of Polycarbonate Transparencies in Different Environmental Conditions.
Abstract
The investigation completed under the existing contract determines the extruded polycarbonate fatigue life dependency on elevated and cooling temperatures. The specimens were manufactured from the 1/2-inch flat polycarbonate sheet which is used as a structural component in laminates for some F-16 aircraft canopies. The results of the investigation showed that the elevated temperature is extremely dangerous. Fatigue lives of the specimens tested on different combinations of load and elevated temperature levels were always significantly (up to 10 times) less compared to those tested under the same load levels at room temperature. The surface topography failure modes also were different: ductile under room temperature and brittle under elevated temperatures. The investigations under cooling temperatures proved that the resistance to fatigue failure is substantially greater than that for room temperature.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1994
- Accession Number
- ADA305093
Entities
People
- Yulian B. Kin
Organizations
- Purdue Research Foundation