Strain Rate Sensitivity of Polymer-Matrix Composites under Mode I delamination
Final rept. Jun 1984-Apr 1987
WRIGHT RESEARCH AND DEVELOPMENT CENTER WRIGHT-PATTERSON AFB OH
Pagination or Media Count:
This effort examines the combined effects of temperature and strain- rate upon the Mode I fracture toughness of advanced composites. The material systems used were As4APC-2, a semi-crystalline thermoplastic matrix system and AS43502, a thermosetting epoxy matrix system. The focus of this effort was to investigate whether the Mode I fracture toughness varies with temperature and strain-rate for these systems. The applied crack opening displacement rates utilized were from 0.02 to 20.0 inches per minute and a temperature range from ambient to 350 deg F. Post failure fractographic examinations were utilized to correlate significant variations in mechanical properties with fractographic features. Mechanical test results were summarized via data plots with error bars to show which effects were statistically significant.
- Polymer Chemistry