Accession Number:
AD0735434
Title:
Long-Term Strength of Anisotropic Composite Materials under Plane Stress State (Dlitelnaya Prochnost Anizotropnykh Plastmass v Ploskom Napryazhennom),
Descriptive Note:
Corporate Author:
ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA
Personal Author(s):
Report Date:
1971-10-21
Pagination or Media Count:
9.0
Abstract:
The long-term strength of anisotropic composite materials textolites, fiber glass, etc. under plane stress is considered. A criterion of strength generalizing the criterion of short-term strength for such materials is proposed. The theoretical results are illustrated in the case of glassbase textolites with a polyester binder. The long-term resistance limit of this material after 100, 500, 1,000 and 10,000 workload hours is defined. In the studies of the short-term strength criterion of a number of technical materials with an ortho-gonal anisotropy of mechanical properties textolites, layered pulp plastics, glass-base textolites, plywood, etc. the author proposes a short-term strength criterion for complex cases of stress. The criterion is based on the widely assumed validity of modeling a layered medium by the use of a homogeneous elastic anisotropic medium. Author, modified-PL
Descriptors:
Subject Categories:
- Laminates and Composite Materials