STRENGTH FOR GRAPHITE AND TWO TYPES OF PLASTIC TUBING UNDER BIAXIAL STRESSES,
Abstract
The ultimate strength behavior is reported for biaxial stresses for thin-walled tube specimens machined from tublar stock of a fine-grained graphite, a cast epoxy resin, and a cast acrylic thermoplastic. The tube specimens were subjected to combinations of internal pressure and axial loads - - both tension and compression. The experimental apparatus employed adapts to a conventional universal tester in such a manner that the internal pressure and axial load are essentially proportional during the test. A moderate range of loading rates was employed with the acrylic tubes. All tests were conducted at room temperature. The strength criteria for the graphite agreed best with the maximum stress theory for most of the combined stress states. The Stassi theory is used to correlate the strength data for the acrylic; data are presented for test times ranging from about 2 seconds to over 15 minutes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 15, 1963
- Accession Number
- AD0421617
Entities
People
- R. E. Ely
Organizations
- United States Army Aviation and Missile Command