Dynamic Testing Materials
Abstract
The subject of this project was dynamic testing of materials at high strain rates Most of the effort was directed toward the Taylor Impact test. The Taylor Test is important because it helps bridge the gap between the split-Hopkinson pressure bar and flyer plate experiments. Another important feature of the Taylor test is the very large compressive strains that are achieved. New analytical tools were devised to reduce data from the Taylor test and a number of experiments were performed at the University of Alabama. To reduce the effect of radial inertia new low caliber launcher was built and 0.164 inch diameter specimens were tested. Taylor tests of viscoelastic materials for which a recovered deformed specimen was not possible, were also performed. In this case, a high speed film record of the impact event was substituted instead. Some progress was also made on quantifying the high rate behavior of some materials that are not candidates for the Taylor test. The mechanical properties of geologically based materials are often deduced from penetration tests where the appropriate rates and pressures are available. Improvements and modifications of existing one-dimensional hard target penetration models were undertaken.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2001
- Accession Number
- ADA417651
Entities
People
- Peter P. Gillis
- Stanley E. Jones
Organizations
- University of Alabama