Acoustic Emission Tests of HF-1 Steel Shells
Abstract
Acoustic emission monitoring has been performed on seventeen hydrostatically loaded, pre-notched and fatigued HF-1 steel shells. A range of notch depths was used. One acoustic transducer was used during each test and its output was video tape recorded and later analyzed in playback while observing the oscilloscope display. The total acoustic emission event per test was found to be proportional to the degree of plasticity exhibited by the shell. No specific AE pattern was found which would predict shell mechanical behavior. An insensitivity, mechanically, to induced flaws is implicated by the grouping of yield and failure pressures over the range of notch depths. One test result, from a shell which displayed an unusual amount of ductility, is attributed to either a marked strain rate dependence in HF-1 steel, or to the material in that particular shell being unusual.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1978
- Accession Number
- ADA060605
Entities
People
- Coy M. Glass
- E. H. Walker
- S. Van Doren