CURRENT TESTS FOR EVALUATING FRACTURE TOUGHNESS OF SHEET METALS AT HIGH STRENGTH LEVELS
Technical Report
·
OSTI ID:4148532
The testing procedures that are being used to evaluate the fracture toughness of high-strength sheet metals are described. These procedures were used primarily for alloy steels, but may be used for high strength titanium and aluminum alloys and other metals. A number of testing procedures were developed for measuring the relative fracture toughness of sheet metals as a result of brittle failures in solid propellant rocket cases. These tests involve tensile loading of notched specimens; bending of flat and notched specimens; impact loading of notched specimens; bulging of unnotched, notched, and welded specimens; and combinations of tensile loading and internal pressuring of cylindrical specimens. None of these have been accepted as standard tests and correlation of test data with pressure vessel performance is very limited. (auth)
- Research Organization:
- BAttelle Memorial Inst. Defense Metals Information Center, Columbus, Ohio
- NSA Number:
- NSA-14-011775
- OSTI ID:
- 4148532
- Report Number(s):
- DMIC-124; PB-151081
- Country of Publication:
- United States
- Language:
- English
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