CORRELATION OF LABORATORY TESTS WITH FULL SCALE SHIP PLATE FRACTURE TESTS: ANALYSIS OF TRUE-STRESS TRUE-STRAIN DATA ON PROJECT STEELS
The results of a study of the flow and fracture strengths of the project steels are considered. It appears that the flow- and fracture- strength concept of failure proposed by Ludwik is not adequate to account for the results obtained. The flow properties of the steels were studied as a function of temperature and prestrain. The test results were found to be adequately described by the expression, sigma = sigma sub o delta to the n power, in which sigma and delta are respectively true stress and natural strain, while sigma sub o and n are constants. Sigma sub o has been found to vary regularly with temperature while n has been found to undergo a transition for most of the steels at sufficiently low temperatures. Both sigma sub o and n appear to have fundamental significance and should ultimately be correlated in some manner with the engineering properties of the steels. (Author)
- See also AD-635 794.
Pennsylvania State University, University ParkSchool of Mineral Industries, Experiment Station
University Park, PA United States 16802
- Klier, E P
- Mack, J O
- Wagner, F C
- GENSAMER, M
- Publication Date: 1950-6-21
- Pagination: 65 p.
- TRT Terms: Deformation curve; Fracture mechanics; Fracture tests; Hulls; Materials tests; Rheology; Steel; Steel plates; Strain (Mechanics); Stresses; Structural analysis; Tensile properties; Transition point
- Identifier Terms: Ship Structure Committee
- Uncontrolled Terms: Ship hulls
- Old TRIS Terms: Ship plates; Steel testing
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00327700
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: SSC- 19 Prog Rpt.
- Contract Numbers: NOBS-31217, NOBS-50148
- Files: TRIS
- Created Date: Feb 18 1981 12:00AM