CORRELATION OF LABORATORY TESTS WITH FULL SCALE SHIP PLATE FRACTURE TESTS: A STUDY OF STRAIN GRADIENTS
Strain gradients normal to fracture surfaces were determined. These fracture surfaces were developed under the following conditions of test: (1) V-notch Charpy bars broken by impact at various locations within the transition zone, (2) V-notch Charpy bars bent, but not completely broken, by impact above the transition temperature, (3) slow bend Schnadt type bars broken below the transition temperature, and (4) 72-inch wide, center notch, tensile specimens broken with ductile and brittle behavior. The strain gradients were studied by means of hardness tests, metallographic methods and X-ray analysis. It is concluded that true cleavage separation is not accompanied by a measurable strain gradient but most 'brittle' or 'cleavage' fractures, so classified on the basis of gross appearance, contain some areas separated by a shear mechanism. (Author)
- See also AD-635 766.
Pennsylvania State University, University ParkSchool of Mineral Industries, Experiment Station
University Park, PA United States 16802
- Klier, E P
- Wagner, F C
- Fisher, J L
- GENSAMER, M
- Publication Date: 1949-6-8
- Pagination: 83 p.
- TRT Terms: Fracture mechanics; Fracture tests; Hardness; Hulls; Metallography; Prototype tests; Steel; Steel plates; Strain (Mechanics); Structural analysis; Surfaces
- Identifier Terms: Ship Structure Committee
- Uncontrolled Terms: Ship hulls
- Old TRIS Terms: Charpy tests; Ship plates
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00327707
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: SSC- 17 Prog Rpt.
- Contract Numbers: NOBS-31217, NOBS-34231
- Files: TRIS
- Created Date: Feb 18 1981 12:00AM