CORRELATION OF LABORATORY TESTS WITH FULL SCALE SHIP PLATE FRACTURE TESTS: A STUDY OF STRAIN GRADIENTS.
Abstract
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 08, 1949
- Accession Number
- AD0635794
Entities
People
- E. P. Klier
- F. C. Wagner
- J. L. Fisher
- M. Gensamer
Organizations
- Pennsylvania State University