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)

  • Supplemental Notes:
    • See also AD-635 766.
  • Corporate Authors:

    Pennsylvania State University, University Park

    School of Mineral Industries, Experiment Station
    University Park, PA  United States  16802
  • Authors:
    • Klier, E P
    • Wagner, F C
    • Fisher, J L
    • GENSAMER, M
  • Publication Date: 1949-6-8

Media Info

  • Pagination: 83 p.

Subject/Index Terms

Filing Info

  • 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