Accession Number : AD0785034

Title :   Fracture Toughness Characterization of Shipbuilding Steels.

Descriptive Note : Final rept.,


Personal Author(s) : Hawthorne,J. R. ; Loss,F. J.

Report Date : 10 JUL 1974

Pagination or Media Count : 47

Abstract : New fracture control guidelines for welded ship hulls have been proposed as a result of an investigation sponsored by the Ship Structure Committee of the Maritime Transportation Research Board. These guidelines include fracture toughness requirements in terms of the Drop Weight-NDT temperature Dynamic Tear (DT) energy. To aid the implementation of these criteria an exploratory program was undertaken to characterize the dynamic fracture toughness of ordinary-strength shipbuilding steels, namely, ABS Grades A, B, C, D, E, and CS. Test materials (plate) were obtained at random from several shipyards and steel mills in an effort to characterize the products of current steel making practice. Fracture toughness trends were defined by means of Drop Weight-NDT, 1-in. DT and standard Charpy V-notch tests and the observed toughness characteristics were compared with the proposed toughness criteria. (Modified author abstract)

Descriptors :   *Steel, *Fracture(Mechanics), Toughness, Test methods, Ship structural components

Subject Categories : Metallurgy and Metallography
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE