DETERMINATION OF THE DYNAMIC FRACTURE TOUGHNESS OF SUBMARINE HULL WELDMENTS

Authors
  1. Bassim, M.N.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Manitoba Univ, Winnipeg MAN (CAN)
Abstract
The report describes the results of fracture toughness studies as a function of applied strain rate on a number of submarine steels and steel weldments supplied by DREA. Tests at low strain rates were achieved by using a servo hydraulic testing machine, while the high strain rates were obtained by using a specially designed Split Hopkinson Pressure Bar. The fracture toughness was determined from measurement of the stretch zone ahead of the crack. This stretch zone is determined from low magnification scanning electron microscopy of the crack surface. TRUNCATED
Report Number
DREA-CR-92-423 — Contractor Report
Date of publication
15 Apr 1992
Number of Pages
46
DSTKIM No
92-03300
CANDIS No
125750
Format(s):
Hardcopy;Originator's fiche received by DSIS

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