Fracture Properties of 350 WT Steel at Very High Loading Rates

PDF

Authors
  1. Bassim, M.N.
  2. Matthews, J.R.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Fracture studies were conducted on 12.7 mm thick compact tension specimens of 350 WT steel at very high loading rates. The equipment used in the studies consisted of a specially designed Split Hopkinson Bar system capable of delivering sufficient energy to fracture the specimens on impact. Projectile speeds in the Split Hopkinson Bar were in excess of 50m/s. Following fracture, the extent of the shear lip as well as the stretch zone width which occurs before crack extension, were measured in all the specimens tested. Test temperatures ranged from -45 to 15C. It was found that above 0C, fracture is ductile with a shear lip extending across the fracture surface for the specimens with no fatigue precrack. For those with a fatigue precrack, the shear lips are smaller.
Keywords
350 WT steel
Report Number
DREA-SR-1999-162-PAP-27 — CONTAINED IN CA000150
Date of publication
01 Oct 1999
Number of Pages
11
DSTKIM No
CA000177
CANDIS No
511901
Format(s):
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: