Fracture Analysis of External Defects in the 105 mm Tank (L7A1) Gun Barrel,
Abstract
The use of autofrettage to increase the permissible firing pressures in large caliber gun barrels leads to the development of tensile residual stresses near the external surface of the barrel, and these stresses increase the probability of barrel failure through the growth of a pre-existing defect situated near the tube external surface. Fracture mechanics analyses of such defects necessarily involve estimating the residual stresses in addition to the firing stress distribution in the barrel wall. This report illustrates the way in which such estimates may be obtained and, as an example, a defective barrel is investigated for suitability for use outside normal service conditions, resulting in the proposal that the barrel be used for proof and experimental purposes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1980
- Accession Number
- ADA093066
Entities
People
- Graham Clark
Organizations
- Defence Science and Technology Group