Effects of Tensile Loading on Upper Shelf Fracture Toughness
Abstract
The objective of this work is to develop some upper shelf, elastic- plastic experimental results to attempt to investigate the applicability of the Q and T stress parameters to the correlation of upper shelf initiation toughness and J resistance curves. The first objective was to obtain upper shelf J resistance curves, J sub Ic, and tearing resistance, T sub mat, results for a range of applied constraint. The J-Q and J-T stress loci were developed and compared with the expectations of the O'Dowd and Shih and the Betegon and Hancock analyses. Constraint was varied by changing the crack length and also by changing the mode of loading from bending to predominantly tensile. The principle conclusions of this work are that J sub Ic does not appear to be dependent on T stress or Q while the material tearing resistance is dependent on T stress and Q, with the tearing modulus increasing as constraint decreases. J- integral, Constraint, T Stress, J-Q Methodology, Tearing modulus, Geometry effects.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1994
- Accession Number
- ADA284364
Entities
People
- J. A. Joyce
- R. E. Link
Organizations
- Naval Surface Warfare Center Carderock Division