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- Title
Evaluating the linear normalization technique for deriving J -resistance curves.
- Authors
TARPANI, J. R.; COLAFEMEA, A. A.; BOSE FILHO, W. W.; SPINELLI, D.
- Abstract
ABSTRACT In this paper, results from the linear normalization (LN) technique of Reese and Schwalbe for deriving J- crack resistance (J –R ) curves have been compared, related to J –Δa (J -integral–ductile crack growth) data points, to those obtained from traditional elastic compliance technique. Research results regarding a nuclear grade steel exhibiting a wide range of elastic–plastic fracture resistance agree quite well for both techniques until a certain level of toughness of the material. Below this critical level, LN produces inconsistent results for the sub-sized compact tension specimens (0.4T C[T]). The evidence suggests that the loss of applicability of the LN technique can be determined on the basis of the η plastic factor (ηpl ) for the best linear correlation achieved for ΔP N –Δa (normalised load gradient–ductile crack growth) data.
- Subjects
PROBABILITY measures; ELASTICITY; STEEL
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2003, Vol 26, Issue 2, p97
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1046/j.1460-2695.2003.00600.x