Journal ArticleDOI
Strain rate effects on fracture toughness of ship plate steels
TLDR
In this paper, the CTOD transition temperature curves of conventional ship plate grades, including modern high-strength steels, were determined at loading rates representing quasi-static, intermediate, and impact conditions.Abstract:
Full thickness fracture toughness of conventional ship plate grades, including modern high-strength steels, was determined at loading rates representing quasi-static, intermediate, and impact conditions. For testing at impact strain rates ({dot {epsilon}} = 5 s{sup {minus}1}), customized equipment was designed and developed for a drop tower. It was shown from the CTOD transition temperature curves that the transition temperature increase from quasi-static to intermediate rate (a three-order rate increase) is much greater than the increase from intermediate to impact (a two-order rate increase). Comparison of the dynamic CTOD, CVN, and NDTT indicated that the correlation between the CVN and 0.1-mm dynamic CTOD transition temperature does not hold for the TMCP steels, for which the CVN transition temperature is much lower. By contrast, the results display a very good correlation between the NDTT and 0.1-mm dynamic CTOD transition temperature for all of the steels tested in this program.read more
Citations
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Journal ArticleDOI
Overview of Structural Life Assessment and Reliability, Part I: Basic Ingredients of Fracture Mechanics
TL;DR: In this article, a series of review articles is presented to provide different issues pertaining to structural life assessment of ships and ocean structures, with an emphasis to those used in marine structures.
Journal ArticleDOI
Measurement of Crack Arrest Fracture Toughness of a Ship Steel Plate
LN Pussegoda,L Malik,J Morrison +2 more
TL;DR: In this paper, two types of full thickness compact crack arrest (CCA) specimens have been used to characterize the crack arrest toughness of a 15.5mm-thick ship plate steel in both the L-T and T-L orientations.
Journal ArticleDOI
Effects of plastic deformation on fracture toughness of ship plate steels
TL;DR: In this paper, four grades of ship plate with a range of as-received toughness characteristics were deformed to two levels of cold work and their toughness measured increasing the amount of cold deformation caused deterioration in toughness in two ways: an increase in the brittle to ductile transition temperature, and a drop in resistance toductile tearing.
Comparative Study of Concrete Constitutive Models for Predicting Blast Response
James W. Wesevich,David D. Bogosian,Barry L. Bingham,Johan Magnusson,Alexander P. Christiansen +4 more
TL;DR: In this paper, a rational method to design barrier systems subjected to vehicular impact loading is presented, based on the energy principle using vehicle characteristics, which covers barrier systems with stiffness ranging from rigid to both linear elastic and nonlinear systems, subjected to various vehicular speeds.
References
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Book ChapterDOI
Appendix: ASTM Standard Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels (E 208-85)
Book ChapterDOI
A Comparison of Crack-Mouth Opening and Load-Line Displacement for J-Integral Evaluation Using Bend Specimens
B Faucher,WR Tyson +1 more
Book ChapterDOI
The Development of Standard Methods for Determining the Dynamic Fracture Toughness of Metallic Materials
HJ MacGillivray,DF Cannon +1 more
Book ChapterDOI
Dynamic Crack-Tip Opening Displacement (CTOD) Measurements with Application to Fracture Toughness Testing
Journal ArticleDOI
Steel selection for Arctic ships: effects of elevated loading rate on toughness
TL;DR: In this article, the authors reviewed the steel selection standards embodied in the Canadian Arctic Shipping Pollution Prevention Regulations (CASPPR) with special regard to the strain rates expected to be encountered in service.