Recent indications of a direct proportionality between plane strain fracture toughness KIc and the strain hardening exponent n provide a new basis for comparing the initiation with the propagation of a crack. A mild steel from the University of Illinois wide plate studies was employed because of its extensive crack propagation data. With this, the proportionality KIc/n was established at low temperatures. The n values were then measured at service temperatures and also at extremely high strain rates, to 6000/sec, with bar impact loaders. The additional speed range delineates a series of minimum fracture toughness levels even at temperatures above the NDT or CV15. A plot of adiabatic minima KIc(Q) as pertinent to the crack arrest temperature and isothermal KIc(T) to crack initiation permits a more quantitative interpretation of the Pellini fracture diagram.
A Comparison of the Initiation With the Rapid Propagation of a Crack in a Mild Steel Plate
School of Engineering, George Washington University, Washington, D. C.
J. M. Krafft
Mechanics Division, U. S. Naval Research Lab., Washington, D. C.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Eftis, J., and Krafft, J. M. (March 1, 1965). "A Comparison of the Initiation With the Rapid Propagation of a Crack in a Mild Steel Plate." ASME. J. Basic Eng. March 1965; 87(1): 257–263. https://doi.org/10.1115/1.3650520
Download citation file:
- Ris (Zotero)
- Reference Manager
Get Email Alerts
Numerical Investigations of Gas–Liquid Two-Phase Flow in a Pump Inducer
J. Fluids Eng (February 2020)
A Coupled Overset Mesh and Hybridizable Discontinuous Galerkin Algorithm for Pseudo-Compressible Flow
J. Fluids Eng (January 2020)