Integration of wide-plate crack-arrest test results
The primary objective of the crack-arrest studies under the Heavy-Section Steel Technology (HSST) Program is to generate data for understanding the crack-arrest behavior of prototypical pressure vessel steels at temperatures near and above the onset of the Charpy uppershelf region. Specific program goals are to: (1) extend existing K/sub Ia/ data bases to temperatures beyond those associated with the upper limit in the ASME BandPVC; (2) clearly establish that crack-arrest occurs prior to fracture-mode conversion; (3) observe the relationship between arrest data and machine/specimen compliance behavior; and (4) validate the predictability of crack arrest, stable tearing, and/or unstable tearing sequences for ductile materials. In meeting these goals, the HSST program is generating crack-arrest data over an expanded temperature range through tests involving large thermally-shocked cylinders, pressurized-thermally-shocked vessels and wide-plate specimens. This presentation will focus on data from the wide-plate specimens which have the advantage that a more significant number of data points can be obtained at affordable costs.
- Research Organization:
- Oak Ridge National Lab., TN (USA). Engineering Technology Div.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5154911
- Report Number(s):
- CONF-8610135-2; ON: TI87000289
- Country of Publication:
- United States
- Language:
- English
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