Evaluations of the Irwin. beta. /sub Ic/ adjustment for small specimen fracture toughness data [electronic resource].
- Published
- Oak Ridge, Tenn. : Oak Ridge National Laboratory, 1983.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- Pages: 19 : digital, PDF file
- Additional Creators
- Oak Ridge National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- When small specimens are used to measure the cleavage fracture toughness of pressure vessel steels in the transition range of temperature, specimen thickness size effects and large amounts of data scatter are often observed. The size effects are manifested by an increase in the average value of fracture toughness with decreasing specimen thickness, eventually resulting in a change in fracture mode from cleavage to ductile tearing. It has been shown that a semiempirical adjustment for the interacting effects of specimen thickness, yield stress and toughness originally proposed by Irwin is capable of reducing the calculated values of toughness and data scatter to levels consistent with large specimen test data. This is true for dynamic as well as for static initiation toughness values. The nature of the size effect described by the Irwin ..beta../sub Ic/ equation is illustrated and specific cases are shown in which ..beta../sub Ic/ adjustment has eliminated size effects, for both static and dynamic fracture toughness data.
- Report Numbers
- E 1.99:conf-8310143-57
conf-8310143-57 - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
01/01/1983.
"conf-8310143-57"
"DE84003292"
11. NRC water reactor safety research information meeting, Gaithersburg, MD, USA, 14 Oct 1983.
Merkle, J.G. - Funding Information
- W-7405-ENG-26
View MARC record | catkey: 14366784