Observations of the severity of notch-root radius in initiation of subcritical crack growth

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Slow bend tests were conducted on Charpy specimens containing precracks or machined notches of 0.10 or 0.25 mm radius. The test specimens were fabricated from three heats of annealed Type 304 stainless steel. The purpose of these tests was to examine the effects of notch root radius, in very ductile materials, on initiation of subcritical crack growth. In addition, it was intended to establish the critical values of J, COD, etc. for the single-edge notch specimen for comparison with results obtained from specimens containing surface flaws. This paper will briefly describe only those results of the calculation for J. The ... continued below

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Pages: 20

Creation Information

Reuter, W.G.; Eiholzer, C.R. & Tupper, M.A. January 1, 1981.

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  • EG & G Idaho
    Publisher Info: EG and G Idaho, Inc., Idaho Falls (USA)
    Place of Publication: Idaho Falls, Idaho

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Description

Slow bend tests were conducted on Charpy specimens containing precracks or machined notches of 0.10 or 0.25 mm radius. The test specimens were fabricated from three heats of annealed Type 304 stainless steel. The purpose of these tests was to examine the effects of notch root radius, in very ductile materials, on initiation of subcritical crack growth. In addition, it was intended to establish the critical values of J, COD, etc. for the single-edge notch specimen for comparison with results obtained from specimens containing surface flaws. This paper will briefly describe only those results of the calculation for J. The tests were monitored by acoustic emission to identify the load corresponding to initiation of subcritical crack growth, by a crack-opening displacement gage (COD), by cross-head displacement, and by stop-action photography.

Physical Description

Pages: 20

Notes

NTIS, PC A02/MF A01.

Source

  • 6. international conference on structural mechanics in reactor technology, Paris, France, 17 Aug 1981

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  • Other: DE82005954
  • Report No.: CONF-810801-58
  • Grant Number: AC07-76ID01570
  • Office of Scientific & Technical Information Report Number: 5554847
  • Archival Resource Key: ark:/67531/metadc1092835

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • January 1, 1981

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • June 1, 2018, 5:56 p.m.

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Reuter, W.G.; Eiholzer, C.R. & Tupper, M.A. Observations of the severity of notch-root radius in initiation of subcritical crack growth, article, January 1, 1981; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc1092835/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.