Stable and unstable crack growth in pressure vessel models. [10 in. dia]

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Three identical steel pressure vessels with 254-mm (10-in.) dia, 38-mm (1.5-in.) wall thicknesses and long, deep machined and sharpened axially oriented flaws were tested at three different temperatures. The vessels were assembled by electron-beam welding cylindrical sections with substantially different toughnesses due to different heat treatments. Crack extension initiated in relatively brittle sections, and the cracks extended both stably and unstably, depending on test temperature, toward the tougher sections where crack arrest did and did not occur. Charpy impact specimens and both slow-bend and dynamic precracked Charpy specimens were used for material characterization. The behavior of the vessels is described ... continued below

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Pages: 24

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Smith, G.C.; Canonico, D.A. & Stelzman, W.J. January 1, 1978.

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Description

Three identical steel pressure vessels with 254-mm (10-in.) dia, 38-mm (1.5-in.) wall thicknesses and long, deep machined and sharpened axially oriented flaws were tested at three different temperatures. The vessels were assembled by electron-beam welding cylindrical sections with substantially different toughnesses due to different heat treatments. Crack extension initiated in relatively brittle sections, and the cracks extended both stably and unstably, depending on test temperature, toward the tougher sections where crack arrest did and did not occur. Charpy impact specimens and both slow-bend and dynamic precracked Charpy specimens were used for material characterization. The behavior of the vessels is described and related to the Charpy data.

Physical Description

Pages: 24

Notes

Dep. NTIS, PC A02/MF A01.

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  • 107. AIME meeting, Denver, CO, USA, 26 Feb 1978

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  • Report No.: CONF-780213-3
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5148950
  • Archival Resource Key: ark:/67531/metadc1052509

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • January 1, 1978

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 6:14 p.m.

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Smith, G.C.; Canonico, D.A. & Stelzman, W.J. Stable and unstable crack growth in pressure vessel models. [10 in. dia], article, January 1, 1978; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1052509/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.