On-line safety monitoring of a large high pressure high temperature autoclave

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Four years of experience with on-line monitoring of a large autoclave used primarily for forming bonds and material densification is reported. The purpose of this work is to confirm that no flaws are growing in the autoclave during operation. Failure of this device during operation could endanger personnel and would damage property. Its loss would seriously curtail several ongoing research efforts. The vessel is monitored with a commercial minicomputerized flaw location system. Four 4-sensor arrays are attached to the exterior of the device to receive acoustic emission signals. Computed locations are stored on cassette tape and selected portions can be ... continued below

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Pages: 49

Creation Information

Tatro, C.A.; Brown, A.E.; Freeman, T.H. & Yanes, G. January 18, 1979.

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Description

Four years of experience with on-line monitoring of a large autoclave used primarily for forming bonds and material densification is reported. The purpose of this work is to confirm that no flaws are growing in the autoclave during operation. Failure of this device during operation could endanger personnel and would damage property. Its loss would seriously curtail several ongoing research efforts. The vessel is monitored with a commercial minicomputerized flaw location system. Four 4-sensor arrays are attached to the exterior of the device to receive acoustic emission signals. Computed locations are stored on cassette tape and selected portions can be displayed on a cathode ray screen. It is shown that although the minicomputer is implemented with two dimensional location software, the information can be reprocessed in a central computer to produce locations in three dimensions. Long term storage of data, data display, noise analysis, calibration, and computerized location error analysis is discussed. No degradation by flaw growth has been detected in the device to date. This is the expected result, since it has an estimated 30-y life.

Physical Description

Pages: 49

Notes

Dep. NTIS, PC A03/MF A01.

Source

  • ASTM symposium on acoustic emission monitoring of pressurized systems, Ft Lauderdale, FL, USA, 22 Jan 1979

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  • Report No.: UCRL-81044
  • Report No.: CONF-790128-2
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 6387473
  • Archival Resource Key: ark:/67531/metadc1205616

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 18, 1979

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Oct. 23, 2018, 12:03 p.m.

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Tatro, C.A.; Brown, A.E.; Freeman, T.H. & Yanes, G. On-line safety monitoring of a large high pressure high temperature autoclave, article, January 18, 1979; United States. (digital.library.unt.edu/ark:/67531/metadc1205616/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.