Development of nondestructive evaluation methods for structural ceramics

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Nondestructive evaluation (NDE) methods using three-dimensional microfocus X-ray computed tomographic imaging (3DXCT) were employed to map axial and radial density variations in hot-gas filters and heat exchanger tubes. 3D XCT analysis was conducted on (a) two 38-mm-OD, 6.5-mm wall, SiC/SiC heat exchanger tubes infiltrated by CVI; (b) eight 10 cm diam. oxide/oxide heat exchanger tubes; and (c) one 26-cm-long Nextel fiber/SiC matrix hot-gas filter. The results show that radial and axial density uniformity as well as porosity, can be assessed by 3D XCT. NDE methods are also under development to assess thermal barrier coatings which are under development as methods ... continued below

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12 p.

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Ellingson, W.A.; Koehl, R.D.; Wilson, J.A.; Stuckey, J.B. & Engel, H.P. April 1, 1996.

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Description

Nondestructive evaluation (NDE) methods using three-dimensional microfocus X-ray computed tomographic imaging (3DXCT) were employed to map axial and radial density variations in hot-gas filters and heat exchanger tubes. 3D XCT analysis was conducted on (a) two 38-mm-OD, 6.5-mm wall, SiC/SiC heat exchanger tubes infiltrated by CVI; (b) eight 10 cm diam. oxide/oxide heat exchanger tubes; and (c) one 26-cm-long Nextel fiber/SiC matrix hot-gas filter. The results show that radial and axial density uniformity as well as porosity, can be assessed by 3D XCT. NDE methods are also under development to assess thermal barrier coatings which are under development as methods to protect gas-turbine first-stage hot section metallic substrates. Further, because both shop and field joining of CFCC materials will be necessary, work is now beginning on development of NDE methods for joining.

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12 p.

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OSTI as DE96011124

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  • 10. annual conference on fossil energy materials, Knoxville, TN (United States), 14-16 May 1996

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  • Other: DE96011124
  • Report No.: ANL/ET/CP--89900
  • Report No.: CONF-9605167--4
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 244676
  • Archival Resource Key: ark:/67531/metadc670127

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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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  • April 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 15, 2015, 6:53 p.m.

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Ellingson, W.A.; Koehl, R.D.; Wilson, J.A.; Stuckey, J.B. & Engel, H.P. Development of nondestructive evaluation methods for structural ceramics, article, April 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc670127/: accessed November 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.