Development and application of NDE methods for monolithic and continuous fiber ceramic matrix composites.

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Monolithic structural ceramics and continuous fiber ceramic matrix composites (CMCs) are being developed for application in many thermally and chemically aggressive environments where structural reliability is paramount. We have recently developed advanced nondestructive evaluation (NDE) methods that can detect distributed ''defects'' such as density gradients and machining-induced damage in monolithic materials, as well as delamination, porosity, and throughwall cracks, in CMC materials. These advanced NDE methods utilize (a) high-resolution, high-sensitivity thermal imaging; (b) high-resolution X-ray imaging; (c) laser-based elastic optical scattering; (d) acoustic resonance; (e) air-coupled ultrasonic methods; and (f) high-sensitivity fluorescent penetrant technology. This paper discusses the development and ... continued below

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15 p.

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Ellingson, W. A. May 21, 1999.

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Description

Monolithic structural ceramics and continuous fiber ceramic matrix composites (CMCs) are being developed for application in many thermally and chemically aggressive environments where structural reliability is paramount. We have recently developed advanced nondestructive evaluation (NDE) methods that can detect distributed ''defects'' such as density gradients and machining-induced damage in monolithic materials, as well as delamination, porosity, and throughwall cracks, in CMC materials. These advanced NDE methods utilize (a) high-resolution, high-sensitivity thermal imaging; (b) high-resolution X-ray imaging; (c) laser-based elastic optical scattering; (d) acoustic resonance; (e) air-coupled ultrasonic methods; and (f) high-sensitivity fluorescent penetrant technology. This paper discusses the development and application of these NDE methods relative to ceramic processing and ceramic components used in large-scale industrial gas turbines and hot gas filters for gas stream particulate cleanup.

Physical Description

15 p.

Notes

OSTI as DE00010584

Medium: P; Size: 15 pages

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  • 9th International Conference on Modern Materials and Technologies/World Ceramics Congress, Florence (IT), 06/14/1998--06/19/1998

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  • Report No.: ANL/ET/CP-95453
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10584
  • Archival Resource Key: ark:/67531/metadc623691

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  • May 21, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 7, 2017, 2:57 p.m.

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Ellingson, W. A. Development and application of NDE methods for monolithic and continuous fiber ceramic matrix composites., article, May 21, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc623691/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.