Using Designed Residual Stress Profiles to Produce Flaw-Tolerant Glass

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Description

A processing approach has been identified and reduced to practice in which a residual stress profile can be designed such that cracks in a brittle material are arrested or grow in a stable fashion. In the procedure, cracks in the body encounter an increase in the magnitude of residual compression as the crack propagates. If correctly designed, the process increases strength, significantly decreases strength variability and gives rise to multiple cracking. This approach is demonstrated for an ion-exchanged silicate glass using four-point and biaxial flexure strength testing. Optical microscopy was used to study the morphology and development of the multiple ... continued below

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8 p.

Creation Information

BEAUCHAMP, E.K.; GLASS, S. JILL; GREEN, D.J. & SGLAVO, M. September 2, 1999.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

A processing approach has been identified and reduced to practice in which a residual stress profile can be designed such that cracks in a brittle material are arrested or grow in a stable fashion. In the procedure, cracks in the body encounter an increase in the magnitude of residual compression as the crack propagates. If correctly designed, the process increases strength, significantly decreases strength variability and gives rise to multiple cracking. This approach is demonstrated for an ion-exchanged silicate glass using four-point and biaxial flexure strength testing. Optical microscopy was used to study the morphology and development of the multiple cracking that precedes the final failure.

Physical Description

8 p.

Notes

OSTI as DE00012714

Medium: P; Size: 8 pages

Source

  • Fracture Mechanics of Ceramics Conference, Moscow (RU), 07/20/1999--07/22/1999

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  • Report No.: SAND99-0303C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 12714
  • Archival Resource Key: ark:/67531/metadc623805

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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

  • September 2, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 11, 2017, 7:08 p.m.

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BEAUCHAMP, E.K.; GLASS, S. JILL; GREEN, D.J. & SGLAVO, M. Using Designed Residual Stress Profiles to Produce Flaw-Tolerant Glass, article, September 2, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc623805/: accessed August 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.