Strengthening, crack arrest and multiple cracking in brittle materials using residual stresses
Abstract
Embodiments include a method for forming a glass which displays visible cracking prior to failure when subjected to predetermined stress level that is greater than a predetermined minimum stress level and less than a failure stress level. The method includes determining a critical flaw size in the glass and introducing a residual stress profile to the glass so that a plurality of visible cracks are formed prior to failure when the glass is subjected to a stress that is greater than the minimum stress level and lower than the critical stress. One method for forming the residual stress profile includes performing a first ion exchange so that a first plurality of ions of a first element in the glass are exchanged with a second plurality of ions of a second element that have a larger volume than the first ions. A second ion exchange is also performed so that a plurality of the second ions in the glass are exchanged back to ions of the first element.
- Inventors:
- Issue Date:
- Research Org.:
- Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 879644
- Patent Number(s):
- 6,516,634
- Application Number:
- 09/502,284
- Assignee:
- The Penn State Research Foundation (University Park, PA)
- DOE Contract Number:
- FG02-86ER45252
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2000 Feb 11
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Green, David J., Sglavo, Vincenzo M., and Tandon, Rajan. Strengthening, crack arrest and multiple cracking in brittle materials using residual stresses. United States: N. p., 2003.
Web.
Green, David J., Sglavo, Vincenzo M., & Tandon, Rajan. Strengthening, crack arrest and multiple cracking in brittle materials using residual stresses. United States.
Green, David J., Sglavo, Vincenzo M., and Tandon, Rajan. Tue .
"Strengthening, crack arrest and multiple cracking in brittle materials using residual stresses". United States. https://www.osti.gov/servlets/purl/879644.
@article{osti_879644,
title = {Strengthening, crack arrest and multiple cracking in brittle materials using residual stresses},
author = {Green, David J. and Sglavo, Vincenzo M. and Tandon, Rajan},
abstractNote = {Embodiments include a method for forming a glass which displays visible cracking prior to failure when subjected to predetermined stress level that is greater than a predetermined minimum stress level and less than a failure stress level. The method includes determining a critical flaw size in the glass and introducing a residual stress profile to the glass so that a plurality of visible cracks are formed prior to failure when the glass is subjected to a stress that is greater than the minimum stress level and lower than the critical stress. One method for forming the residual stress profile includes performing a first ion exchange so that a first plurality of ions of a first element in the glass are exchanged with a second plurality of ions of a second element that have a larger volume than the first ions. A second ion exchange is also performed so that a plurality of the second ions in the glass are exchanged back to ions of the first element.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {2}
}
Works referenced in this record:
Crack Stability and T-Curves Due to Macroscopic Residual Compressive Stress Profiles
journal, August 1991
- Tandon, Rajan; Green, David J.
- Journal of the American Ceramic Society, Vol. 74, Issue 8
Residual Stress Determination Using Strain Gage Measurements
journal, September 1990
- Tandon, Rajan; Green, David J.
- Journal of the American Ceramic Society, Vol. 73, Issue 9
Crack Arrest and Multiple Cracking in Glass Through the Use of Designed Residual Stress Profiles
journal, February 1999
- Green, D. J.; Tandon, R.; Sglavo, V. M.
- Science, Vol. 283, Issue 5406, p. 1295-1297
The effect of crack growth stability induced by residual compressive stresses on strength variability
journal, March 1992
- Tandon, Rajan; Green, David J.
- Journal of Materials Research, Vol. 7, Issue 3
Determination of Residual Stress Profile Using a Strain Gage Technique
journal, July 1990
- Virkar, Anil V.
- Journal of the American Ceramic Society, Vol. 73, Issue 7
Strength variability in brittle materials with stabilizing and destabilizing resistance fields
journal, February 1993
- Tandon, R.; Green, D. J.; Cook, R. F.
- Acta Metallurgica et Materialia, Vol. 41, Issue 2