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:
-
- (State College, PA)
- (Roncegno, IT)
- (Fremont, CA)
- Issue Date:
- Research Org.:
- Pennsylvania State Univ., University Park, PA (United States)
- OSTI Identifier:
- 879644
- Patent Number(s):
- 6516634
- Application Number:
- 09/502284
- Assignee:
- The Penn State Research Foundation (University Park, PA) CHO
- DOE Contract Number:
- FG02-86ER45252
- Resource Type:
- Patent
- 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}
}