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US 10,460,432 B2Granted
Digital image correlation pattern application with aspirated ink
AssigneeThe Boeing Company
InventorAntonio L. Boscia
Life of this patent
Estimating the term…
Abstract
A system for strain testing employs an ink aspiration system adapted to apply a stochastic ink pattern. The stochastic pattern is applied to a test article and a test fixture receives the test article. A digital image correlation (DIC) imaging and calculation system is positioned relative to the test article to image the stochastic ink pattern.
Claims18
A method for strain testing comprising:
- creating a stochastic pattern with ink from a permanent marker having a porous tip by supplying aspirating gas through an orifice in a conduit positioned adjacent the porous tip to spray the ink on an article to be tested;
- performing a strain test on the article inducing a strain in the article with a resulting change in the stochastic pattern of the ink;
- and,
- measuring the strain using a digital image correlation (DIC) imaging and calculation system viewing the stochastic pattern.
1 more element
A system for strain testing comprising:
- an ink aspiration system adapted to apply a stochastic ink pattern, said ink aspiration system having
- a loop receiving a writing instrument;
- and,
- an aspirating gas supply conduit supported with respect to the loop to position an orifice proximate a tip of the writing instrument to entrain ink in aspirating gas flowing through the orifice;
- a test article on which the stochastic ink pattern is applied;
- a test fixture receiving the test article;
- and,
- a digital image correlation (DIC) imaging and calculation system positioned relative to the test article to image the stochastic ink pattern.
5 more elements
A method for strain testing comprising:
- creating a stochastic pattern by aspirating ink from a permanent marker having a porous tip with a gas flow adjacent the tip to spray the ink on an article to be tested;
- performing a strain test on the article inducing a strain in the article with a resulting change in the stochastic pattern of the ink;
- and,
- measuring the strain using a digital image correlation (DIC) imaging and calculation system viewing the stochastic pattern.
1 more element
Dependencies are inferred from the claim text.