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US 6,499,355 B1Granted
Elongation and cracking testing and optical characterization of small-size coatings and materials
AssigneeGeneral Electric Company
InventorRadislav Alexandrovich Potyrailo
Life of this patent
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Abstract
This invention relates to methods for testing elongation and cracking of coating arrays. The method includes simultaneously applying an elongating force to each of a plurality of coatings, and monitoring the cracks and thickness decrease in each coating. A relative performance characteristic of each coating is then determined based on a correlation between a detected crack and/or thickness decrease in the coating, and the corresponding elongating force.
Claims81
A method for testing coatings, comprising:
- simultaneously applying an elongation in three dimensions by bending to each of a plurality of coatings;
- monitoring for cracks in each of the plurality of coatings;
- and
- determining a relative performance characteristic of each of the plurality of coatings based on a correlation between a detected crack in the coating or a decrease in thickness of the coating, and the corresponding elongation in three dimensions by bending;
- wherein the cracks are monitored with a detection system and the detection system comprises;
- immersing the plurality of coatings in a luminophore solution;
- directing light toward each coating;
- and
- detecting luminescent light from the luminophore located in any cracks in each coating.
6 more elements
A method for testing coatings, comprising:
- applying a plurality of coatings to a plurality of substrates wherein each coating is applied to a different substrate;
- securing the substrates in a test arrangement;
- applying a force to the substrates in order to bend the coating on each substrate;
- and
- using a detection system to visualize cracks in each coating or a decrease in thickness of each coating;
- wherein the detection system comprises:
- directing light toward each coating;
- and
- detecting scattered light from any cracks in each coating.
6 more elements
A method for testing coatings comprising:
- applying at least one coating to a substrate;
- forming the substrate into at least one coil having a first diameter;
- and
- using a detection system to visualize cracks in each coating or a decrease in thickness of each coating.
1 more element
Dependencies are inferred from the claim text.