Maryland's Defense Patent Database

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Color switchable stress-fracture sensor for damage control

Patent image
NSWCCD

A color switchable stress/fracture sensor in combination with a structure. The combination apparatus includes a structure requiring stress and/or fracture detection, and at least one elasto-mechanoluminescent material at least partially dispersed in and/or on the structure and/or in a coating on the structure. The combination apparatus further includes at least one fracto-mechanoluminescent material at least partially dispersed in and/or on the structure and/or in a coating on the structure, and at least one fiber optic cable positioned to receive and transmit sufficient light emitted from the elasto-mechanoluminescent material due to stress applied to the elasto-mechanoluminescent material and to receive and transmit sufficient light emitted from the fracto-mechanoluminescent material due to fracture of the fracto-mechanoluminescent material.

Inventors: 
Mathur, Veerendra K.; Price, Jack L.
Patent Number: 
Technical domain: 
Sensors and Measurement
FIle Date: 
2004-08-13
Grant Date: 
2007-12-11
Grant time: 
1,215 days
Grant time percentile rank: 
22
Claim count percentile rank: 
1
Citations percentile rank: 
2
'Cited by' percentile rank: 
1
Assignee: 
US NAVY