Claims
- 1. A device for non-contact evaluation of stress in a substrate, the device comprising:
a hollow cylindrical window support operable to support the substrate; a source of fluorescence producing energy operable to direct the fluorescence producing energy at the substrate; a heat source operable to subject the substrate to elevated temperature; a mechanical loading assembly operable to subject the substrate to a mechanical load; and a sensor operable to detect fluorescence emitted from the substrate.
- 2. The device according to claim 1, wherein the mechanical loading assembly comprises a substrate contacting surface.
- 3. The device according to claim 1, wherein the mechanical loading assembly comprises a shaped force application member operable to contact a surface of the substrate.
- 4. The device according to claim 1, wherein the device applies tensile and compressive forces to the substrate.
- 5. The device according to claim 1, wherein the supporting cylinder has a circular cross-section having a diameter small than a smaller of a length and a width of the substrate.
- 6. The device according to claim 5, wherein the load assembly applies the mechanical load to the substrate centered with respect to the cylinder.
- 7. The device according to claim 1, further comprising:
a cooling assembly for cooling at least the source of fluorescence producing energy and the sensor.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a divisional application of application Ser. No. 10/151,629, filed May 20, 2002, which claims the benefit of U.S. provisional application No. 60/292,254, filed on May 18, 2001, each of which is hereby incorporated by reference in its entirety.
STATEMENT OF GOVERNMENTAL INTEREST
[0002] This invention was made with Government support under Naval Sea Systems Command contract no. N00024-98-D-8124, Arlington, Va. The Government has certain rights in the invention.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60292254 |
May 2001 |
US |
Divisions (1)
|
Number |
Date |
Country |
Parent |
10151629 |
May 2002 |
US |
Child |
10847044 |
May 2004 |
US |