Detecting thermal waves to evaluate thermal parameters

Details Detecting thermal waves to evaluate thermal parameters Detecting thermal waves to evaluate thermal parameters

1984-05-21

1986-04-01

Yasich, Daniel M.

Thermal measuring and testing

Thermal testing of a nonthermal quantity

Of susceptibility to thermally induced deteriouration, flaw,...

356445, 374 17, 374130, 374 5, G01N 2141, G01N 2500

Patent

active

045794634

ABSTRACT:
A method and apparatus is disclosed for detecting thermal waves. This system is based on the measurement of the change in reflectivity at the sample surface which is a function of the changing surface temperature. The apparatus includes a radiation probe beam that is directed on a portion of the area which is being periodically heated. A photodetector is aligned to sense the intensity changes in the reflected radiation probe beam which results from the periodic heating. These signals are processed to detect the presence of thermal waves.

REFERENCES:
patent: 3462602 (1969-08-01), Apple
patent: 3930730 (1976-01-01), Laurens et al.
patent: 4243327 (1981-01-01), Frosch et al.
patent: 4255971 (1981-03-01), Rosencwaig
patent: 4283147 (1981-08-01), Dreyfus et al.
patent: 4284356 (1981-08-01), Heilman
patent: 4466748 (1984-08-01), Needham
patent: 4468136 (1984-08-01), Murphy et al.
patent: 4513384 (1985-04-01), Rosencwaig
patent: 4521118 (1985-06-01), Rosencwaig
patent: 4522510 (1985-06-01), Rosencwaig et al.
"Non-Destructive Interferometric Detection of Unbonded Layers", by P. Cielo, pp. 231-248, Reprint of Optics & Lasers in Engineering.

Affiliated with

Also associated with

Rating

Detecting thermal waves to evaluate thermal parameters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detecting thermal waves to evaluate thermal parameters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting thermal waves to evaluate thermal parameters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1082127