Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2006-10-17
2006-10-17
Porta, David (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
C250S341100, C250S342000, C250S330000
Reexamination Certificate
active
07122801
ABSTRACT:
A defect detection system for thermally imaging a structure that has been energized by sound energy. The system includes a transducer that couples a sound signal into the structure, where the sound signal causes defects in the structure to heat up. In one embodiment, a hard metal disk is positioned between the transducer and the structure to help couple the sound energy from the transducer into the structure. A predetermined force is applied to the transducer and a pulse duration and a pulse frequency of the sound signal are selected so that the sound energy induces acoustic chaos in the structure, thus generating increased thermal energy. A thermal imaging camera images the structure when it is heated by the sound signal.
REFERENCES:
patent: 6232701 (2001-05-01), Schuh et al.
patent: 6236049 (2001-05-01), Thomas et al.
patent: 6274967 (2001-08-01), Zumstrull et al.
patent: 6399948 (2002-06-01), Thomas et al.
patent: 6437334 (2002-08-01), Thomas et al.
patent: 6593574 (2003-07-01), Thomas et al.
patent: 6838670 (2005-01-01), Lewis et al.
patent: 6877894 (2005-04-01), Vona et al.
patent: 6998616 (2006-02-01), Favro et al.
patent: 2002/0121602 (2002-09-01), Thomas et al.
patent: 4203272 (1993-08-01), None
patent: 100 59 854 4 (2002-06-01), None
patent: WO 01/53821 (2001-07-01), None
Han et al.; “Acoustic Chaos and Sonic Infrared Imaging;” American Institute of Physics; vol. 81, No. 17; Oct. 21, 2002; USA.
Yu Solodov et al.; “CAN: an example of nonclassical acoustic nonlinearity in solids;” Elsevier Science B.V.; Ultrasonics 40 (2002) 621-625; Moscow, Russia.
B.A. Korshak et al.; “DC effects, sub-harmonics, stoichasticity and ‘memory’ for contact acoustic non-linearity;” Elsevier Science B.V.; Ultrasonics 40 (2002) 707-713; Moscow, Russia.
Yu Solodov et al.; “Instability, Chaos, and ‘Memory’ in Acoustic-Wave-Crack Interaction;” The American Physical Society; Physical Review Letters vol. 88, No. 1; Dec. 19, 2001; Moscow, Russia.
N. Krohn et al.; “Nonlinear Vibrometry for Quality Assurance;” American Institute of Physics; Review of Progress in Quantitative Nondestructive Evaluation, vol. 20, ed. 2001; Germany.
Han et al.; “Enhancement of Sonic IR Imaging by Using Chaotic Acoustic Pulses;” Wayne State University; Detroit, Michigan.
Han et al.; “Enhancement of Sonic IR Imaging through the use of Chaotic Acoustic Pulses;” ASNT 12th Annual Research Symposium 2003; Institute for Manufacturing Research, Wayne State University.
Favro Lawrence D.
Han Xioayan
Thomas Robert L.
Boosalis Faye
Miller John A.
Porta David
Warn, Hoffmann, Miller & LaLone, P.C.
Wayne State University
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