The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2002
Filed:
Sep. 15, 2000
Robert L. Thomas, Huntington Woods, MI (US);
Lawrence D. Favro, Huntington Woods, MI (US);
Xiaoyan Han, Plymouth, MI (US);
Zhong Ouyang, Detroit, MI (US);
Hua Sui, Detroit, MI (US);
Gang Sun, Dearborn Heights, MI (US);
Paul John Zombo, Cocoa, FL (US);
Robert Edward Shannon, Export, PA (US);
Wayne State University, Detroit, MI (US);
Abstract
A thermal imaging system for detecting cracks and defects in a component. An electromagnetic acoustic transducer (EMAT) is coupled to the component, and introduces pulsed sound signals therein. The sound signals cause the defects to heat up. The IR radiation from the heated pulses is detected by a thermal camera. The amplitude of the pulsed signals are substantially constant, and the frequency of the pulsed signal can be changed within each pulse. A control unit is employed to provide timing and control for the operation of the EMAT and the camera.