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:
Mar. 29, 2016
Filed:
Jun. 10, 2013
Roman GR Maev, Windsor, CA;
Andriy M Chertov, Windsor, CA;
John M Paille, Rochester Hills, MI (US);
Frank J Ewasyshyn, Rochester, MI (US);
Roman Gr Maev, Windsor, CA;
Andriy M Chertov, Windsor, CA;
John M Paille, Rochester Hills, MI (US);
Frank J Ewasyshyn, Rochester, MI (US);
Tessonics Corporation, Birmingham, MI (US);
Abstract
A method and apparatus for ultrasonic in-process monitoring and feedback of resistance spot weld quality uses at least one transducer located in the electrode assembly transmitting through a weld tip into an underway weld. Analysis of the spectrum of ultrasonic waves provides the operator with an indication of the size, thickness, location, dynamics of formation and quality of the spot weld. The method presents a fundamentally new physical approach to the characterization of the spot weld quality. Together with transmission mode it includes new modes of operation of ultrasonic probes such as a reflection mode and simultaneous use of transmission and reflection modes, and a new physical interpretation of the signal analysis results.