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:
Aug. 17, 2010
Filed:
Jun. 14, 2005
Roman Gr. Maev, Windsor, CA;
Frank J Ewasyshyn, Rochester, MI (US);
Serguei a Titov, Moscow, RU;
John M Paille, Addison Township, MI (US);
Elena Yu Maeva, Windsor, CA;
Alexey a Denisov, Windsor, CA;
Fedar M Seviaryn, Windsor, CA;
Roman Gr. Maev, Windsor, CA;
Frank J Ewasyshyn, Rochester, MI (US);
Serguei A Titov, Moscow, RU;
John M Paille, Addison Township, MI (US);
Elena Yu Maeva, Windsor, CA;
Alexey A Denisov, Windsor, CA;
Fedar M Seviaryn, Windsor, CA;
Chrysler Group LLC, Auburn Hills, MI (US);
Abstract
A method and apparatus for evaluating the size and/or quality of a spot weld. The apparatus includes a two-dimensional array of ultrasonic transducers arranged with a delay line for positioning adjacent a surface of a weld. A layer of gel is placed between the delay line and the weld surface. The array of transducers emit ultrasonic waves that pass into the weld. The reflected waves are received by the transducers and relayed to a central processing unit that analyzes the time delay, amplitude, and amplitude attenuation to calculate the border of the weld nugget, the thickness of the welded material, the thickness of the gel layer, and other factors contributing to weld quality.