Daimlerchrysler Corporation

Chrysler Group LLC

Chrysler Corporation

Serguei A Titov

Roman Gr Maev

Elena Yu Maeva

Fedar M Seviaryn

Frank J Ewasyshyn

John M Paille

Alexey A Denisov

Hsu-Tung Lee

Konstantin Masolv

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.

Method and apparatus for assessing the quality of spot welds

A system and method for assessing the quality of spot weld joints between pieces of metal includes an ultrasound transducer probing a spot weld joint. The ultrasound transducer transmits ultrasonic radiation into the spot weld joint, receives corresponding echoes, and transforms the echoes into electrical signals. An image reconstructor connected to the ultrasound transducer transforms the electrical signals into numerical data representing an ultrasound image. A neural network connected to the image reconstructor analyzes the numerical data and an output system presents information representing the quality of the spot weld joint. The system is trained to assess the quality of spot weld joints by scanning a spot weld joint with an ultrasound transducer to produce the data set representing the joint; then physically deconstructing the joint to assess the joint quality.

Method and system for assessing quality of spot welds

The present invention provides an acoustical microscope which has a plurality of acoustical transducers, each generating an independent beam of acoustic energy. Each acoustical transducer is positioned in an adjacent relationship with the others such that each beam of acoustic energy intersects a different point on a target.

Multieyed acoustical microscopic lens system

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Moscow, Russia

Serguei A Titov