A kind of portable resistor spot welding Automatic ultrasonic testing instrument and detection method

A kind of portable resistor spot welding Automatic ultrasonic testing instrument, it is made up of industrial computer, ultrasonic probe, the ultrasound examination module be integrated in industrial computer, compact two-dimentional machinery scanning motion module and ultrasonic analysis module.Described ultrasound examination module comprises ultrasonic pulse radiating circuit, ultrasound wave receiving circuit and A/D analog to digital conversion circuit; Described compact two-dimentional machinery scanning motion module comprises miniature linear, driver, motion control card and self-adaptation conformal device.Described ultrasonic analysis module comprises data and image processing module, database storage module and artificial recovering and analysis module.Present invention achieves the functions such as ultrasonic probe generates joint for resistance spot welding surface self-adaptive Scanning Detction and real time signal aquisition, C scan image automatically when non-water logging, the quantitative calculating of nugget size, compared with prior art, the present invention have simple to operate, portable reliable, antijamming capability strong, detect the advantages such as analysis speed is fast.