Ultrasonic impact strengthening track interference behavior testing device and testing method

The invention provides an ultrasonic impact strengthening track interference behavior testing device and testing method, and relates to the technical field of ultrasonic surface strengthening. Comprising an objective table, an XYZ axis motion control module and a workpiece rotary motion module are arranged on the objective table, and the workpiece rotary motion module is suitable for clamping a workpiece and driving the workpiece to rotate; the XYZ-axis motion control module is connected with an ultrasonic impact strengthening execution module, the extending end of the air cylinder is connected with the ultrasonic transducer, and the ultrasonic transducer is connected with the amplitude-change pole so as to convert input electric power into mechanical power and act on the amplitude-change pole; the tail end of the amplitude-change pole is connected with a rolling head; a dynamometer is arranged between the ultrasonic transducer and the amplitude-change pole to detect static pressure acting on the workpiece in