Sentenso: Analysis of grain velocities during shot peening

In shot peening, the impact speed and the impact angle are the determining process parameters for the shot peening intensity in addition to the properties of the blasting medium. Using Sentenso's VelocityEasy software and a measurement setup consisting of a high-speed camera with a network connection and a high-intensity lighting unit, the fast-flying shot particles can be viewed in incident or back light and their trajectories analyzed. The analysis of the high-speed images includes Histogram of the velocity distribution, histogram of the beam angle distribution of the individual grains, diagram of the velocity over the measurement time and diagram of the velocity over the beam angle. The measurement data of all detected individual particles is output in a log file.

VelocityEasy automatically communicates with the high-speed camera and reads out the camera settings. The intuitive user interface allows parameterization of the evaluation algorithm and program control. Video recording, tracking of the detected individual particles, particle marking on the image sequence, evaluation of the images and the display of all measurement results in the form of values and diagrams are all performed automatically. VelocityEasy also offers extensive additional functions for checking and managing measurement data. These include the integrated video player with operating function for single image analysis, the loading function for existing videos and measurement data sets and the debug output with detailed measurement information. The additional functions allow a detailed plausibility check of the results and the subsequent evaluation of existing recordings. VelocityEasy is installed on a Windows PC provided by the customer and is ideally prepared for connection to a blasting system controller. Via the integrated TCP interface, an external system controller can start the software remotely in the preset parameterization and retrieve measurement results. The measurement results can then be further processed within the control system, e.g. to check compliance with a target speed. Customized calibration videos can be generated to calibrate the software. On request, Sentenso can also supply the associated speed measurement system with a cost-effective high-speed camera and a measurement channel with lighting unit as a complete solution from a single source.