New Electronic Peening Intensity Sensor: Effect of Impingement Angle

In this paper, the previously presented theoretical equations governing the utilization of a new sensor to measures peening intensity will be expanded to include the effect of impingement angle. The equations are derived from the Impulse–Momentum principle and use the input velocity, the coefficient of restitution, the media particle mass and the impact impulse time to determine the maximum impact force at any angle. The equations are verified with results from experimental testing at impingement angles of 85°, 65°, 55°, 45° and 35° at five different input velocities using AWCR28 media propelled from a Shockform designed single particle cannon. Results show that for all angles, the sensor output offers a good linear correlation with the input velocity. The sensor can be used to assess the quality of the particle stream when peening at different angles and with different media flow rates. Examples of sensor output graphs will be presented showing how collisions between incoming and outgoing media particles can affect the distribution of impacts on a part.