A new data processing technique for measured penetration overloads

This paper studied the analysis and processing method for the measured penetration deceleration data, proposed a new method which combining the modal analysis of the test projectile and test equipment with spectrum analysis of the measured data, and obtained corresponding penetration deceleration of the rigid body by selecting low pass cutoff frequency to filter the measured data. The obtained penetration deceleration of the rigid body determined from the measured data by the method presented in this paper shows a good agreement with the calculated results by the cylindrical cavity expansion theory,and the projectile penetration velocity and displacement obtained from integrating the penetration deceleration of the rigid body after filtering also shows a good agreement with the measured results.