Three-Phase Optimal Design for Sequential Ballistic Resistance Testing
Three-Phase Optimal Design is a sequential method used in estimating the ballistic resistance of materials and systems. The goal is to generate a response curve that plots the probability of projectile penetration against the velocity at which the projectile is fired (or some other combination of factors). The first stage of this process bounds the response curve by plotting a non-penetration at a low velocity and a penetration at a high velocity. The sequential nature of the process then unfolds as subsequent shots of varying velocity are used to dial in on the velocity that results in 50% penetration. Greater detail on this process, as well as comparisons to other sequential methods in ballistic resistance testing can be found in a paper by Johnson, Freeman, Hester, & Bell (2014) - A Comparison of Ballistic Resistance Testing Techniques in the Department of Defense.
Additionally, you can use this application to draw response curves with the Three-Phase Optimal Design sequential method.
