Effect of interior surface finish on the break-up of commercial shaped charge211 liners

摘要

A series of experiments aimed at understanding the influence of the liner211u001einterior surface finish on the break-up of shaped charge jets has been completed. 211u001eThe experiments used a standard 81-mm shaped charge design, loaded with LX-14 211u001ehigh explosive; incorporating high-precision copper shaped charged liners. The 211u001eresults indicate that a significant reduction of jet break-up time occurs between 211u001ea surface finish of 99.30 microinches and 375.65 microinches. Surface finishes of 211u001e4.78, 44.54 and 99.30 microinches produced significantly better ductility and 211u001eassociated break-up times than the 375.65-microinch finish. The baseline 211u001eproduction process high-precision liners were measured to have an average surface 211u001efinish of 44.54 microinches. The results show that for the shaped charge warhead 211u001egeometry and explosive combination investigated, some care must be taken in 211u001erespect to surface finish, but that very fine surface finishes do not 211u001esignificantly improve the jet ductility and associated break-up times.