Analysis of metal matrix composite (MMC) applied armor system. (2017)

• Record Type: Journal Article
• Authors: Lee, Minhyung; Park, Sangwon; Jo, Ilguk; Lee, Sangkwan
• Is Part Of: Procedia engineering. Volume 204(2017)
• Page Start: 100
• Page End: 107
• Publication Date: 2017
• Subjects: MMC -- ballistic performance -- DOP -- armour system -- long rod; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2017.09.761
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: A combined analysis has been performed for the penetration of a long-rod into MMC/Ceramic layered armour systems with several shot test and a series of simulations. Metal Matrix Composites (MMCs) can be a potential candidate for military applications due to the light weight. The length to diameter (L/D) ratio of the penetrator is 10.6. Two types of MMC plate have been fabricated by a liquid pressing method; A356/45%vol.SiC with a uniform distribution of SiC particle and Al7075/45%vol.B4Cp with B4C particle. The mechanical properties were measured with the high-speed split Hopkinson bar test, hardness test and compression test. The popular Simplified Johnson-Cook model was adopted to represent the material characteristics for FEM simulations. Based on the depth of penetration (DOP) by simulation and high-speed shot test, the performance evaluation of the MMC applied armour system has been made by comparing with the conventional semi-infinite mild steel target. The results show that placing ceramic front layer provides a certain gain in protection, and that placing another ductile front layer provides a further gain. The application of MMC is found to be attractive. Whether SiC or B4C is best deserves more delicate shot tests.