TY - JOUR N2 - In the presented work, the author describes a new diagnostic method of ballistic resistance of multi– layered shields. The proper ballistic energy absorbed by the shield is introduced in the form V2BL[R] according to Recht’s and Ipson’s method, and V2BL[Z] according to author’s method. The kinetic energy of the bullet mp · V2p/2 and the momentum of force I are transferred to the shield and the dynamometer of ballistic pendulum. They are used to determine the proper energy V2BL[Z] and ballistic thickness hBL of the shield. The procedure can be widened onto the absorption of the energy by individual layers of the shield, where: AHnan,bn – the effect of n – interlayer on proper energy absorbed by the shield. The effectiveness of the used methods is expressed by average effectiveness coefficient βs of proper energy absorbed by the shield V2BL as well as by average mass coefficients α2s . The ballistic shields can be composed of different grades of metal layers and interlayer areas with well-chosen ballistic proprieties. The maximization of interlayer effectiveness Nn[R] and Nn[Z] as well as relative mass effectiveness Ms[R] and Ms[Z] leads to optimum conditions of selection of multi–layered shields structures. L1 - http://www.journals.pan.pl/Content/114912/PDF/AME_2007_131555.pdf L2 - http://www.journals.pan.pl/Content/114912 PY - 2007 IS - No 3 EP - 218 DO - 10.24425/ame.2007.131555 KW - absorbed energy KW - ballistic resistance KW - relative mass effectiveness KW - interlayer effectiveness KW - multi-layered shields A1 - Zatorski, Zdzisław PB - Polish Academy of Sciences, Committee on Machine Building VL - vol. 54 DA - 2017 T1 - Diagnostics of ballistic resistance of multi-layered shields SP - 205 UR - http://www.journals.pan.pl/dlibra/publication/edition/114912 T2 - Archive of Mechanical Engineering ER -