Normal impact and perforation of thin plates by hemispherically-tipped projectiles — II. Experimental results
- 31 December 1984
- journal article
- Published by Elsevier BV in International Journal of Impact Engineering
- Vol. 2 (4), 299-324
- https://doi.org/10.1016/0734-743x(84)90020-4
Abstract
The present investigation is concerned with the measurement of the forces, permanent deflections, strains and plugs produced by rigid projectiles during contact and perforation of thin aluminium and mild steel plates. Tests were generally executed just below and just above the ballistic limit; a few experiments were conducted at much higher velocity. The direct force measurements were performed by means of a special technique using a projectile containing a piezoelectric quartz crystal. Observations were carried out on more than two hundred 2024-0 aluminium plates, 0.51, 1.27 and 3.175 mm thick and 1.22 mm thick mild steel plates. The tests involved the use of hard-steel projectiles of 12.7 and 6.35 mm diameter with three different nose shapes. The residual strains, of the order of 40%, were measured by using a grid method while the strain history in the vicinity of the impact point was determined by a specially designed gage capable of measuring strains up to 100%.Keywords
This publication has 8 references indexed in Scilit:
- Petalling of thin, metallic plates during penetration by cylindro-conical projectilesInternational Journal of Solids and Structures, 1985
- Plate perforation phenomena due to normal impact by blunt cylindersInternational Journal of Impact Engineering, 1984
- Normal impact and perforation of thin plates by hemispherically-tipped projectiles—I. Analytical considerationsInternational Journal of Impact Engineering, 1984
- Constraint to Side Flow in PlatesJournal of Applied Mechanics, 1983
- A phenomenological penetration model of platesInternational Journal of Impact Engineering, 1983
- Penetration and perforation processes in metal targets at and above ballistic velocitiesInternational Journal of Mechanical Sciences, 1971
- Projectile impact on an infinite, viscoplastic plateInternational Journal of Solids and Structures, 1971
- Plastic deformation and perforation of thin plates resulting from projectile impactInternational Journal of Solids and Structures, 1971