Test of Laminated Thin Armor Plate
Abstract
The purpose of this investigation was to study the relative ballistic efficiencies of the four types of laminated plates when tested with caliber .50 A.P. Ml and 37 mm. A.P. M39 ammunition. Conclusions: (1) The sections built up with commercial steel backing had about the same ballistic limit as the sections built up with heat treated armor plate. (2) The ballistic limit of this particular laminated plate was generally 300 feet per second lower than the homogeneous plate of the same thickness. (3) Although the plates heat treated at Watertown Arsenal were reported as having a Brinell Hardness of 401/429, Hardness surveys after ballistic test revealed that the true hardness was 444/477, a value much too high to expect good ballistic properties under 37 mm. impact.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 15, 1938
- Accession Number
- ADA953883
Entities
People
- E. L. Reed
- S. L. Kruegel