Results 231 to 240 of about 2,515,862 (285)

Armor Plate Ballistic Testing

1944
Abstract : The fundamentals are presented for a rational system of armor plate ballistic testing. The desirable properties of armor are first discussed. These are (1) high resistance to penetration, (2) freedom from back spalls, (3) freedom from cracking (shock failure).
C. Zener, N. A. Matthews, H. H. Zornig
openaire   +1 more source

Ballistic Impact Testing of Composite Structures

Earth & Space 2006, 2006
This article deals with techniques which have been developed to study the behavior of composite materials and structures under high speed ballistic impact conditions at the NASA Glenn Research Center (GRC) Ballistic Impact Facility. The techniques include launching systems, fixture methods, imaging systems and instrumentation systems.
J. Michael Pereira, Duane M. Revilock, Jr., William A. Arnold   +2 more
openaire   +1 more source

Improved Ballistic Test and Evaluation Methodology

2006 IEEE Systems and Information Engineering Design Symposium, 2006
Ballistic test and evaluation of body armor is of great priority for the US Army to meet current operational needs. The current experimental design process centers on standardized threat level classifications and a baseline ballistic limit velocity, V50; both measures originate from the National Institute of Justice circa 1979. The measures are complex,
Shane Sullivan, John Halstead
openaire   +1 more source

Test of the ballistic hypothesis of movement and the ‘point of no return’

Nature, 1977
How long does it take to stop or modify a movement once it has begun? Where there is an error in producing an action as intended (usually because of control-display incompatibility) subjects may correct it in less than their normal reaction time (RT) by proprioception1 or efference-copy monitoring2—4.
openaire   +2 more sources

Ballistic Pendulums and Dynamic Testing of Clays

Journal of the Geotechnical Engineering Division, 1979
Ballistic pendulums provide simple and effective means of testing clays at constant rate of strain. Tests were performed at strain rates of 1,400%/sec and 2,300%/sec. Increasing stiffness of stress-strain response reported for lower strain rates (up to 0.17%/sec was found to occur for higher strain rates as well as for the horizontally oriented samples.
Farrokh N. Screwvala, Raj P. Khera
openaire   +1 more source

BALLISTIC VALIDATION TESTING WITH CONFIDENCE SPECIFICATIONS

SAE Technical Paper Series, 2021
<title>ABSTRACT</title> <p>Ballistic protection requirements often call out a minimum probability of no penetration against a projectile fired at a specified velocity with a required confidence level.
openaire   +1 more source

Development of a Sabot for Ballistics Testing

SAMPE 2022, 2022
F. Solis, G. Guo, L. Peel, S. Alam, E. Ancira   +4 more
openaire   +1 more source

On the determination of ballistic properties with ballistic test motors

20th Joint Propulsion Conference, 1984
R. GLICK, W. BROOKS
openaire   +1 more source

Ballistic testing of transparent armour ceramics

Journal of the European Ceramic Society, 2009
The testing methodology for transparent armour is described. The focus of this paper is on the assessment of the protective strength of transparent ceramics being used in transparent armour systems. Not only the ballistic testing method but also experimental techniques which allow the visualization of damage and the projectile penetration are discussed.
openaire   +1 more source

JTCG/AS Interlaboratory Ballistic Test Program

1997
Abstract : A two-phase study was conducted to determine the efficacy of MIL-STD-662E in ballistic protection limit determination for advanced lightweight armor technologies. The first-phase results demonstrated an unacceptable variability in limit estimates across sites.
Barry A. Bodt, Albert L. Chang
openaire   +1 more source