By Ian Crouch
The technology of Armour fabrics comprehensively covers the variety of armor fabrics from steels and light-weight alloys, via glasses and ceramics, to fibers, textiles, and protecting clothing. The ebook additionally discusses elements of analytical and numerical modeling, in addition to laboratory-based high-strain price checking out and ballistic trying out methodologies. each one bankruptcy is written from a world point of view, together with stories of the present worldwide literature, and accommodates case reviews that attention upon actual existence purposes, examine results, and classes realized. The probability spectrum is particular to small fingers ammunition, excessive pace fragments, and stab and spike assaults, in addition to blast loadings.
- Features enter from an editor who's a professional in his box: Dr. Ian Crouch, the writer of over eighty guides in his box, with 3 patents to his name
- Provides systematic and finished assurance of armor fabrics, modeling, and testing
- Offers a cross-disciplinary strategy that brings jointly services in fabrics technology and security engineering
- Discusses features of analytical and numerical modeling, in addition to laboratory-based high-strain expense trying out and ballistic trying out methodologies
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Additional resources for The Science of Armour Materials
Example text
24, a region of comminuted material occurs ahead of the projectile, but remains confined within the boundary of the conoidal fracture. This is often referred to as the Mescall zone, after John Mescall, a US researcher working at the Army Materials and Mechanics Center in the 1980s, who predicted its presence from carrying out numerical modelling studies. 24 Schematic of conoidal fracture in brittle solids, following initiation of Hertzian cracks on the impacted surface. Introduction to armour materials 33 occur at high velocities with small arms ammunition.
The premature failure event occurs as a result of intense bending stresses created in the target. Some degree of delamination is a natural precursor. It occurs on all types of targets: thick steel targets, as above, and thick aluminium or titanium targets, as well as some grades of laminated materials. In all cases, it is caused by a mechanical fracture event, late in the penetration process, and is not caused by a shock-wave interaction. It is not to be confused with classical spallation (see later mode).
At this point the reader should refer to the overview given by Gooch (2002) and to others, like Yaziv (2008), who have presented work on appliqué armour systems. This is an extremely broad and complex subject, reflecting the imaginative and innovative thinking that has gone into developing protective systems. 8 System • • • Application Obliquity Tank (MBTs) Aluminium alloys Laminated Naval vessels Active/smart Titanium alloys Spaced Helicopters Electromagnetic Ceramics Perforated Personnel Composites Elemental (FRPs) Armoured personnel carriers Explosives Logistic vehicles (G) • • • Geometry Reactive Passive • • Materials Steels (F) (E) (A) (B) (C) (D) A: Main battle tank armours using a passive system including steel plates at oblique angles; B: Bar armour, consisting of elements of steel, designed to protect a vehicle against antitank rocket-propelled grenades by forming a rigid cage which disrupts the shaped charge of the warhead; C: A passive, composite armour system used to protect RAN minehunters (see Chapter 5); D: A well-known passive system of ceramics and composites protecting military helicopters; E: A set of SAPI plates e another example of a passive system consisting of ceramics, composites and textiles to protect armed service personnel (see Chapter 7); F: An example of a reactive system: a reactive armour consisting of laminates of steel and explosive, designed by the US Army, developed by Rafael in Israel, and attached to a US M2 Bradley APC; G: An example of a smart, active armour system fielded by the Israel Defense Forces, which involves sensors, to detect incoming projectiles, as well a suite of defensive aids to defeat the projectile.
