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A material is said to be frangible if through deformation it tends to break up into fragments, rather than deforming plastically and retaining its cohesion as a single object. A common cookie or cracker are examples of frangible materials, while fresh bread, which deforms elastically is not frangible.
Frangible structural components
A frangible light pole base is designed to break away when a vehicle strikes it. This lessens the risk of injury to occupants of the vehicle. Frangible supports are also used for Airport Approach Structures.1
Frangible bullets
A frangible bullet is one that is designed to disintegrate into tiny particles upon impact to minimize their penetration for reasons of range safety, to limit environmental impact, or to limit the danger behind the intended target. Examples are the Glaser Safety Slug and the breaching round.
Frangible bullets will disintegrate upon contact with a surface harder than the bullet itself. Frangible bullets are often used by shooters engaging in close quarter combat training to avoid ricochets; targets are placed on steel backing plates that serve to completely fragment the bullet. Frangible bullets are typically made of non-toxic metals, and are frequently used on "green" ranges and outdoor ranges where lead abatement is a concern.23
References
- ^ Wright Aldridge. "A Lesson in Safety". Federal Highway Administration.
- ^ Tony L. Jones. "FRANGIBLE AND NONTOXIC AMMUNITION". Police and Security News.
- ^ "Frangible Ammunition". GlobalSecurity.org.
Wikipedia content modification information:
- This page was last modified on 8 February 2008, at 23:18.
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