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Bullet proof glass, or bullet-resistant glass is made from strong, transparent materials. It can vary in thickness between three-fourths inch to three inches. The structure is designed to resist penetration from projectiles, particularly bullets. Two or more materials may be used in constructing these units. Usually one layer is soft and the other layer is hard. Soft layers allow for elasticity in the structure so that the glass does not shatter.
The design goal for these devices is to appear normal, but function as protection against small firearms. Thermoplastic, polycarbonate and sheets of laminated glass are used in the production process. Tempering; and heating, cooling and chemical processes give the materials strength and shock resistance.
Thickness of the structure is correlated to its ability to resist impact. The plastic that exists within laminate designs offer resistance against force created by axes, clubs and similar weapons, but the plastic alone cannot stop a projectile. The hard materials are able to flatten the bullet, and then the plastic deforms and takes in left over energy or shock. Together, these materials prevent penetration.
These structures are given a level of protection. This level is based on their effectiveness at blocking a specific projectile coming at a specific speed. During the testing process, guns are fired from set distances in set patterns into the material.
How effective these devices are can be influenced by their amount of exposure to UV radiation, extreme temperatures and solvents. The ability of these structures is greatly influenced by the environment in which they are installed. For instance, when polycarbonate is impacted by force in an area that has a temperature below 7 degrees Celsius, the material breaks off into pieces called spall. The spall can become a projectile.
There have been developments in these devices. One-way bulletproof devices are a new structure that are commonly utilized on armored trucks. It is able to resist forces from the outside in, but allows forces from the inside out. There are also security laminates. These pieces of film, when bonded using pressure-sensitive adhesive to the inner surface of regular window, can provide the same amount of protection as multi-layered bulletproof devices.
These impact-resistant structures are used in many ways. They may be installed on car windshields or armored trucks. They can be used for protection against natural disasters, particularly hurricanes. Government and military buildings also use these devices. They are installed in many banks and penitentiary facilities as well. Read more about: bullet proof glass
The design goal for these devices is to appear normal, but function as protection against small firearms. Thermoplastic, polycarbonate and sheets of laminated glass are used in the production process. Tempering; and heating, cooling and chemical processes give the materials strength and shock resistance.
Thickness of the structure is correlated to its ability to resist impact. The plastic that exists within laminate designs offer resistance against force created by axes, clubs and similar weapons, but the plastic alone cannot stop a projectile. The hard materials are able to flatten the bullet, and then the plastic deforms and takes in left over energy or shock. Together, these materials prevent penetration.
These structures are given a level of protection. This level is based on their effectiveness at blocking a specific projectile coming at a specific speed. During the testing process, guns are fired from set distances in set patterns into the material.
How effective these devices are can be influenced by their amount of exposure to UV radiation, extreme temperatures and solvents. The ability of these structures is greatly influenced by the environment in which they are installed. For instance, when polycarbonate is impacted by force in an area that has a temperature below 7 degrees Celsius, the material breaks off into pieces called spall. The spall can become a projectile.
There have been developments in these devices. One-way bulletproof devices are a new structure that are commonly utilized on armored trucks. It is able to resist forces from the outside in, but allows forces from the inside out. There are also security laminates. These pieces of film, when bonded using pressure-sensitive adhesive to the inner surface of regular window, can provide the same amount of protection as multi-layered bulletproof devices.
These impact-resistant structures are used in many ways. They may be installed on car windshields or armored trucks. They can be used for protection against natural disasters, particularly hurricanes. Government and military buildings also use these devices. They are installed in many banks and penitentiary facilities as well. Read more about: bullet proof glass
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