In bomb attacks and accidental bombings, anti-bomb glass minimizes the direct damage caused by ultra-high loads of explosion shock waves and high-speed splashing of glass fragments, reducing the cost of repairing the facilities around the attack or the explosion center. The load of the anti-bomb glass in the explosion shock wave energy increases sharply, and it does not penetrate under the condition of increasing several times or even several times, and the glass retention value RET ≈1. However, once the monolithic glass (including float glass, tempered glass, and insulating glass) is broken, RET quickly falls below 0.3 as soon as the critical crushing pressure is slightly exceeded, and the glass fragments are scattered and penetrating damage occurs.
Explosion-proof function
In recent years, bomb blasts (including car bombs, human bombs) and terrorist threats have been rising worldwide. The Marriott Hotel in Indonesia is a typical event. As the power of bombs increases, people’s lives and property are affected. Extremely serious threat. According to analysis by security experts and related information, the scattering of glass and the splash of debris are the main causes of human injury. In the bomb blast, 75% of the damage is related to glass, which means that if you use anti-bomb glass, you can reduce the damage by 75%. If the glass of all buildings can remain intact in the frame at the time of the explosion, the shock wave energy will not enter the room, the indoor items will not be damaged; the high-speed debris will not enter the building or fall off the ground. hurt.
Frame system
The sharply expanding shock waves and vibrations caused by the explosion are the main cause of glass damage. The generation of debris originates from the weapon itself and the surrounding environment (for example, the debris is detached due to the shaking of the building). To withstand the destructive effect of the bomb attack, the glass must first withstand both the shock wave and the debris. Anti-bomb glass and anti-bomb glass frame system can be tested according to the calculation of professional calculation software, such as glass retention, explosion impact pressure, shock wave pulse (kPa/msec), duration (msec msec), damage degree, etc. Calculate a certain amount of bomb explosion when the glass and system can be kept intact (glass is not broken), cracked (cracks, some fragments can fall off, have penetrated). Anti-bomb glass should meet the test requirements of ASTM F1642-96.
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