Explosion proof principle and system analysis of t

2022-07-27
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Explosion proof principle and system analysis of bomb proof glass

in recent years, bomb explosion attacks (including car bombs and body bombs) and terrorist threats have been rising all over the world. Marriott Indonesia is a typical event. With the increase of bomb power, people's life safety and property have been seriously threatened. According to the analysis of safety experts and relevant data, the scattering of glass and the splashing of debris are the main causes of human injury. In bomb terrorist explosion events, 75% of the damage is related to glass, which means that if anti bomb glass is used, 75% of the damage can be reduced. If the glass of all buildings can be completely retained in the frame when the explosion occurs, the shock wave energy will not enter the room, and the indoor articles will not be damaged; High speed debris will not enter the building or fall to the ground to cause injury

the sharp expansion shock wave and vibration produced by explosion are the main causes of glass damage. The generation of debris comes from the weapon itself and the surrounding environment (for example, debris falling off due to the shaking of buildings). In order to withstand the destructive effect of bomb attacks, the glass must first withstand both shock wave and debris attacks. Our anti bomb glass and anti bomb glass frame system can be tested according to the glass retention, explosion impact pressure, shock wave pulse (kpa/msec), duration (MS msec), damage degree and other conditions through the calculation of professional calculation software. It can be calculated that the glass and system can be kept intact (the glass is not broken) and broken (some fragments can fall off and have been penetrated) when a certain amount of bombs explode. The bomb proof glass shall meet the test requirements of astmf standard

the anti explosion performance of the anti bomb glass is mainly manifested in two aspects:

1. It can withstand large bomb explosion impact load

2. After being impacted by the bomb explosion, the glass remains in the frame

bomb proof glass combination:

a type: dfbb+ high polymer material +dfbb

8mm high-strength single hook potassium fireproof glass + high polymer material +8mm high-strength single cesium potassium fireproof glass

b type: dfb10+ high polymer material +dfb10 focuses on the hot topics of science and technology and industry in many fields, such as copper alloy, aluminum alloy, magnesium alloy, lead alloy, zinc alloy, titanium alloy, rare refractory metal materials and surface treatment Discussion on key and difficult issues

10mm high-strength single piece cesium potassium fireproof glass + polymer material after the experiment is completed +10mm high-strength single piece cesium potassium fireproof glass

comparison of explosion resistance between bomb proof glass and other glasses:

when ordinary glass (annealed, tempered and semi tempered) is impacted by the bomb explosion, glass fragments scatter, the glass is penetrably damaged, and personnel and indoor facilities are seriously injured. RET≈. 2。

when ordinary laminated glass is impacted by a bomb explosion, the glass breaks and the shock wave enters the room. In serious cases, the whole piece of broken glass flies up and smashes into the human body, causing serious injury. The overall damage range is smaller than that of ordinary glass. I believe many customers have big questions. RET≈0.. 5。

when the anti bomb glass is impacted by the bomb explosion, the glass bends backward, and the frame system compresses and cushions backward. The glass is complete or broken, but there is basically no debris splashing, so as to ensure that indoor personnel and facilities are not injured. RET≈1.0。

note:

ret: retention value, indicating the overall retention of the glass in the frame

ret= weight of glass after explosion impact/weight of glass before explosion impact

when RET = 1.0, the whole glass remains in the frame, and the fragments are not scattered. However, the market requires that the glass whose general direction is system 1 does not penetrate

when RET = 0, the whole piece of glass leaves the frame, fragments scatter, and penetrating failure occurs

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