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helmet testing machine
Safety Helmet Impact Resistance Puncture Tester
This machine specially test fire helmets impact resistance performance, can also do the anti-penetration properties test. Determination of fire helmets impact resistance performance, put the special head model with a good helmet(aluminium magnesium alloy materials) installed in the high sensitivity of the sensor, then use the 5kg hammer from 1 m height of impact, and the high sensitivity strength induction device detect the impact instantaneous force value to judge helmet shock absorption performance is good or bad.
Test methods:
Preconditioning: tempering treatment, ultraviolet irradiation pretreatment, water treatment, the above requirements can be preintegrated with the A705 pretreatment tank helmet shock absorption performance test methods: the height of the drop hammer 1000mm ± 5mm; sequentially by flooding, heat, cold, ultraviolet radiation pretreatment helmets for testing.
Puncture resistance test method: puncture the cone axis so that it passes through the center of the helmet crowns 100mm diameter weakest point within the structure, adjusting cone tip to puncture crowns contact point height 1000mm ± 5mm, turn right after flooding, high temperatures,temperature, ultraviolet irradiation pretreatment helmets tested.
Corresponding standard:
GB/T 2812-2006<Helmets test method> GB/T 2811-2007<Helmet>
Drop Hammer |
drop hammer impact |
test Weight |
5-5.01kg |
Hammer hemispherical diameter |
96 mm |
Material |
45 # steel |
Puncture Hammer |
3-3.05kg weight |
Angle |
perforated section cone angle of 60 ° |
Cone tip diameter |
1mm |
Length |
40 mm |
Maximum diameter |
28 mm |
Hardness |
HRC45 |
Force Sensors |
Measurement range 0-20KN, corresponding to the minimum frequency of 5KHz dynamic force sensor, accurate to 1N |
Drop height |
1000mm |
1 #, 2 # Si alloy head type of testing each one |
|
Standard |
GB / T2812-2006 requirements of Appendix A |
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