Safety helmet retention failure and roll-off analysis system for ISO standards
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Standard
(1)ISO 4151:Indian Standard for Protective Helmets
(2)ECE R22.05:Uniform Provisions Concerning the Approval of Protective Helmets and Their Visors for Drivers and Passengers of Motor Cycles and Mopeds
Feature
(1)Dynamic Tensile Testing: A tensile force is applied to the helmet using a tensile loading system, and the maximum tensile force is recorded to ensure the helmet does not detach during the test.
(2)Impact Testing: The helmet is worn and slid down a track to impact a rigid obstacle at a specific speed, and whether the helmet detaches is recorded.
(3)Data Acquisition: An accelerometer records the impact force on the headform, comprehensively evaluating the stability of the fastening system under dynamic impact.
(4)Safety Protection: The equipment is equipped with a safety enclosure to prevent injury from flying helmet fragments during testing.
Parameters
| Item | Detail |
|---|---|
| Mass of initial load | 3 kg ± 0.1 kg |
| Mass of falling weight | 10 kg ± 0.01 kg |
| Lowering height | 0.5 meters ± 0.01 meters |
| Measuring method | manual |
| Electricity | 220V 50HZ |
| Test theory | vertical descent |
Accessoriess
(1)Anthropomorphic headform
(2)Strap clamp
(3)Force sensor
(4)Impact drive assembly
(5)Data acquisition and analysis system
(6)Protection and limiting devices, etc.
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