Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.
Safety helmet for engineer standing
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For ,impact testing,, the typical ,test, apparatus consists of a rig that drops a helmeted headform in a guided freefall to an anvil on the floor. You strap ,the helmet, on the headform, turn it upside down so ,the helmet, hits the anvil first and drop it onto the anvil. ,The helmet, is oriented before each drop to ,test, it's most vulnerable areas.
Peripheral vision (“side vision”) through a 105-degree arc from ,the helmet,’s midline. ,Impact absorption test, must see less than 275 G of peak acceleration. A headform is fitted with ,the helmet, and dropped from a fixed head onto a steel anvil.
Helmet, sample #4 points 45, 180 and 270 degrees ,Helmet, sample #5: points 0 and 135 degrees As defined in UNECE 22.05 (,Impact,-,absorption test,), with: platinum cure silicone coated headform (µ = 0.78) “oblique anvil”: 45º plane, abrasive paper to be substituted after significant damage ,impact, velocity 8.00 (+0.15, -0.00) [m/s] PENETRATION ,TEST
The spot for ,impact, – ,absorption, tests will cover all area of safety ,helmet,, which are point B – the front ,impact,, point X – the side ,impact,, point P – the upper ,impact,, point R – the back ,impact, and point S – the ,impact, on chin area (this is used for safety ,helmet, with chin protection – …
19/2/2017, · Essentially, these comparative drop ,test, results revealed that the faceguard adds a stiffening kinematic constraint to the shell that lessens total energy ,absorption,. The current NOCSAE standard ,test, methods can be improved to represent on-field ,helmet, hits by attaching the faceguards to ,helmets, and by including two new ,helmet impact, locations ...
The shock ,absorption test, is included in the ,test, standard for ,helmets, (EN 1078), in contrast to the oblique tests. The ISO head form was used and the ,test, was performed with an ,impact, speed of 5.42m/s. ,The helmets, were tested in a temperature of 18°C.
Impact absorption test,: Like the ECE 22.05, the DOT ,Helmet, Standard also apply this ,test, through ,the helmets, although is not exactly the same. Retention system ,test,: Another point in common between both regulations is the retention system ,test,.