Sa njihovog sajta
Each model of motorcycle helmet undergoes 30 linear and 2 oblique impact tests in order to achieve a SHARP rating. To complete these 32 tests, a minimum of 7 individual helmet samples, in a range of sizes, are subjected impacts at three speeds (6, 7.5 and 8.5 metres per second) as follows:
Helmet
Velocity
Impact type and location on helmet
Impact surface
1
6.0 m/s
Linear impacts to Front, Left, Right, Crown and Rear
Flat anvil
2
6.0 m/s
Linear impacts to Front, Left, Right, Crown and Rear
Kerb anvil
3
7.5 m/s
Linear impacts to Front, Left, Right, Crown and Rear
Flat anvil
4
7.5 m/s
Linear impacts to Front, Left, Right, Crown and Rear
Kerb anvil
5
8.5 m/s
Linear impacts to Front, Left, Right, Crown and Rear
Flat anvil
6
8.5 m/s
Linear impacts to Front, Left, Right, Crown and Rear
Kerb anvil
7
8.5 m/s
Oblique impacts to the Left and Right sides
Abrasive anvil
For the linear impact tests, helmets are impacted against both flat and kerb shaped surfaces which represent the surfaces likely to be impacted in real world road accidents. The impact anvils are as specified in UN ECE Regulation 22.05. The oblique impact test is carried out to assess the surface frictional properties of the helmet that can lead to rotational acceleration injuries. For this test SHARP follows the requirements of Regulation 22.05 completely.
Given the COST 327 recommendations concerning the benefits of improved energy absorption, SHARP tests at a higher impact velocity than required by regulation (8.5m/s). This represents approximately 30% more energy input than required by UN ECE Regulation 22.05.