Material performance test : including the strength, hardness, toughness and other mechanical properties of the shell material, as well as the density of the buffer material, elastic modulus, compression permanent deformation.
The process of helmet impact testing consists of the following steps:
Helmet Lateral Rigidity, According to the standard test method, the large deformation shall not exceed 40mm, the residual deformation shall not exceed 15mm, and no debris shall fall off the cap shell.
According to the test criteria, select the appropriate head mold and piercing device one.