Velocity variation of different pneumatic shock and collision test machines under the conditions of no-load and nominal load are indicated on the samples in the show room, customer can find suitable machines according to their own requirements.

For example: The weight of test specimen is 30kg, size is: 400x400mm, need to meet the half-sine test index of 100g, 11ms, according to the below formula:
Half-sine wave：△v=AD×10^-3 =2×1000（m/s²）×11（ms）÷3.14÷1000
≈7＜12（The velocity variation of VASII400 under maximum loading），
So VASII400 shock test machine can meet the requirment of such test.