This procedure determines the weight, height, and energy at which a sample fails when it is impacted with a free-failing weight according to ASTM D3029-F.
A drop weight impact tester is used to drop a weighted dart onto a specimen that has been clamped into a flat position. The dart weight is increased or decreased incrementally until at least half of the samples tested fail. Each sample is tested only once. The drop height may also be adjusted to increase the dart velocity upon impact.