The basic principle of the test of the drop test machine

Test principle of drop test machine:

Lift the test sample of the drop test machine to a predetermined height, and then let it fall freely according to the predetermined state and collide with the impact table.

Drop test machine test equipment:

The impact table of the drop test machine is a horizontal plane, which does not move or deform during the test and meets the following requirements.

A. It is a whole object, the mass is at least 50 times the mass of the test sample

B. There must be a large enough area to ensure that the test sample falls completely on the impact table

C. The horizontal height of any two points on the impact table must not exceed 2mm

D. When the static load of 10kg is applied to any area of ​​100mm2 on the impact table, the deformation shall not exceed 0.1mm

Lifting device of drop test machine:

During the lifting or lowering process, the test sample should not be damaged

Supporting device for drop test machine:

The device supporting the test sample shall be able to keep the test sample in the predetermined state before release

Release device:

During the drop of the release test sample, the test sample should not touch any part of the device to ensure its free fall

experiment procedure:

Lift the test sample to the desired drop height position and support it according to the predetermined state. The difference between the straight height and the predetermined height shall not exceed ± 2% of the predetermined height. The drop height refers to the distance between the lowest point of the test sample and the impact table when it is ready to be released according to the following predetermined state. When the test sample is released, the angle between the drop surface of the test sample and the horizontal plane should not exceed 2 ° when the surface is dropped. When the edge is dropped, the angle between the dropped edge and the horizontal plane should not exceed 2 °. The error between the specified surface and the impact table on the test sample should not exceed ± 5 ° or 10% of the included angle (the larger value is Quasi), so that the gravity line of the test sample passes through the dropped

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