11/11/2023 0 Comments G force test machineThe platform requires a barge floating in a quarry or lake and explosive charges to generate different shock levels.īelow are two composites of MIL-S-901D standard shock testing machines for lightweight and mediumweight equipment. The requirements for “shipboard machinery, equipment, systems and structures”-including the requirements for test machines-are defined in MIL-S-901D.Ī floating shock platform is used for oversized products. With these shock machines, a pendulum hammer is driven into the stationary table a product is mounted to. Lightweight and medium-weight shock testing machines were first developed by the United States Navy. The pulse shape, duration, and amplitude of a mechanical shock machine can be changed by adjusting the speed of the machine’s movement or the impact of the movement on the product. Examples of mechanical shock machines are drop-shock machines, lightweight shock machines, medium-weight shock machines, a Hopkinson bar, and other mechanical systems designed to excite a transient pulse of a defined shape into a product. “Mechanical shock machine” is a generic title for a system without a closed-loop controller that excites the table a product is mounted to. For a more in-depth understanding of shock testing, let’s look at several types of shock machines. As we discussed in the previous lesson, the type of machine used to generate classical shock pulses is determined by four factors: the mass of the product being tested, the desired amplitude, the pulse duration, and the pulse shape.
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