To minimise the damage caused to products in the supply
chain from factory to consumers, manufacturers and packaging companies have a
vital interest in understanding the effects or shock and vibration on their
products. This encompasses food and beverage, cosmetics and pharmaceuticals and
electronic products. In the early days, such testing involved simply sending
goods through the supply chain and examining them after they reached the
consumer. This method had the disadvantage of variations in the amount of shock
and vibration the goods were subjected to. Initially this inconsistency was overcome
by laboratory testing with drop testers and electro mechanical shakers. While
this method gave consistent results, it did not necessarily represent the real
world scenario, meaning goods were either under or over tested.

This problem was overcome about 25 years ago by the use of
electrohydraulic shakers that could accurately reproduce the effects of
transportation. These shakers had the disadvantage of being costly to purchase,
run and maintain. Recent advances in electrodynamic shakers had enabled these
shakers to have strokes to 100mm and forces up to 40 Tons meaning such shakers
can test everything from pallets of beer to tubes of toothpaste. Modern electronic
controllers can now accurately reproduce the shocks and vibration
experienced in the field. Shakers are available for vertical testing only or in
both the vertical and horizontal directions. These systems provide consistent
testing and enable the effect of changes to product or packing to be
rapidly evaluated. Such systems are now much more affordable, more energy
efficient and more reliable. China being the source of much of the world’s
goods is also the major supplier of these transportation simulators.
Hylec now offers a range of shakers and controllers suitable for
transportation testing.

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