Low frequency mechanical vibration table transportation simulators for packaging vibration test
Description and Application
Mainly used in repeating impact, unloading or jump test that comply to ISTA , ASTM, TAPPI, ISO MIL-STD, FED-STD, UN, DOT and other industrial and government standards. Frequency range is 2-5Hz with fixed displacement of 1 inch (25.4 mm)and maximum acceleration of 1.25 G.
YST series vibration shakers apply eccentric cam principle to achieve rotation (marquee), vertical and non-synchronized (30°unbalance vibration) vibration modes
- Precise digital display for the vibration frequency.
- Synchronous low noise wide belt drive mechanism.
- Guide Rail type fixture for specimen, easy to operate.
- Heavy channel iron base equipped with damper rubber makes the machine easy to install, having large loading capacity, ensuring stable running.
- Rotational Vibration method complies with international test standard.
- Suitable for toys, electronics, furniture, gifts, porcelain, packaging industries for packaging transportation simulation test.
|Power Supply||AC220V±10% 50Hz||3-phase 380V±10% 50Hz|
Are your company a trading one or a factory ?
Directly factory, more than 15 years focusing on test instruments field, 6 years exporting experience.
How do you attach the hardware you’re testing to your shaker?
By means of a fixture, usually aluminum or magnesium for lightness coupled with rigidity. They can be cast, or smaller fixtures machined from solid stock. Most fixtures are welded.
How do you control shakers?
If we’re looking for resonances in the product we’re testing, we command the shaker to shake the product at one frequency at a time but to vary that test frequency, to sweep it over a range of frequencies.But more realistically, we command the shaker to vibrate randomly and to excite all the resonances simultaneously.Control commands go into the keyboard of a specially-programmed computer.
What are those resonances?Are they bad?
Have you ever noticed the steering wheel moving with rather large displacement amplitude, larger than the input to the column? That magnification is called resonance. Possibly it annoys you. There’s a slight chance that in a few years that whipping of the steering column might cause bending fatigue failure.When we shake an automotive or ship or land vehicle instrument, we're looking for, for example, portions of printed wiring boards (PWBs) responding with greater motion than we're inputting. That flexing may damage PWB wiring, it may damage the attached components, and it will damage the soldered connections between components and the PWB.