Vibration testing guide

Vibration testing answers a simple commercial question — will it survive transport, launch, earthquakes or ten years on a vehicle? — with four different kinds of shaking.

The four excitation families

• Sine vibration — one frequency at a time, swept across a band. Finds resonances and fatigues a specimen at its weakest notes.
• Random vibration — all frequencies at once, with a defined spectral shape. Reproduces real environments (road, rail, flight) statistically.
• Shock — single transients: half-wave and full-wave pulses are the classic programmable waveforms for drops and impacts.
• Waveform reproduction — a recorded real-world vibration (a launch, a road profile) played back through the table.

The vibration test table in this line supports sine, random and waveform reproduction, with programmable half-wave/full-wave shock, across 1 Hz–600 Hz (electromagnetic) and 2 Hz–2,000 Hz (hydraulic) ranges, at accelerations to 20 g on the electromagnetic type.

Choosing a table by the numbers that matter

• Frequency range — your specimen's environment decides the band; the drive family follows (electromagnetic for the 1–600 Hz band, hydraulic for higher loads and the 2–2,000 Hz band).
• Load — 200 kg (electric) to 400 kg (hydraulic) on the test table; structures beyond that belong on the earthquake simulation platform at 120 tons in the seismic band.
• Combined axes — real environments are not single-axis; the table applies three-axis linear plus rotational vibration together.
• Coupled environments — temperature/humidity chambers and acoustic equipment can be integrated for multi-physics testing, because products rarely fail from vibration alone.
• Control accuracy — +/-0.1 mm translation and +/-0.05 degree rotation with dynamic delay under 10 ms on the reference table.

Write the test standard (or the environment you must reproduce) into the brief, not just the table size — the standard determines the excitation profile, and the profile determines the machine. The earthquake platform notes show the structural end of this discipline.