Vaasa city

Enterprise services:

Mechanical environmental condition tests

These tests assess mechanical and thermal stresses to identify weaknesses and improve device reliability.

 

Accelerated stress tests

In accelerated stress testing, mechanical and thermal stresses are combined. Temperature changes are achieved using liquid nitrogen and electrical resistors. The tests can determine the operational and failure limits of devices, helping to identify weaknesses that can be eliminated to develop more reliable devices.

Performance values:

  • Temperature range: -100…+200 ºC
  • Max. temperature change: 70 ºC/min
  • Max test piece size: 106 x 106 x 101 (W x D x H)
  • Frequency range: 2 Hz … 10 kHz
  • Max. acceleration: 50 GRMS (depends on test piece and frequency)
  • Max. test piece weight: 292 kg
  • Table dimensions: 96 x 96 cm²

Vibration testing

Mechanical stress can be roughly divided into general mechanical stresses, fatigue stresses, and the effects of resonances. Typical failures caused by these include weakening of strength, structural failure, functional disturbances, and increased wear. In practice, vibration and stress are difficult to avoid, and even small and seemingly insignificant vibration can be amplified into a significant disturbance due to resonances. The purpose of mechanical environmental tests is to determine the changes caused by mechanical stresses to the object under investigation.

Vibration tests according to the IEC60068 standard:

  • Vibration, sinusoidal, EN 60068-2-6
  • Shock, EN 60068-2-27
  • Bump, EN 60068-2-29
  • Vibration, broad-band random, EN 60068-2-64
  • Free fall, EN 60068-2-32

Technical specifications of the LDS V850-44T-Lin-Air vibration testing equipment:

  • Vibration head frequency range: 5-2000 Hz
  • Slip table frequency range: 5-1200 Hz
  • Maximum sine force: 20.2 kN peak
  • Maximum random force: 22.2 kN rms
  • Maximum shock force: 66.7 kN peak
  • Maximum acceleration: 60 G sine peak, 50 G random rms
  • Maximum acceleration (slip table): 30 G sine peak
  • Maximum speed: 2 m/s sine peak
  • Maximum amplitude (continuous): 50.8 mm p-p
  • Vibration head load capacity: 350 kg
  • Slip table load capacity: 500 kg
  • Slip table dimensions: 600 x 600 mm
  • liukupöytä 600×600 mm
  • Power: 25 kW
  • 2 measurement sensors
  • Stroboscope for vibration analysis

Contact person

Markku Suistala

Laboratory Engineer

School of Technology | Electrical Engineering

markku.suistala@vamk.fi | +358 207 663 508

Seppo Mäkinen

Principal Lecturer

School of Technology | Information Technology

seppo.makinen@vamk.fi | +358 207 663 388