2019-05-25 
278
Delivery of the JQA-202-335 Vibration test system to Thailand customer
We have delivery the JQA-202-335 Vibration Test System to Thailand customer .
JQA-202-335 Vibration Test System
- Maximum Sine force :20kN /2000kgf
- Maximum displacement :51mm/2inches
- Maximum Acceleration:100g or 980m/s2
- Slip table 600x600
- Head expander table 600x600
-Test standard: MIL-STD-202-Method 204
- Application : petroleum pipeline
2.4.2 Part 2. The specimens shall be subjected to a simple harmonic motion having an amplitude varied to maintain a constant peak acceleration of 10g (peak), the frequency being varied logarithmic-ally between the approximate limits of 55 and 2,000 Hz (see 2.10). The entire frequency range of 55 to 2,000 Hz (no return sweep) facilitate the establishment of a resonant frequency, the above rate may be decreased. If resonance is detected,specimens shall be vibrated for 5 minutes at each critical resonant frequency observed. This procedure shall be performed in each of three mutually perpendicular directions. Interruptions are permitted provided the requirements for rate of change and test duration are met.
