Choosing A Vibration Test Lab Part 2

Part 2 – Selecting a Lab and Performing Your Test

If you have not done so yet, please check out Part 1 – Defining your project and  Obtaining a Quote.

You obtained quotes from a couple of vibration test labs.  Your next task is to select a vibration test lab to perform your vibration test.  Your selection should not be based upon price alone.  Factors that should affect which lab you choose are capability, cost, timing, location, quality, and other special requirements. Continue Reading Choosing A Vibration Test Lab Part 2

Choosing A Vibration Test Lab Part 1

Part 1 – Defining your project and Obtaining a QuoteVibration Test Equipment

Vibration testing is a very specialized field, not very well understood by many.  There are different types of vibration and there are an enormous number of vibration test specifications.  Vibration testing equipment is very expensive to purchase forcing many companies to hire a vibration test lab to fulfill their vibration testing requirements.  So what should you expect when Choosing A Vibration Test Lab?

Continue Reading Choosing A Vibration Test Lab Part 1

Mixed Mode: Sine on Random Vibration Testing, RoR, SoRoR

random vibration testing

Mixed Mode Vibration Testing is less common than Sinusoidal and Random Vibration Testing.  However, it does have a special purpose for simulating specialized helicopter vibration or vibration from tracked vehicles such as tanks.

The three mixed modes of vibration testing are:

  • Sine-on-Random (SoR)
  • Random-on-Random (RoR)
  • Sine-on-Random-on-Random (SoRoR)

Some common test standards that have specifications for Mixed Mode Vibration Testing are:

  • MIL-STD-810 Department of Defense Test Method Standard for Environmental Engineering Considerations and Laboratory Tests
  • RTCA DO-160 Environmental Conditions and Test Procedures for Airborne Equipment

Continue Reading Mixed Mode: Sine on Random Vibration Testing, RoR, SoRoR