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Vibration Monitoring

Vibration Monitoring
  • Measurement of vibrations are expressed in Peak Particle Velocity (PPV)
  • PPV is the maximum velocity experienced by any point in a structure during a vibration event.
  • PPV is an indication of the magnitude of energy transmitted through vibration.
  • PPV is an indicator often used in determining potential damage to buildings from stress associated with blasting and other construction activities.
  • Unit in “inches per second” (ips)


  • A seismograph, or seismometer, is an instrument used to detect and record ground vibrations including earthquakes.
  • Generally, it consists of a mass attached to a fixed base. During ground vibration, the base moves and the mass does not. The motion of the base with respect to the mass is commonly transformed into an electrical voltage. The electrical voltage is recorded on paper, magnetic tape, or another recording medium.
  • This record is proportional to the motion of the seismometer mass relative to the earth, but it can be mathematically converted to a record of the absolute motion of the ground.
  • Seismograph generally refers to the seismometer and its recording device as a single unit.




  • Structural Vibration - analysis and identification of vibration sources and problems in structures
  • Product Testing - vibration and shock testing to identify potential design problems
  • Acceptance Testing - testing and analysis to ensure products comply with specified vibration tolerance limits
  • Workplace Vibration - measurement and analysis of vibration from hand tools and other equipment

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