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Vibration Analysis
Shipboard/Shoreside

Many times plant or shipboard maintenance personnel will rebuild a piece of equipment, incurring expenses in labor, spare parts and downtime when there is no need to do so. Let us identify mechanical problems using vibration analysis and make recommendations as to the best way to correct them PRIOR to actual machine failure.

Vibration analysis is one of Lightship's primary machine diagnostic tools, governed by two basic facts:

  1. All common failure modes have distinct vibration frequency components that can be isolated and identified.
  2. The amplitude of each distinct vibration component will remain constant unless there is a change in the operating dynamics of the machine train.

Vibration measurements such as velocity, displacement, acceleration, and HFD (High Frequency Detection) are collected as appropriate for the particular machinery using a spectrum analyzer in all three planes: horizontal, vertical and axial.

The Lightship Group's engineers are Certified Vibration Specialists who will diagnose your equipment, pinpoint any problems, recommend repairs and schedule repairs, and perform machinery acceptance testing.


Common Problems Identified Through Vibration Analysis:

  • Imbalance
  • Misalignment
  • Looseness
  • Bent Shaft
  • Bearing Faults
  • Gear Faults
  • Belt Faults
  • Aerodynamic Faults
  • Electrical Faults
  • Hydraulic Faults
  • Lubrication Problems

Click here to see an Actual Machine Fault as diagnosed by ExpertAlert. This link provides a brief overview of a vibration reading taken on a chill water pump.

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