Practical Solutions to Machinery and Maintenance Vibration Problems
Chapter 7, Misalignment
Section 16, Why Symptoms of a Vibration Source are not Always Perfectly Clear (Mixtures of Vibration Vectors from More than One Source)
For those with formal education as engineers or technicians, understanding vectorial addition should have been part of their early post high school training. However, many have not had much chance to use the addition of vectors in their work, and a short review will be helpful. Also, there are some who never did get an understanding of vectors in their training, and this explanation has to take them into account as well. The explanations do not have to be thoroughly understood, as a "gut level" understanding is enough. Those who do presently understand simple vector addition, can proceed directly to "Using Understanding of Vectorial Addition for Vibration Analysis."
This textbook contains only part of the information in our Practical Solutions seminar.