In a previous post I discussed electric motor testing, specifically static or offline testing. This week I would like to tackle the subject of dynamic or online testing of electric motors. As the name suggests, dynamic tests are performed while the electric motor is running i.e. when it…
read moreElectric motors are a key component for running machines in most industrial environments. Therefore it is important that they are properly monitored to avoid unwanted failures or shutdowns. Typically, there are two testing categories for electric motors: 1. Static or offline tests 2. Dynamic or…
read moreThe most important step before purchasing a new machine is to establish acceptance testing. Acceptance testing can be used to ensure the new machine is free from faults and runs smoothly before placing it in service. The purchase order can specify where and how vibration…
read moreMachines are typically balanced in one plane or two planes by adding or removing material. The previous article titled “Balancing in Manufacturing“, mentioned different types of imbalance in rotating machinery, and the importance of why machines have to be balanced. The question is: How do…
read moreWith the advent of better vibration measurement tools at reduced costs, may companies have implemented vibration monitoring programs to protect their machinery and ensure production does not suffer. In the past, it was common to run a machine until failure occurred; the biggest setback with…
read moreTop left: Unbalanced load in spin basket. Top right: Heavy weights used to dampen vibration.Left bottom: Washing machine tub is suspended by one of the springs.Right bottom: Dampers used to absorb vibration. The main cause of vibration in washing machines is unbalanced load due unevenly distributed clothes.…
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