Wind turbines are prone to vibration problems. According to research data, about 40% of all wind turbines have high vibrations which exceed vibration limits. These vibrations cause structural loads, increased wear, adverse start-up conditions, and often vibration-related shutdowns.
read moreTorsional vibration is the angular oscillation of a rotating object such as a drive shaft, caused by fluctuating torsional levels. It is a common occurrence in power transmission systems such as engines and automotive drivetrains. Torque transmission is rarely “smooth” since the torque in the system…
read moreAn overhung machine is one where the fan or impeller lies outside of the bearings that support the shaft. Figure 1, below, shows an illustration of an overhung impeller. Figure 1. Overhung impeller connected to a motor Overhung machines tend to have high 1X…
read moreWorker in industries such as construction, mining, manufacturing and agriculture are at particular risk of exposure to potentially unsafe vibration levels. Exposure can be caused from operation of rotating, reciprocating, and percussive machinery and tools.
read moreAn overhung machine is one where the fan or impeller lies outside of the bearings that support the shaft. Figure 1, below, shows an illustration of an overhung impeller. Figure 1. Overhung impeller connected to a motor Overhung machines tend to have high 1X forces…
read moreIt is essential to design a device that has to meet a certain vibration level. Ideally, the desired vibration response must be clearly stated before a design can begin. Many different methods have been proposed to measure and describe acceptable levels of vibration in many…
read moreMachines are expected to vibrate as little as possible to avoid component fatigue/failure and in some cases, reduce user comfort level, for example, violent vibration of an automobile can lead to mechanical failure and driver discomfort. There are ways to avoid violent vibration such as…
read moreSome boats vibrate more and make a lot of noise. Vibration and noise in boat require immediate attention. Vibration and noise are related; vibration generates unwanted noise. Below are some ways to decrease vibration and noise on your boat: Boat PropellersOne of the most common…
read moreThere are two vibration situations in which statistical analysis is useful. The first situation occurs when the vibration amplitude of a system appears to be random in time. In this case, it is convenient to describe the response of the system statistically. This form of…
read moreIt is recommended to perform review of all the plant equipment before selecting the technology to monitor vibration and detect faults. There are issues that should be considered when selecting technology such as: • Equipment reliability requirement • The importance of the measurement process •…
read more