A 6-ton MRI Scanning machine was planned to place on the 1st floor of a Tower. To fulfill the specifications of the MRI installation, the existing vibration condition of the floor had been checked since vibration on floor will lead to the distorted images and affect the image quality from scanning. RE conducted the floor…
Microelectronics Fabrication Facilities Vibration Measurement Two 2 buildings consisting of a 5-story building and a 2-story building were installed with sensitive machines, which fabricate the microelectronics components such as external hard drives. Those require a free-vibration condition. Thus, 70 locations of machine vibration were measured. In each location, vibration in all three axes including two horizontal…
Building vibration caused by road traffic In one case undertaken by RE, heavy-road-traffic-induced vibration caused a 5-story building to vibrate and shake. The building is located on the soft soil layer of the Chao Phraya River basin, which lowers stiffness. Also, damping amplifies the vibration. In the testing process, real-time acceleration was monitored on each floor…
Floor vibration due to machines operations In one case undertaken by RE, it was found that machine vibrations during the operations caused strong vibrations to the floor underneath. Thus, accelerometers were used to capture real-time floor and machine vibrations for all axes. Further, floor acceleration was double-integrated to floor dynamic displacement, as well as floor static…
Steel structure vibration due to machines Large machine operations can cause vibration to the supporting platforms as well as the sheltering structures. Vibration is measured, and evaluation is made accordingly. In an example case of this, undertaken by RE, when the machines in the premises started operating, strong vibration was observed in the sheltering structure,…
