Structure-structure Coupling by Liquids: Vibration Measurements on a Rotating Disk with Self-tracking LDV.

Autor: Weder, Mario, Horisberger, Beat, Monette, Christine, Dual, Jürg
Předmět:
Zdroj: AIP Conference Proceedings; 2016, Vol. 1740 Issue 1, p1-5, 5p, 3 Diagrams, 2 Graphs
Abstrakt: We present an experimental setup to investigate the structure-structure coupling of a stationary and a rotating disk coupled by an intermediate liquid. This coupling mechanism is particularly important in the mechanical design of Francis turbines, where the vibration of the turbine runner is coupled with the adjacent non-rotating structure. The vibration of the disks is measured using laser Doppler velocimetry (LDV). Whereas we could use a standard scanning LDV system to measure the stationary disk, we had to design and implement a polar scan unit based on the self-tracking LDV method. Here we show the design concept of the setup with a closer look on the self-tracking LDV system as well as selected results of the coupled vibration. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index