| 摘要 |
<p>A vibration damper for use with hollow turbine blades is provided. The damper is formed from a tube of deformable material 1 which can be located within a hollow cavity. The tube 1 is at least longitudinally slotted to define a deformation profile comprising a number of cuts or grooves 2, 2a in the tube 1. The tube 1 is then placed upon an expandable element and inserted into a cavity in a hollow turbine blade whereupon the expandable element expands the tube 1 to frictionally retain the tube 1 within the hollow cavity. The expandable element is then retracted from the tube 1 whereby the deformation profile is defined to provide through differential movement in the hollow cavity a desired level of vibration damping by frictional engagement with part of the hollow cavity.</p> |
