| 摘要 |
A component such as a blade for use in a gas turbine engine comprises outer panels 2, 4 defining an internal cavity 10 within which a warren girder structure 6 is provided. At least one damping strip 12 is provided in the cavity 10 and secured to one of the panels 2, 4 or to the warren girder structure 6. Each damping strip is secured to the respective surface at one end, for example adjacent the root of the blade, and makes frictional contact with the respective part over the remainder of its length. Vibration induced in the blade causes relative movement between the body of the blade and the damping strip, the resulting frictional resistance causing energy loss which damps the vibration. The components may be secured together by a diffusion bonding process. |
