Article with material absorption cavities to reduce buckling during diffusion bonding
US5516593A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1994 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Apr 29, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12389
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An airfoil and its sub components for a gas turbine engine have a convex wall and a concave wall that are connected at leading and trailing edges. Internal supports extending from the convex and concave walls define a series of airfoil supports that have at least one primary cavity between them. Internal supports in the proximity of the edges define material absorption cavities that have a smaller cross-section than the cross section of the primary cavities. Pressure applied to the walls during the diffusion bonding process forces material inside the airfoil, and most particularly the airfoil edges, to yield towards the center of the airfoil. The material absorption cavities absorb material that yields during the diffusion bonding process and prevent buckling of the walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.