Portal de Periódicos da CAPES

Fundamentals of the Deep Rolling of Compressor Blades for Turbo Aircraft Engines

2005; Wiley; Volume: 76; Issue: 2-3 Linguagem: Inglês

10.1002/srin.200506001

1869-344X

Fritz Klocke, Sebastian Mäder,

Metallurgy and Material Forming

The weakening of the fatigue strength of turbine blades due to local impact damage caused by foreign objects (Foreign Object Damage ‐ FOD) represents a significant safety risk in modern civil and military aviation. It is possible to employ deep rolling to counteract such component weakening in a particularly effective way. Although deep rolling has long been used on rotationally symmetric components, the underlying deformation processes are largely unknown. The deep rolling of thin‐walled free‐form surfaces, such as those on turbine blades, represents a new, demanding production challenge. For this reason, this paper describes the implementation of a deep‐rolling process for machining thin‐walled turbine blades and, by combining practical and numerical test results, outlines some of the underlying deformation processes.