Matthias Wimmer

MTU Aero Engines · Production

The residual stress state in the sub-surface of machined components can significantly impact the properties and performance of parts, such as tribological properties, fatigue life, and dimensional distortion. The evolution of residual stresses depends on the selected process parameters and tool geometry, which affect the thermo-mechanical load impo...

The residual stress state of the machined sub-surface influences the service quality indicators of a component, such as fatigue life, tribological properties, and distortion. During machining, the radius of the cutting edge changes due to tool wear. The cutting-edge rounding significantly affects the residual stress state in the part and the occurr...

The residual stress state of the sub-surface zone is a significant influencing factor, which determines the strength, lifetime and reliability of a component after machining. A reliable adjustment of this surface characteristic during peripheral milling is currently not possible. It is desired to control the milling process using a model-based appr...

Residual stresses introduced into components in the course of manufacturing processes may considerably impair fatigue life and therefore the operational reliability and safety of the final product. Particularly in critical applications in the aerospace industry, where peripheral milling is a common surface finishing operation for components made fr...

The titanium alloy Ti-6Al-4V represents a significant metal portion of state-of-the-art aircraft structural and engine components. When critical structural components in the aerospace industry are manufactured with the objective to reach high reliability levels, surface integrity is one of the most relevant parameters used for evaluating the qualit...