Enabling Technologies for Advanced Turbine Component Life Extension

Abstract

The evolution in materials and turbine design has resulted in the parallel development of advanced equipment and processes capable of manufacturing and repairing critical engine components. Modern, vision based automated welding systems are now widely utilized for precise, low heat welding of crack sensitive alloys. Unique powder metallurgy processes such as LPM™ allow repairs to be engineered for higher localized strength or better wear properties for applications such as abrasive tips. Significant changes have also occurred in the stripping and coating processes with the introduction of sophisticated vapour-based technologies. These advanced technologies are extending opportunities for repair and life extension of turbine components, but the availability and costs associated with these enabling technologies, along with the difficulty in obtaining approvals, may restrict sources for advanced component repairs.