Linear friction welding of Blisks has been carried out for many years by a select few jet engine manufacturers. Thompson Friction Welding will be presenting a detailed technical introduction showing how a blisk can be manufactured from constuent parts instead of using traditional mechanicla joining methods or machining from solid. Considerations will be made for the direction of oscillation, the mechanical design of the balde and disc as well as a guide to the tolling of such a complicated part. more to follow