Design of high performace rotary friction tooling systems for the manufacture of aero-engine components

对高质量接头的需求，加上大多数航空航天材料焊接的固有困难，促使航空航天工业研究基于固态摩擦的焊接工艺。特别是旋转摩擦焊，是一种固态摩擦焊技术，它允许通过两个组件之间的界面摩擦产生的热量和冲压施加的锻造压力将圆柱形部件焊接在一起。博士学位的目标是开发一种新的专业工具，能够解决夹具系统中的问题，以提高焊接质量。为了做到这一点，实现一个能够准确描述过程的数值模型和一个能够提取战略实验数据进行交叉比较的测量系统是至关重要的。

The need for high-quality joints, combined with the inherent difficulty in welding most aerospace materials, has fostered aerospace industry to research in solid-state friction-based welding processes. Rotary friction welding, in particular, is a solid state friction welding technique that allows to weld together cylindrical parts by means of the heat generated due to the friction at the interface between the two components and the forging pressure applied by a ram.The aim of the PhD is to develop a novel specialist tool able to solve issues in the fixturing system in order to improve the weld quality. In order to do that, it is fundamental to implement a numerical model able to describe accurately the process and a measurement system able to extract strategic experimental data for cross-comparison.