✍ Scribed by Gareth Thomson; Mark Pridham
No coin nor oath required. For personal study only.
Laser forming is a process that uses the energy of relatively high powered lasers to cause permanent deformation to components by inducing localised thermal stresses. It is envisaged that this material processing technique will ®nd a number of commercial applications. This paper brie¯y discusses laser forming and the development of a basic process monitoring and control system used to overcome variability problems due to the complex nature of the lasers themselves and the manner in which they interact with material. It then goes on to show how the basic control system was modi®ed, using increased feedback data sampling, time delays and a modi®ed control algorithm which takes account of the forming rate in addition to the error. The eect of these developments is then illustrated by a series of tests which show the modi®cations signi®cantly improve process tolerances.
📜 SIMILAR VOLUMES