Towards a rapid, non-contact shaping method for fibre metal laminates using a laser source

Int J Adv Manuf Technol (2010) 47:557–565

Christian Carey  Wesley J. Cantwell  Geoff Dearden  Kenneth R. Edwards

 Stuart P. Edwardson  Ken G. Watkins

Abstract: Since their initial development, fibre metal laminates (FMLs) have slowly started to be used by industry, particularly the aerospace sector. One of the reasons for the relatively slow adoption of FMLs is due to the difficulties faced in shaping them to the desired geometry. Whilst traditional processes such as roll forming are effective in shaping monolithic materials, these processes could potentially destroy the mechanical properties of the composite layer. The approached investigated here uses thermal or laser forming (LF) to shape flat panels of thermosetting glass fibre based FMLs into 2D geometries. This initial empirical investigation covers the effectiveness of the various LF processes and the effects of various parameters have on the forming process. These include laser parameters such as power and velocity and material parameters such as FML lay-up strategy, fibre orientation and comparison with monolithic materials.