%0 journal article
%@ 0268-3768
%A Richter-Trummer, V., Koch, D., Witte, A., dos Santos, J.F., de Castro, P.M.S.T.

%D 2013
%J The International Journal of  Advanced Manufacturing Technology
%N 9-12
%P 2271-2281 
%R doi:10.1007/s00170-013-4828-x
%T Methodology for prediction of distortion of workpieces manufactured by high speed machining based on an accurate through-the-thickness residual stress determination
%U https://doi.org/10.1007/s00170-013-4828-x
9-12 
%X After high-speed machining of rolled and stretch straightened aluminium sheets, out-of-plane distortion is found. This is especially true for complex machined shapes in thin-gauge and high-strength aluminium alloys. This kind of sheets are mostly found in the aeronautical industry, where thin-weight-optimised aluminium shell designs are used for skin applications. Usually, in the aeronautical sector, low-thickness sections are used wherever possible, and higher thicknesses are used only where additional strength is required. In the present work, a methodology of predicting workpiece distortion based on the residual stress present in the workpiece is presented, which can be applied by machining companies without further investment in measurement equipment. A method for accurately determining through-the-thickness residual stresses was adapted to the special requirements of this industrial sector. The measured residual stresses were used in a finite element model capable of approximately calculating the shape distortion of simple and complex high-speed machined parts. Promising results have been obtained.