Master Thesis
In addition to the shape and pressure of the airbag, the folding is important for how well it will position and protect in a collision, as well as how much the airbag is subjected to stress and heat. The knowledge of which folds are working is good but developing and evaluating folds is a time-consuming work where usually many prototypes are manufactured, folded, tested and analyzed. Today it is seldom that folding can be implemented in a CAE model fast enough to be an effective tool for this step of airbag development as it takes around 1-2 weeks to do fold simulations of one CAE airbag. The desire is to be able to quickly and efficiently develop and evaluate folds in CAE (FE, finite elements). To make this possible, a method is needed to measure the fabric layers position inside a physical folded airbag and transfer in detail a flat CAE airbag model to the correct measured folding position, the purpose of this thesis was to produce such a method.
