Forward and inverse modeling of the friction stir welding (FSW) process is an important endeavor, which can be used to optimize process parameters that can play a significant role on achieving specification requirements of manufactured parts. In this work a Reduced Order Modeling (ROM) approach is presented with the aim to reduce the forward step evaluation of an optimization loop that implements the solution of the relevant inverse problem. This is done in order to reduce the overall computational time required. The feasibility and efficiency of this approach is demonstrated through its implementation and the comparison between the full and the reduced order model implementations.

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