Selection of additive manufacturing processes

Purpose - This study aims to review the existing methods for additive manufacturing (AM) process selection and evaluate their suitability for design for additive manufacturing (DfAM). AM has experienced a rapid development in recent years. New technologies, machines and service bureaus are being brought into the market at an exciting rate. While user's choices are in abundance, finding the right choice can be a non-trivial task. Design/methodology/approach - AM process selection methods are reviewed based on decision theory. The authors also examine how the user's preferences and AM process performances are considered and approximated into mathematical models. The pros and cons and the limitations of these methods are discussed, and a new approach has been proposed to support the iterating process of DfAM. Findings - All current studies follow a sequential decision process and focus on an a priori articulation of preferences approach. This kind of method has limitations for the user in the early design stage to implement the DfAM process. An a posteriori articulation of preferences approach is proposed to support DfAM and an iterative design process. Originality/value - This paper reviews AM process selection methods in a new perspective. The users need to be aware of the underlying assumptions in these methods. The limitations of these methods for DfAM are discussed, and a new approach for AM process selection is proposed.