A review of wire arc additive manufacturing
Development, principles, process physics, implementation and current status
John Norrish (University of Wollongong)
Joseph Polden (University of Wollongong)
IM Richardson (TU Delft - Team Marcel Hermans)
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Abstract
Additive manufacturing (AM) is now recognised as a viable alternative to processes such as casting, forging, and subtractive technologies such as machining. Wire arc additive manufacturing (WAAM) has emerged as a cost-effective AM approach for component fabrication and a considerable body of literature on the subject has become available over the last 30 years. This review references the published work in a critical manner. It traces the development of WAAM, the principles of operation, materials considerations, process options, process physics, numerical simulation, process control, the current status and future research needs.