Abstract

Research projects have been taken up on additive manufacturing (AM) technology and has been getting developed for more than 25 years, but without removing or replacing materials, AM processes are useful to produce 3D parts directly from CAD models by joining materials layer by layer which offers beneficial ability to build parts with geometric and material complexities that could not be formed by subtractive manufacturing processes. Through intensive research over the past two decades, significant progress has been achieved in the development and commercialization of new and innovative AM processes, and the applications in automotive, energy sectors, aerospace, biomedical, and other fields as well. This paper reviews the main processes, materials and applications of the current AM technology.

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