Recent advances in additive manufacturing techniques: An in-depth review

Abstract

This comprehensive review study explores the transformative potential and recent advancements in additive manufacturing (AM), a rapidly developing technology revolutionizing the manufacturing sector. The study focuses on the ability of AM to create intricate designs and complex geometries, which are not possible with traditional manufacturing methods, and its environmentally friendly nature due to reduced material waste. The study provides an in-depth analysis of the seven categories of AM processes identified by the American Society for Testing and Materials (ASTM), with a particular focus on binder jetting (BJT) and directed energy deposition (DED). These technologies are examined in terms of their working principles, advantages, disadvantages, and recent research aimed at overcoming their limitations. The study reveals that while AM offers significant benefits such as scalability, high throughput, and the ability to fabricate large-scale parts, they also present challenges such as low density and poor surface finish in the produced parts. The study concludes with a need for further research to address the limitations and enhance the applicability of AM in various industries.