...Yue Zhou; Fuda Ning In this work, we developed a new additive manufacturing paradigm, coaxial wire-powder fed directed energy deposition (CWP-DED), to enable the fabrication of metals or composites with high manufacturing flexibility and efficiency. Herein, stainless steel (SS) 316L was selected...

...Hany Osman; Ahmed Azab; Mohammed Fazle Baki Hybrid manufacturing technology has enabled manufacturers to combine advantages of mainly subtractive and additive manufacturing technologies. A single machine supports producing products with complex geometry, at high quality, and with a high degree...

...Aman Nigam; Bruce L. Tai Fiber-reinforced polymer (FRP) additive manufacturing has transformed fused filament fabrication (FFF) by manufacturing products with excellent mechanical characteristics. However, the surface finish and dimensional accuracy are typically poor due to protruding fibers...

...Zipeng Guo; Fan Fei; Xuan Song; Chi Zhou Direct ink writing (DIW) process is a facile additive manufacturing technology to fabricate three-dimensional (3D) objects with various materials. Its versatility has attracted considerable interest in academia and industry in recent years...

...Zebin Li; Luis Javier Segura; Yifu Li; Chi Zhou; Hongyue Sun Inkjet printing (IJP) is one of the promising additive manufacturing techniques that yield many innovations in electronic and biomedical products. In IJP, the products are fabricated by depositing droplets on substrates, and the quality...

...Christian Zamiela; Zhipeng Jiang; Ryan Stokes; Zhenhua Tian; Anton Netchaev; Charles Dickerson; Wenmeng Tian; Linkan Bian We developed a deep fusion methodology of nondestructive in-situ thermal and ex-situ ultrasonic images for porosity detection in laser-based additive manufacturing (LBAM...

... data into identity groups. Then, a group-based learning process is designated to transfer knowledge to make target predictions. The effectiveness of the SiMuS-TL is explored with the application of porosity prediction in additively manufactured parts in realistic situations, i.e., single-source...

...Hui Yang; Joni Reijonen; Alejandro Revuelta Automated optical inspection (AOI) is increasingly advocated for in-situ quality monitoring of additive manufacturing (AM) processes. The availability of layerwise imaging data improves the information visibility during fabrication processes and is thus...

... functionally-graded additively manufactured (FGAM) parts. This paper specifically investigates the manufacture of stainless steel (SS) 316L structures via a pulsed selective laser melting (SLM) process, and the underlying causes of property variations (within a functionally-acceptable range) through various...

...Umar Farooq Ghumman; Lichao Fang; Gregory J. Wagner; Wei Chen Additive manufacturing (AM) simulations offer an alternative to expensive AM experiments to study the effects of processing conditions on granular microstructures. Existing AM simulations lack support from reliable validation techniques...

...Mohammad Saleh Kenevisi; Feng Lin Defects, such as pores and cracks, can be found in parts fabricated by powder-bed additive manufacturing techniques. The origin of certain defects, such as some voids, can be linked to initial powder quality, which makes it an important factor in the process...

...Amit Surana; Matthew E. Lynch; Abdalla R. Nassar; Greg C. Ojard; Brian A. Fisher; David Corbin; Ryan Overdorff Multi-laser powder bed fusion (M-LPBF) systems are garnering increased attention in metal additive manufacturing as they promise increased productivity and part size without sacrificing...

...Durant Fullington; Linkan Bian; Wenmeng Tian There is an urgent need for developing collaborative process-defect modeling in metal-based additive manufacturing (AM). This mainly stems from the high volume of training data needed to develop reliable machine learning models for in-situ anomaly...

...Veronica Over; Justin Donovan; Y. Lawrence Yao This work studies the use of laser shock peening (LSP) to improve back stress in additively manufactured (AM) 316L parts. Unusual hardening behavior in AM metal due to tortuous microstructure and strong texture poses additional design challenges...

... graphene nanoplatelets dynamic properties additive manufacturing advanced materials and processing Research in developing three-dimensional printable multi-materials has resulted in synthesizing unique and exotic materials or composites. Though these heterogeneous materials have fabricated many...

... resistance. Wire-arc directed energy deposition, an emerging near-net-shape manufacturing technology, faces significant challenges in printing AA7075 due to its hot cracking susceptibility. In this study, we use nano-treated AA7075 wire as feedstock to additively manufacture a crack-free deposition...

... in the current porous material manufacturing techniques is their limited control over individual pore size, connectivity, and distribution. This paper presents a novel additive manufacturing process to fabricate porosity-embedded structures by integrating stereolithography and inkjet printing using a sacrificial...

... . 10.1016/j.ijpharm.2011.04.047 [6] Hettesheimer , T. , Hirzel , S. , and Roß , H. B. , 2018 , “ Energy Savings Through Additive Manufacturing: an Analysis of Selective Laser Sintering for Automotive and Aircraft Components ,” Energy Effic. , 11 ( 5 ), pp. 1227 – 1245 . 10.1007...

... , “ Additive Manufacturing of Glass With Laser Powder Bed Fusion ,” J. Am. Ceram. Soc. , 102 ( 8 ), pp. 4410 – 4414 . 10.1111/jace.16440 [7] Marchelli , G. , Prabhakar , R. , Storti , D. , and Ganter , M. , 2011 , “ The Guide to Glass 3D Printing: Developments, Methods, Diagnostics...

... , M. , Qin , X. , Yu , J. , Suhr , J. , Byun , J. H. , Kim , B. S. , and Chou , T. W. , 2015 , “ Additive Manufacturing of Multi-Directional Preforms for Composites: Opportunities and Challenges ,” Mater. Today , 18 ( 9 ), pp. 503 – 512 . 10.1016/j.mattod.2015.05.001...