Results 81 to 90 of about 27,449 (284)

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Optimization of Laser Powder Bed Fusion Processing Using a Combination of Melt Pool Modeling and Design of Experiment Approaches: Density Control

Journal of Manufacturing and Materials Processing, 2019
A simplified analytical model of the laser powder bed fusion (LPBF) process was used to develop a novel density prediction approach that can be adapted for any given powder feedstock and LPBF system.
Morgan Letenneur, Alena Kreitcberg, Vladimir Brailovski   +2 more
doaj   +1 more source

Computational analysis of the effects of geometric irregularities and post-processing steps on the mechanical behavior of additively manufactured 316L stainless steel stents.

PLoS ONE, 2020
Advances in additive manufacturing enable the production of tailored lattice structures and thus, in principle, coronary stents. This study investigates the effects of process-related irregularities, heat and surface treatment on the morphology ...
Lisa Wiesent, Ulrich Schultheiß, Philipp Lulla, Ulf Noster, Thomas Schratzenstaller, Christof Schmid, Aida Nonn, Ashley Spear   +7 more
doaj   +1 more source

In-situ sensing, process monitoring and machine control in Laser Powder Bed Fusion: A review

, 2021
Process monitoring and sensing is widely used across many industries for quality assurance, and for increasing machine uptime and reliability. Though still in the emergent stages, process monitoring is beginning to see strong adoption in the additive ...
R. McCann, M. Obeidi, Cian Hughes, É. McCarthy, D. Egan, R. K. Vijayaraghavan, Ajey Joshi, Víctor Acinas Garzón, D. Dowling, P. McNally, D. Brabazon   +10 more
semanticscholar   +1 more source

Tomography of Laser Powder Bed Fusion Maraging Steel

Materials
The presence of defects in additive manufactured maraging steel is a widespread problem as its dependence on processing parameters significantly influences it. Using X-ray computed tomography, along with optical microscope data limited to 2D images, quantifies the internal porosity present on a compact tension sample typically employed in fatigue ...
Pablo M. Cerezo, Jose A. Aguilera, Antonio Garcia-Gonzalez, Pablo Lopez-Crespo   +3 more
openaire   +4 more sources

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

A Review of a Versatile Powder Bed Fusion Technique and Selective Laser Sintering for Orthopedic and Biotechnology Applications [PDF]

Iranian Journal of Chemistry & Chemical Engineering
The field of Additive Manufacturing (AM), also known as 3D printing, has experienced rapid advancements, revolutionizing traditional approaches to object design and production. This innovative process entails the layer-by-layer deposition of materials in
Yafei Dou, Bahareh Kamyab Moghadas, Geng Ma, Chendi Du, Negin Ghanbari, Ali Mokhtarian   +5 more
doaj   +1 more source

Dry powder coating in additive manufacturing

Frontiers in Chemical Engineering, 2022
Dry powder coating is used in many industries to tailor the bulk solid characteristics of cohesive powders. Within this paper, the state of the art of dry coating of feedstock materials for powder based additive manufacturing (AM) processes will be ...
Jochen Schmidt, Jochen Schmidt, Wolfgang Peukert, Wolfgang Peukert   +3 more
doaj   +1 more source

Influence of scale effect on surface morphology in laser powder bed fusion technology

Virtual and Physical Prototyping
Laser powder bed fusion (LPBF) of multi-scaled structures is a prominent direction pursued by innovative designs and engineering applications. However, understanding the impact of scale effect on the effectiveness of actual structures is a pressing ...
Zhe Feng, Geng Wang, Zhiwei Hao, Yongxia Wang, Hua Tan, Wei Fan, M.J. Dang, Siyu Zhang, Yuguang Chen, Yijie Peng, Tianchi Zhang, S. Shi, Lei Wei, Fengying Zhang, Xin Lin, Weidong Huang   +15 more
semanticscholar   +1 more source

Pitting Corrosion in 316L Stainless Steel Fabricated by Laser Powder Bed Fusion Additive Manufacturing: A Review and Perspective

JOM, 2022
316L stainless steel (316L SS) is a flagship material for structural applications in corrosive environments, having been extensively studied for decades for its favorable balance between mechanical and corrosion properties.
T. Voisin, R. Shi, Y. Zhu, Q. Z., W. M., S. Sen-Britain, Y. Zhang, S. Qiu, Y. M. Wang, S. Thomas, B. Wood   +10 more
semanticscholar   +1 more source