Advancements in Emerging Additive Manufacturing Techniques for Multifunctional Sustainable Technologies

A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Advanced Manufacturing".

Deadline for manuscript submissions: closed (31 July 2024) | Viewed by 2539

Special Issue Editor


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Guest Editor
School of Aerospace and Mechanical Engineering, University of Oklahoma, Norman, OK 73019, USA
Interests: smart materials; sensor development; 3D printing

Special Issue Information

Dear Colleagues,

Additive manufacturing or 3D printing has recently emerged as an advanced manufacturing technique for the computer-aided complex 3D geometry fabrication of diverse materials, with intricate macroscopic shapes and controlled microstructures. Owing to its clear advantages, this technique is receiving attention across a wide range of sectors such as the automotive industry, sensors and actuators, robotics, energy harvesting, and even biomedical applications.

Additive manufacturing offers to provide a pathway to the rapid prototyping of complex parts, without additional costs or assembly requirements for structural components in mechanical systems; printed multifunctional wearable sensors to circumvent existing barriers in measuring clinically relevant biophysical and biochemical signals in healthcare; and additively manufactured, electromechanical devices based on piezo/tribo- flexoelectricity for harvesting clean energy from renewable energy sources. Additionally, 3D-printed biomaterials have also obtained widespread usage in the manufacturing of orthopedic implants due to their light weight, simplicity, patient-specific complex topological implants, and porous structure, facilitating cell growth in tissue engineering. However, there are still many open challenges in this field that require further research and development. This Special Topic aims to showcase the latest progress in additive manufacturing-based advanced technology in multifunctional applications and provide a platform for scientists and engineers to share their new developments and insights over.

Dr. Kuntal Maity
Guest Editor

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Keywords

  • advanced technologies
  • additive manufacturing
  • advanced structures
  • sensors and actuators
  • robotics
  • clean energy
  • biomedical applications

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Published Papers (2 papers)

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Research

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20 pages, 3601 KiB  
Article
Efficient Simulation of the Laser-Based Powder Bed Fusion Process Demonstrated on Open Lattice Materials Fabrication
by Harry Psihoyos and George Lampeas
Machines 2024, 12(6), 369; https://doi.org/10.3390/machines12060369 - 24 May 2024
Viewed by 950
Abstract
Strut-based or open lattice materials are a category of advanced materials used in medical and aerospace applications due to their properties, such as high strength-to-weight ratio and energy absorption capability. The most prominent method for the fabrication of lattice materials is the Laser-based [...] Read more.
Strut-based or open lattice materials are a category of advanced materials used in medical and aerospace applications due to their properties, such as high strength-to-weight ratio and energy absorption capability. The most prominent method for the fabrication of lattice materials is the Laser-based Powder Bed Fusion (L-PBF) additive manufacturing (AM) process, due to its ability to produce parts of complex geometries. The current work presents an efficient meso-scale finite element (FE) modeling methodology of the L-PBF process demonstrated in the fabrication of body-centered cubic (BCC) lattice materials. The modeling efficiency is gained through an adaptive mesh refinement technique, which results in accurate and efficient prediction of the temperature field during the process evolution. To examine the efficiency of the modeling method, the computational time is compared with that of a conventional FE simulation, based on the element and birth technique. The temperature history difference between the two approaches is minor but the adaptive mesh modeling requires only a small portion of the simulation time of the conventional model. In addition, the computational results present a good correlation with the available experimental measurements for various process parameters validating the presented efficient method. Full article
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Review

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38 pages, 23238 KiB  
Review
Friction Stir Channeling in Heat Sink Applications: Innovative Manufacturing Approaches and Performance Evaluation
by Sooraj Patel and Amit Arora
Machines 2024, 12(7), 494; https://doi.org/10.3390/machines12070494 - 22 Jul 2024
Viewed by 1165
Abstract
The fabrication of compact heat exchangers with precisely designed micro- and mini-channels is crucial for enhancing the efficiency of thermal management systems. Friction stir channeling (FSC) emerges as a cost-effective advanced manufacturing process to create complex integral channels, offering channel shape and size [...] Read more.
The fabrication of compact heat exchangers with precisely designed micro- and mini-channels is crucial for enhancing the efficiency of thermal management systems. Friction stir channeling (FSC) emerges as a cost-effective advanced manufacturing process to create complex integral channels, offering channel shape and size flexibility. This review article highlights the pivotal role of processing parameters in channel formation and maintaining their integrity, necessitating a comprehensive understanding of material flow dynamics. A rigorous assessment has been conducted on the channel under mechanical stresses, including tension, bending, and fatigue. The paper emphasizes the potential of FSC to revolutionize heat sink applications by exploring the fundamental concepts, governing parameters, ongoing enhancements in tool design, microstructural and mechanical properties, and heat transfer performance. Full article
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