Journal ArticleDOI
Use of Friction Surfacing for Additive Manufacturing
TLDR
In this paper, sound multi-layered deposits in various ferrous materials were realized using friction surfacing in both single-and multi-track approaches, and samples with fully enclosed internal cavities were also successfully produced.Abstract:
In this work, we explore the possibility of utilizing friction surfacing, an emerging solid-state surface coating process, for layer-by-layer manufacture of three-dimensional metallic parts. One possibility in this regard (single-track friction surfacing) is to utilize friction surfacing for depositing a track or layer of material (sufficiently wide to cover the entire layer area), which is subsequently shaped to its corresponding slice counter using CNC machining. Another possibility (multi-track friction surfacing) is to generate a layer from multiple overlapping tracks of friction surfaced material, which is subsequently shaped as required using CNC machining. In the current work, sound multi-layered deposits in various ferrous materials were realized using friction surfacing in both single- and multi-track approaches. Samples with fully enclosed internal cavities and those consisting of different materials in different layers were also successfully produced. The deposits showed fine-grain wrought micr...read more
Citations
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Journal ArticleDOI
Experimentally established correlation of friction surfacing process temperature and deposit geometry
TL;DR: In this paper, a detailed experimental study of the process temperatures during friction surfacing of dissimilar aluminum alloys is performed, and the process temperature profiles for varied process parameters, i.e. axial force, rotational speed and travel speed as well as process environment, are investigated.
Journal ArticleDOI
Evaluation of service life of silicone rubber molds using vacuum casting
Chil-Chyuan Kuo,Min-Xiang Wu +1 more
TL;DR: In this article, the service life of silicone rubber molds was investigated using both wax injection molding and vacuum casting and the experimental results revealed that the average roughness of the inner surface of the silicone rubber mold were increased with increasing the number of test runs and saturated after 25 test runs.
Journal ArticleDOI
Microstructures and Properties of Friction Freeform Fabricated Borated Stainless Steel
J.J.S. Dilip,G.D. Janaki Ram +1 more
TL;DR: In this article, a new additive manufacturing process, termed "friction freeform fabrication," has been recently proposed, which can facilitate fabrication of three-dimensional parts in materials that are difficult to fusion deposit.
Journal ArticleDOI
Friction surfacing of AISI 316 over mild steel: A characteriation study
TL;DR: In this paper, an attempt has been made with overlaying of stainless steel on mild steel by the technique of friction surfacing, and it has been observed that the bond strength of the coating was found to be at a maximum of 502 MPa by ram tensile test.
Journal ArticleDOI
Monitoring and repair of defects in ultrasonic additive manufacturing
Venkata Karthik Nadimpalli,Venkata Karthik Nadimpalli,G. M. Karthik,G. M. Karthik,G. D. Janakiram,Peter B. Nagy +5 more
TL;DR: In this paper, an ultrasonic NDE is used to monitor the evolution of type 1 defects in a UAM component divided into two zones, the first representing the base/build interface comprising of the first few layers on the base substrate, and the second region represents the bulk of the UAM stack.
References
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Book
Additive Manufacturing Technologies: Rapid Prototyping to Direct Digital Manufacturing
TL;DR: Gibson et al. as discussed by the authors presented a comprehensive overview of additive manufacturing technologies plus descriptions of support technologies like software systems and post-processing approaches, and provided systematic solutions for process selection and design for AM Additive Manufacturing Technologies: Rapid Prototyping to Direct Digital Manufacturing.
Transactions of the Indian Institute of Metals
TL;DR: The Indian Institute of Metals is devoted to the publication of selected reviews on contemporary topics and original research articles that contribute to the advancement of ferrous and non-ferrous process metallurgy.
Journal ArticleDOI
On the thermo-mechanical events during friction surfacing of high speed steels
TL;DR: In this paper, the authors describe the events that the matrix and carbides experience as the coating material pass from the coating rod to the substrate, in forming the coating, and the coating is observed to harden automatically within a few seconds of being deposited onto the cold substrate.
Patent
Object consolidation employing friction joining
TL;DR: In this paper, friction heating and bonding are used to consolidate sequentially applied metals, plastics or composites to previously deposited material so as to form a bulk deposit in a desired shape.