R
Raghunandan Ummethala
Researcher at Tallinn University of Technology
Publications - 18
Citations - 449
Raghunandan Ummethala is an academic researcher from Tallinn University of Technology. The author has contributed to research in topics: Carbon nanotube & Microstructure. The author has an hindex of 10, co-authored 17 publications receiving 231 citations. Previous affiliations of Raghunandan Ummethala include Indian Institute of Technology Kanpur & National Institute of Technology, Warangal.
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Journal ArticleDOI
Selective laser manufacturing of Ti-based alloys and composites: impact of process parameters, application trends, and future prospects
Neera Singh,Pearlin Hameed,Raghunandan Ummethala,Geetha Manivasagam,Konda Gokuldoss Prashanth,Jürgen Eckert +5 more
TL;DR: In this article, critical aspects for the optimization of processing parameters affecting the properties of SLM manufactured Ti alloys and titanium matrix composites are presented, and future prospects of such materials will be critically assessed.
Journal ArticleDOI
Lightweight, free-standing 3D interconnected carbon nanotube foam as a flexible sulfur host for high performance lithium-sulfur battery cathodes
Raghunandan Ummethala,Martin Fritzsche,Tony Jaumann,Juan Balach,Juan Balach,Steffen Oswald,Rafal Nowak,Natalia Sobczak,Ivan Kaban,Mark H. Rümmeli,Mark H. Rümmeli,Mark H. Rümmeli,Lars Giebeler +12 more
TL;DR: In this paper, a free-standing, mechanically flexible, binder-free 3D interconnected carbon nanotube "foam" (CNTF) is prepared by a single-step facile method and used as a sulfur host in LiS batteries.
Journal ArticleDOI
Selective Laser Melting of Aluminum and Its Alloys.
Zhi Wang,Raghunandan Ummethala,Neera Singh,Shengyang Tang,C. Suryanarayana,Jürgen Eckert,Jürgen Eckert,Konda Gokuldoss Prashanth,Konda Gokuldoss Prashanth,Konda Gokuldoss Prashanth +9 more
TL;DR: The present review attempts to introduce the SLM process followed by a detailed discussion about the processing parameters that form the core of the alloy development process, which is followed by the current research status on the processing of Al-based alloys and microstructure evaluation (including defects, internal stresses, etc.), which are dealt with on the basis of individual Al- based series.
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Selective laser melting of high-strength, low-modulus Ti–35Nb–7Zr–5Ta alloy
Raghunandan Ummethala,Phani Karamched,Sokkalingam Rathinavelu,Neera Singh,Akash Aggarwal,Kang Sun,Eugene Ivanov,Lauri Kollo,I.V. Okulov,I.V. Okulov,Jürgen Eckert,Jürgen Eckert,Konda Gokuldoss Prashanth,Konda Gokuldoss Prashanth,Konda Gokuldoss Prashanth +14 more
TL;DR: In this paper, a low modulus β-Ti alloy, Ti-35Nb-7Zr-5Ta (TNZT), was fabricated by selective laser melting (SLM) with optimized laser parameters.
Journal ArticleDOI
Application of Carbon Nanotubes Directly Grown on Aluminum Foils as Electric Double Layer Capacitor Electrodes
Vyacheslav O. Khavrus,M. Weiser,Marco Fritsch,Raghunandan Ummethala,Maria Grazia Salvaggio,Michael Schneider,Mihails Kusnezoff,Albrecht Leonhardt +7 more
TL;DR: In this article, the surface topography of the Al foil is found to be a governing factor for the growth of CNTs, their alignment, and adhesion to the current collector.