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Metals
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High-Power Pulsed Processes for the Testing, Welding and Forming of...
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High-Power Pulsed Processes for the Testing, Welding and Forming of Metallic Materials

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 1470

Special Issue Editor

Prof. Dr. Guillaume Racineux

E-Mail Website
Guest Editor
Ecole Centrale Nantes, Research Institute in Civil Engineering and Mechanics (GeM), 1 rue de la Noë, 44321 Nantes, CEDEX 3, France
Interests: solid-state welding; high-power pulse process; magnetic pulse welding crimping and forming; electrohydraulic forming
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

High-power pulsed processes, whether via an explosion, electro-hydraulic discharge, magnetic pulse, or vaporizing foil actuators, have many advantages for diverse applications such as the welding of similar and dissimilar materials, crimping, large- and small-dimension part forming, cutting, characterization of the dynamic behavior of materials, etc. However, many locks—scientific or technological—and a lack of knowledge of these processes mean that their application in the industry remains limited.

In this Special Issue of the journal Metals, which we hope will be useful to both the industry and researchers, we plan to bring together a set of contributions that present the state-of-the-art of high-power pulsed processes. We want to place an emphasis on:

  • The presentation of the processes from both scientific and technological perspectives;
  • The presentation of the specific advantages of these processes by drawing comparisons with other technologies;
  • The presentation of original applications;
  • The presentation of scientific and technological locks.

Prof. Dr. Guillaume Racineux
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • high-power pulsed processes
  • explosion forming
  • electro-hydraulic forming
  • magnetic pulse welding
  • magnetic pulse forming
  • vaporizing foil actuators welding

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Published Papers (1 paper)

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Research

19 pages, 7812 KiB  
Article
Electrohydraulic Crimping of Tubes within Rings
by Ronan Le Mentec, Cheick Tidiane Sow, Thomas Heuzé, Patrick Rozycki and Guillaume Racineux
Metals 2023, 13(8), 1382; https://doi.org/10.3390/met13081382 - 31 Jul 2023
Cited by 1 | Viewed by 1133
Abstract
Crimping processes are commonly used in industry to join two tubular parts together. In the case of positive clearance crimping, one of the two parts must be plastically deformed to fill the initial clearance and block elastic deformations in the second one. The [...] Read more.
Crimping processes are commonly used in industry to join two tubular parts together. In the case of positive clearance crimping, one of the two parts must be plastically deformed to fill the initial clearance and block elastic deformations in the second one. The strength of the assembly will then depends on the residual contact pressure established at the interface. Quasi-static processes are the most commonly used to perform these operations, but over the past two decades, there has been a growing interest in the use of dynamic crimping by magnetic pulse. Processes that generate high-strain rate allow to reduce the springback, which is of great interest for crimping. However, its use is limited if the part to be deformed is made of a poor electrical conductor material or if its dimensions are too small. This paper presents an alternative for dynamically crimping tubes within rings using electrohydraulic process. An experimental equipment has been designed to guide and amplify pressure waves to the area to be deformed. Two amplifiers called acoustic and mechanical pulse shapers (APS and MPS) have been tested and allow to reach hoop strain rate at about 1000 and 100 s−1 respectively. An analytical model was also built allowing to define the stored energy and the inter-electrodes distance to maximize the pressure. Results of push-out tests are also presented and demonstrate the ability of the electrohydraulic crimping process coupled with the MPS to crimp small 316L tubes into rings made of the same material, but achieving crimping successfully with the APS still require further work. Full article
(This article belongs to the Special Issue High-Power Pulsed Processes for the Testing, Welding and Forming of Metallic Materials)
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