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Related Experiment Video

Updated: Nov 19, 2025

Fabrication of the Thermoplastic Microfluidic Channels
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Short-Term Material Characterization by Electrohydraulic Incremental Extrusion through Micro Channels.

Lasse Langstädtler1,2, Sebastian Schnabel1,2, Marius Herrmann1,2,3

  • 1Bremen Institute for Mechanical Engineering-Bime, Badgasteiner Str. 1, 28359 Bremen, Germany.

Materials (Basel, Switzerland)
|January 27, 2021
PubMed
Summary

This study introduces incremental electrohydraulic extrusion for rapid material characterization using micro samples. This novel method enables efficient mechanical testing, determining flow curve equivalents for new material development.

Keywords:
electrohydraulic forminghigh-throughputimpulse formingmaterial testingmicro massive forming

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Last Updated: Nov 19, 2025

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Manufacturing Technology

Background:

  • Conventional material mechanical testing is time-consuming and requires extensive sample preparation.
  • High-throughput material development necessitates faster, more adaptable testing procedures for micro samples.
  • Existing methods are often unsuitable for characterizing small, intricate sample geometries under specific stress conditions.

Purpose of the Study:

  • To present a novel, time-efficient method for the mechanical characterization of spherical and cylindrical micro samples.
  • To introduce incremental electrohydraulic extrusion as a viable technique for short-term material analysis.
  • To adapt and demonstrate new testing cases, including production-related and cyclic load testing, for micro samples.

Main Methods:

  • Utilizing process simulations for the design of micro channels and analysis of material flow.
  • Implementing electrohydraulic extrusion to incrementally deform micro samples through designed channels.
  • Measuring deformation in response to applied energy to derive material properties.

Main Results:

  • Successfully adapted incremental electrohydraulic extrusion for monotone tensile, compression, and torsion testing of micro samples.
  • Demonstrated the capability for production-related and cyclic load testing using the developed method.
  • Determined flow curve equivalents from measured deformation, correlating with conventional material testing data.

Conclusions:

  • Incremental electrohydraulic extrusion offers a rapid and versatile approach for micro sample mechanical characterization.
  • The developed method supports high-throughput material development by significantly reducing testing time.
  • This technique provides valuable material data comparable to traditional methods, enabling efficient new material discovery.