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Department of Mechanical Engineering

Prototype Development of a Device for Performing Equibiaxial Compression Tests for Material Characterization for Forming

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in
  • Massivumformung
  • Mechanik
  • Technologieentwicklung
  • Industrienahe Forschung
a) Sketch of the biaxial compression test device, b) Stress state and strain state during biaxial compression © IUL
a) Sketch of the biaxial compression test device, b) Stress state and strain state during biaxial compression
Funding BMWi
Project 03THWNW002
Contact Patrick Kotzyba M. Sc.

The overall project objective is the manufacturing and assembly, commissioning, and validation of a functional machine for performing equibiaxial compression tests for materials characterization for manufacturing technology. The mode of operation is based on the invention “Apparatus and method for performing compression tests on specimens for the characterization of materials and corresponding specimens” (AKZ: DE 102019001442), for which a patent application has been filed by the IUL. The basic operating principle is shown in Figure a. The device enables to form cube-shaped or cuboid specimens by applying a two-sided, biaxial pressure. Compared with conventional material characterization methods, such as tensile and upsetting tests, the favorable stress condition that arises when using the new machine leads to an increased formability of the inserted material specimens. This should enable the experimental recording of flow curves up to high strains.