IDDRG 2023
Impressions from IDDRG 2023 in Luleå, Sweden.
The future of sheet metal testing at IDDRG 2023. Fossil-free steel, sustainable/advanced/smart materials, multi-material concepts/solutions, forming/formability, lightweight structures, digital transformation, digitalization, smart plants, smart presshops, cold and hot forming and trimming (incl. single and multi-step forming), tribology, simulations (incl. material models, topology optimization, tribology, springback compensation, and geometry assurance), testing, testbeds, springback, shape accuracy, geometry assurance, surface quality, tools and dies, and additive manufacturing were the topics of this conference.
Transmission-Illumination-Based Crack Detection
- Crack detection system compatible with ERICHSEN sheet metal testing machines
- Optimal for crack detection in thin sheets < 0.1 mm and soft materials, max. allowable strength of sheet metal: 2000 MPa at 0.05 mm, 1000 MPa at 0.1 mm and 500 MPa at 0.2 mm
- Ball punch made from translucent alumina-based ceramics
- Light of luminous punch shining through crack
- Camera with magnetic mount used for crack detection
- Contact-free on-off switch
- External charging station
Bulge-/ FLC-Tester Model 161
The Model 161 bulge/FLC tester is an electro-hydraulic testing machine that is used to carry out hydraulic cupping tests on all ferrous and non-ferrous metals. Samples up to 400 x 650 mm in size can be tested. In addition to the actual hydraulic forming, its construction also enables it to be used with ball stamps (FLC) of any diameter from 100 to 199 mm.
Hot Forming Solutions
To determine also Forming Limited Diagrams at higher temperatures, the temperature accessory for ERICHSEN Sheet metal testing machines Mod. 142-40, Mod. 145 and Mod. 146 is the appropriate solution. Tests according Nakajima- and Marziniak can be performed in order to evaluate FLC / FLD. This accessory will be assembled directly into the test cylinder. The complete tool is heated to the desired temperature (up to 700 °C) together with the test specimen, and then the deformation will be performed.
By using a cooling connection the casing of the device can be cooled, thus the thermal load on the environment is minimized. The corresponding electronic control units are placed in a separate cabinet. The opening in the test head of the hot-drawing device is manufactured, that optical 3D measurement systems can document and evaluate the deforming process.
- Heating the sample directly inside the tool
- No external heating device necessary
- Heating the tools
- Perfect heat distribution
- Visible range for optical 3D evaluation systems (FLC/FLD)