| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Cacko, Robert
Warsaw University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2023A New Approach for Evaluation True Stress–Strain Curve from Tensile Specimens for DC04 Steel with Vision Measurement in the Post-Necking Phasescitations
- 2020New approach of friction AlN ceramics metallization with the initial FEM verificationcitations
- 2020Vibration asisted progresive-die micro-blanking
- 2018Determination of material distribution in heading process of small bimetallic barcitations
- 2017ULTRASONIC ASSISTED MICROFORMING
- 2017Application of Complex Micro-die for Extrusion of Micro-rivets for Micro-joining
- 2016New method for micro-clinching analysis
- 2011Influence of Micro‐Rivet Manufacturing Process on Quality of Micro‐Jointcitations
- 2010Analysis of the influence of a rivet yield stress distribution on the micro-SPR joint - initial approachcitations
- 2007Verification of numerical modeling of the SPR joint by experimental stack-up
- 2004Initial optimization of self-piercing riveting process by means of FEM
Places of action
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document
ULTRASONIC ASSISTED MICROFORMING
Abstract
Within this work an experimental set-up was designed and constructed. Itallows axial vibrations application to replaceable punches with a frequency of 20 kHz. Specially designed sonotrode allows amplification of the vibration amplitude of the piezoelectric vibrator. An unique power system allows smooth reduction of maximal amplitude within two ranges of peak to peak amplitude: 1-8 um and 30-50 um. The ultrasonic system is mounted on precision testing machine. Processes of micro-upsetting of cylindrical aluminum 1x1 mm samples were carried out in a special miro-die set. The methodology has been developed to prevent the swelling specimens from the forming area and the method of indirect amplitude control on the punching face. A 40% reduction in process power was observed with a doubling of vibration amplitude. A mechanism has been observed for the creation of multiple parallel fracture surfaces that have merged during the process so that the samples did not lose cohesion. This phenomenon was not reflected in the course of process forces. It was only possible during the structural analysis.