Details
| Original language | English |
|---|---|
| Article number | 106954 |
| Journal | Ultrasonics |
| Volume | 131 |
| Early online date | 16 Feb 2023 |
| Publication status | Published - May 2023 |
Abstract
The constantly increasing demands on components and their resource-efficient production require new strategies in modern process chains. The Collaborative Research Centre (CRC) 1153 “Tailored Forming” is working on the production of hybrid solid components made from joined semi-finished products with subsequent forming. Laser beam welding with ultrasonic assistance has proven to be advantageous in the production of semi-finished products due to the active influence on the microstructure as a result of the excitation. In this work, the feasibility of extending the monofrequency excitation of the melt pool used so far during welding to a multifrequency excitation is investigated. Results from simulations and experiments show that a multi-frequency excitation of the weld pool can be effectively realised. Furthermore, it is shown that a combination of previously separately used excitation methods (positioning of the melt pool in the vibration node and in the vibration antinode, respectively) with two different frequencies is successful and leads to a combination of effects as desired, what can be seen from micrographs.
Keywords
- Laser beam welding, Multifrequency excitation, Ultrasonic excitation
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Acoustics and Ultrasonics
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Ultrasonics, Vol. 131, 106954, 05.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Feasibility study on multifrequency excitation of the melt pool during ultrasonic-assisted laser beam welding
AU - Nowroth, Christian
AU - Grajczak, Jan
AU - Schmelt, Andreas
AU - Nothdurft, Sarah
AU - Twiefel, Jens
AU - Hermsdorf, Jörg
AU - Kaierle, Stefan
AU - Wallaschek, Jörg
N1 - Funding Information: The research project was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - CRC 1153 , subproject A3 - 252662854 . The authors would like to thank them for the support.
PY - 2023/5
Y1 - 2023/5
N2 - The constantly increasing demands on components and their resource-efficient production require new strategies in modern process chains. The Collaborative Research Centre (CRC) 1153 “Tailored Forming” is working on the production of hybrid solid components made from joined semi-finished products with subsequent forming. Laser beam welding with ultrasonic assistance has proven to be advantageous in the production of semi-finished products due to the active influence on the microstructure as a result of the excitation. In this work, the feasibility of extending the monofrequency excitation of the melt pool used so far during welding to a multifrequency excitation is investigated. Results from simulations and experiments show that a multi-frequency excitation of the weld pool can be effectively realised. Furthermore, it is shown that a combination of previously separately used excitation methods (positioning of the melt pool in the vibration node and in the vibration antinode, respectively) with two different frequencies is successful and leads to a combination of effects as desired, what can be seen from micrographs.
AB - The constantly increasing demands on components and their resource-efficient production require new strategies in modern process chains. The Collaborative Research Centre (CRC) 1153 “Tailored Forming” is working on the production of hybrid solid components made from joined semi-finished products with subsequent forming. Laser beam welding with ultrasonic assistance has proven to be advantageous in the production of semi-finished products due to the active influence on the microstructure as a result of the excitation. In this work, the feasibility of extending the monofrequency excitation of the melt pool used so far during welding to a multifrequency excitation is investigated. Results from simulations and experiments show that a multi-frequency excitation of the weld pool can be effectively realised. Furthermore, it is shown that a combination of previously separately used excitation methods (positioning of the melt pool in the vibration node and in the vibration antinode, respectively) with two different frequencies is successful and leads to a combination of effects as desired, what can be seen from micrographs.
KW - Laser beam welding
KW - Multifrequency excitation
KW - Ultrasonic excitation
UR - http://www.scopus.com/inward/record.url?scp=85148330933&partnerID=8YFLogxK
U2 - 10.1016/j.ultras.2023.106954
DO - 10.1016/j.ultras.2023.106954
M3 - Article
AN - SCOPUS:85148330933
VL - 131
JO - Ultrasonics
JF - Ultrasonics
SN - 0041-624X
M1 - 106954
ER -