Power Ultrasonics
Jun.-Prof. Dr. -Ing. Moritz Liesegang
Materials science issues relating to the joining of material composites and material modification using power ultrasound are investigated in a fundamental and application-orientated manner. The mechanical behaviour of ultrasonically welded composites under load is characterised experimentally and simulatively in combination with digital twins. With regard to material modification, phenomena that are observed during and after stimulation by power ultrasound, such as particularly pronounced plastic deformation or microstructural changes, are investigated.
The range of materials currently being investigated includes metals, glasses, ceramics, magnetic materials and polymer composites.
Development of durable sonotrode concepts for ultrasonic welding of Ti alloys by designing efficient structures of the sonotrode coupling surface (DFG)
Correlation between bond strengths and interface characteristics of ultrasonically welded multi-material composites for the development of finite element models
Identification and quantification of microstructural changes in metals by stimulation with power ultrasound in correlation to plastic deformations
Development work on processes based on power ultrasound with application relevance: processes and sonotrodes, characterisation and simulation of composite properties