Manfred Kaltenbacher is Professor of Measurement and Actuator Technology at TU Graz, Austria, where he also served as Head of the Institute of Fundamentals and Theory of Electrical Engineering. His main research interests are advanced finite element methods for multi-physics (magneto-mechanics, vibro- and aero-acoustics, and piezoelectrics) and combined experimental and simulation-based methods for material parameter determination (magnetics, acoustics, piezoelectrics). He serves as Editor-in-Chief of Acta Acustica, and member of the editorial advisory board of Acta Mechanica. He is a member of the Austrian Academy of Sciences, the IEEE Society, the AIAA Society, and the European Acoustics Association. Astrid Pechstein is Associate Professor at the Institute of Technical Mechanics in the Mechatronics Department at JKU Linz, Austria. She is member of the editorial advisory board of Acta Mechanica journal. Her main interests lie in interdisciplinary research, where she tries to combine theoretical results from computational mathematics with problem-specific approaches from mechanical engineering. Her focus is on the derivation of novel finite element methods.