Centre for Acoustic-Mechanical Microsystems
CAMM is a joint centre between DTU Construct and DTU Electro serving as a unique research platform focusing on the interaction between acoustics and mechanical engineering. The centre's mission is to strengthen the technical fundaments of the hearing aid industry by modelling, analyzing, and designing small audio systems and other miniature vibroacoustic devices.
Research in CAMM covers various aspects of mechanics, acoustics, numerical methods, as well as materials and manufacturing technology relevant for microsystems involving sound and vibration in the audible frequency range, such as hearables, hearing aids, and headsets.
The centre brings together expertise from multiple research fields in acoustic technology, solid mechanics, and manufacturing engineering. CAMM hosts multiple funded and affiliated PhD researchers as well as permanent staff coming from both DTU Construct and DTU Electro.
Research fields
Acoustic-mechanical interaction, vibrations and dynamics
- Acoustic-mechanical interaction phenomena play a key role in small acoustic devices, which requires precise determination of static and dynamic properties and behavior of advanced materials and parts. This includes nonlinear effects, contact mechanics, design optimization, and experimental testing.
Microacoustics and electroacoustic transducers
- Accurate modelling of acoustic phenomena at the milli- and micrometer scale is necessary to understand and characterize small acoustic devices. This includes the effects of thermal and viscous acoustic losses in the audible frequency range. This research is especially relevant for miniature electroacoustic transducers such as MEMS microphones and microspeakers.
Advanced optimization and modelling methods
- Advanced optimization methods such as topology and shape optimization require efficient and robust numerical analysis of the acoustic and vibrational response of small complex objects. This also considers nonlinear, dissipative, and anisotropic effects, as well as geometrical and contact nonlinearities.
Micromanufacturing, materials, and metamaterials
- Advances in micromanufacturing, process simulation, and composite materials allow high-fidelity fabrication of complex shapes and thin-walled structures with high-precision and low-tolerance replication of micrometer-sized details. Acoustic metamaterials offer unique properties to control sound and vibration in novel ways through intricate design of sub-wavelength inner structures.
The centre collaborates intensively with the Danish hearing aid industry and is currently partially sponsored by Demant (Oticon) and WS Audiology (Widex).
Contact
Frieder Lucklum Professor fluc@dtu.dk