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Lecture

WEB Investigation of mechanical behavior and scalability of programmable damping approaches

Wednesday (01.01.2020)
00:45 - 01:00
Part of:


Mechanical damping can be considered a functional property of a material or a physical limitation. In both cases, the damping properties and the ability to store or to release energy determine the resulting design of technological solutions.

We study programmable damping materials which exhibit external stimuli dependent damping properties to show their potential for industrial applications. To understand this new class of materials, model systems were developed, experimentally as well as numerically studied and optimized, especially focusing on scale effects of the different solutions. Various triggers as well as their effectiveness towards modulating damping properties were tested across different material systems. The main focus of the presentation is on strain as a trigger for modulation. The presented programmable materials offer the possibility to alter the dampening properties beyond the traditional bulk properties, introducing new design spaces for technical solutions and thereby opening up the opportunity for innovative solutions addressing challenges like control of resonance frequencies, selective noise dampening and many more.

 

Speaker:
Dipl.-Ing. Michael Becker
Fraunhofer Institute for Nondestructive Testing IZFP
Additional Authors:
  • Dr. William Kaal
    Fraunhofer Institute for Structural Durability and System Reliability LBF
  • Marius Specht
    Fraunhofer Institute for Mechanics of Materials IWM