Synthesizing non-reciprocal structures, i.e. structures that can feature unidirectional invisibility, is of considerable importance for various applications, e.g. in acoustics, naval, building industry, etc. Materials and structures featuring unidirectional invisibility are particularly relevant to realize one-way filters and isolation. Several innovative ideas on how to synthesize such structures have been recently proposed, e.g. utilizing coupled spatial-temporal modulations of structural parameters or/and non-uniformly distributed damping or/and nonlinearity. The present project implies manufacturing a model non-reciprocal structure by using piezo materials.
Employing electro-mechanical coupling induced by these materials, it is possible to generate non-uniformly distributed damping in the structure or coupled spatial-temporal modulations of its structural stiffness. Dynamic performances of the structure will be tested using conventional experimental techniques, e.g. by measuring impact responses, etc.
Undergraduate
Manufactured model non-reciprocal structure.
Results of the theoretical and experimental testing of the structure.
Basic knowledge of electric circuits and dynamics and vibration theory.
Some experience with experimental testing of electromechanical systems is advantageous.
Mechatronics PG + Dynamics and Control Lab (201.562, Lab)