Inorganic multi-phase microstructures for damping mechanical vibrations in metal components

The system developed for damping mechanical vibrations is based on the possibility of modulating an inorganic polymeric matrix giving rise to complex and discontinuous multi-phase microstructures.

Title of the patent Sistema per lo smorzamento delle vibrazioni meccaniche
Thematic area Mechanical, civil and environmental engineering
Ownership Alma Mater Studiorum - Università di Bologna, Consiglio Nazionale delle Ricerche
Inventors Angelo Casagrande, Giuseppe Catania, Elena Landi, Valentina Medri, Elettra Papa
Protection Italy
Licensing status Available for licensing agreement
Keywords Damping, coating, inorganic polymer
Filed on Feb 13, 2019

The materials used to date for vibration damping are mainly metal alloys, organic polymers and rubbers. Metal alloys generally have high rigidity and strength values with associated low vibration damping levels. Organic polymers and rubbers, on the other hand, have a higher viscoelastic behavior than metallic materials and would therefore be preferable due to the ability to dampen passive vibrations. The disadvantage however in the use of the latter results in a poor adhesion capacity. This characteristic makes it difficult to use as a coating of a metal material in most of the possible applicative embodiments which require high values of adhesion and resistance, both thermal and mechanical. These properties, on the other hand, are inherent and modular in composites with a multi-phase structure and complex products with an inorganic polymeric matrix.

Materiale innovativo per incrementare lo smorzamento vibrazionale meccanico in esercizio e la dissipazione energetica di componenti di organi meccanici impiegati nella trasmissione di potenza.


- Increase of the vibrational damping of the component without altering the mechanical properties of the component

- Increased performance

- Process achievable with equipment and technologies that are easily available on an industrial level.

- increase in the duration of the exercise

- noise reduction

- energy saving


- automotive

- aerospace

- industrial automation