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Investigation of micro-architected materials with unusual combinations of stiffness and damping
dc.contributor | Valdevit, Lorenzo |
dc.contributor.author | Auria Rasclosa, Borja |
dc.date.accessioned | 2012-03-14T16:52:07Z |
dc.date.available | 2012-03-14T16:52:07Z |
dc.date.issued | 2010 |
dc.identifier.uri | http://hdl.handle.net/2099.1/14752 |
dc.description.abstract | It has been known for many years that properties of individual materials can be improved by appropriately combining two materials in a composite. A stiff and a lossy material can be joined to achieve desired combinations of Young’s modulus and damping coefficient, but fundamental mechanical considerations bound the achievable combinations. These bounds can be exceeded by invoking frictional loss at the interfaces between phases or by using negative stiffness elements. In this thesis we explore both concepts. In the first part, see section 2, we develop a technique to measure the loss coefficient of a micro-architected hollow-truss based material with and without polymer cores and unveil the role of the core on damping. In the second part, see section 3, we explore the possibility of developing stable systems with tunable combinations of stiffness and damping by employing electric fields to generate negative stiffness elements. |
dc.language.iso | eng |
dc.publisher | Universitat Politècnica de Catalunya |
dc.publisher | University of California |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials |
dc.subject.lcsh | Composites -- Mechanical properties |
dc.subject.lcsh | Damping (Mechanics) |
dc.subject.lcsh | Strength of materials |
dc.title | Investigation of micro-architected materials with unusual combinations of stiffness and damping |
dc.type | Master thesis (pre-Bologna period) |
dc.subject.lemac | Materials compostos -- Propietats mecàniques |
dc.subject.lemac | Amortiment (Mecànica) |
dc.subject.lemac | Resistencia de materials |
dc.rights.access | Open Access |
dc.audience.educationlevel | Estudis de primer/segon cicle |
dc.audience.mediator | Escola Tècnica Superior d'Enginyeria Industrial de Barcelona |
dc.audience.degree | ENGINYERIA INDUSTRIAL (Pla 1994) |
dc.description.mobility | Outgoing |