Matches in SemOpenAlex for { <https://semopenalex.org/work/W4292938142> ?p ?o ?g. }
Showing items 1 to 69 of
69
with 100 items per page.
- W4292938142 abstract "Metamaterials are engineered materials with either periodic or non-periodic elements whose properties depend on the designed elements, and these properties may not be available in nature. Over the years, metamaterials have shown incredible applications in manipulating electromagnetic, acoustics, and elastic waves, such as wave focusing, bending, and cloaking by carefully engineering their physical properties (e.g., stiffness, density) or dimensions. Researchers use passive and active metamaterials. Passive designed structures are fixed and not reconfigurable or reprogrammable. On the other hand, active metamaterials can simultaneously have passive elements features and are re-programmable and tunable, leveraging the space-time modulations. So, here in this project specifically, we use piezoelectric sensors and actuators as smart elements to design new active devices. Two devices that are introduced here are (i) active baffle (ii) mechanical diode.Decrease the fluid movements in the semi-full fluid containers is one of the open researches in fluid-structure and metamaterial. Most of the researchers focus on passive elements to suppress the wave movements in the fluid. Here, the first active baffle, containing a flexible structure and a pair of piezoelectric sensor and actuator in each element, is introduced. The problem of fluid-structure vibration is viewed from several viewpoints, including analytical methods and numerical techniques. The boundary control technique is also used to control the multi-modal vibration of the fluid and structure. The simulation results for the analytical models validate the proposed controller. They indicate that the piezoelectrically-excited beam is able to suppress the vibrations of the whole fluid very effectively and quickly. Another open research that has recently become of interest is breaking reciprocity in mechanical structures and controlling the direction of wave propagation. These systems have potential applications in localizing energy and designing mechanical logic circuits. Here, we introduce the first experimental demonstration of a broadband mechanical diode, which can be reconfigured to represent wave nonreciprocity. This is achieved by using spatiotemporal stiffness modulation with piezoelectric patches in a closed-loop controller. Using a combination of analytical methods, numerical simulations, and experimental measurements, the results show that contrary to the conventional methods, this device is stable, less complicated, reconfigurable, and precise over a broad range of frequencies.--Author's abstract" @default.
- W4292938142 created "2022-08-24" @default.
- W4292938142 creator A5021757092 @default.
- W4292938142 date "2022-08-24" @default.
- W4292938142 modified "2023-10-04" @default.
- W4292938142 title "The oretical and experimental analyses of tunable active metamaterials via use of feed-forward/back controllers" @default.
- W4292938142 doi "https://doi.org/10.17760/d20429176" @default.
- W4292938142 hasPublicationYear "2022" @default.
- W4292938142 type Work @default.
- W4292938142 citedByCount "0" @default.
- W4292938142 crossrefType "dissertation" @default.
- W4292938142 hasAuthorship W4292938142A5021757092 @default.
- W4292938142 hasBestOaLocation W42929381421 @default.
- W4292938142 hasConcept C110367647 @default.
- W4292938142 hasConcept C119599485 @default.
- W4292938142 hasConcept C120665830 @default.
- W4292938142 hasConcept C121332964 @default.
- W4292938142 hasConcept C127413603 @default.
- W4292938142 hasConcept C135628077 @default.
- W4292938142 hasConcept C165165292 @default.
- W4292938142 hasConcept C171250308 @default.
- W4292938142 hasConcept C172707124 @default.
- W4292938142 hasConcept C192562407 @default.
- W4292938142 hasConcept C198394728 @default.
- W4292938142 hasConcept C24890656 @default.
- W4292938142 hasConcept C2779126057 @default.
- W4292938142 hasConcept C2779421379 @default.
- W4292938142 hasConcept C41008148 @default.
- W4292938142 hasConcept C49240428 @default.
- W4292938142 hasConcept C62973154 @default.
- W4292938142 hasConcept C66938386 @default.
- W4292938142 hasConcept C78519656 @default.
- W4292938142 hasConcept C88484716 @default.
- W4292938142 hasConceptScore W4292938142C110367647 @default.
- W4292938142 hasConceptScore W4292938142C119599485 @default.
- W4292938142 hasConceptScore W4292938142C120665830 @default.
- W4292938142 hasConceptScore W4292938142C121332964 @default.
- W4292938142 hasConceptScore W4292938142C127413603 @default.
- W4292938142 hasConceptScore W4292938142C135628077 @default.
- W4292938142 hasConceptScore W4292938142C165165292 @default.
- W4292938142 hasConceptScore W4292938142C171250308 @default.
- W4292938142 hasConceptScore W4292938142C172707124 @default.
- W4292938142 hasConceptScore W4292938142C192562407 @default.
- W4292938142 hasConceptScore W4292938142C198394728 @default.
- W4292938142 hasConceptScore W4292938142C24890656 @default.
- W4292938142 hasConceptScore W4292938142C2779126057 @default.
- W4292938142 hasConceptScore W4292938142C2779421379 @default.
- W4292938142 hasConceptScore W4292938142C41008148 @default.
- W4292938142 hasConceptScore W4292938142C49240428 @default.
- W4292938142 hasConceptScore W4292938142C62973154 @default.
- W4292938142 hasConceptScore W4292938142C66938386 @default.
- W4292938142 hasConceptScore W4292938142C78519656 @default.
- W4292938142 hasConceptScore W4292938142C88484716 @default.
- W4292938142 hasLocation W42929381421 @default.
- W4292938142 hasOpenAccess W4292938142 @default.
- W4292938142 hasPrimaryLocation W42929381421 @default.
- W4292938142 hasRelatedWork W1804162316 @default.
- W4292938142 hasRelatedWork W2004819240 @default.
- W4292938142 hasRelatedWork W2062967867 @default.
- W4292938142 hasRelatedWork W2072961329 @default.
- W4292938142 hasRelatedWork W2181241870 @default.
- W4292938142 hasRelatedWork W2545763425 @default.
- W4292938142 hasRelatedWork W2698747773 @default.
- W4292938142 hasRelatedWork W2732554736 @default.
- W4292938142 hasRelatedWork W3157197442 @default.
- W4292938142 hasRelatedWork W4292938142 @default.
- W4292938142 isParatext "false" @default.
- W4292938142 isRetracted "false" @default.
- W4292938142 workType "dissertation" @default.