Journal of Materials Research and Technology · 2015 · 63 citations · 21 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsMaterials CharacterizationCeramic CompositesComposite MaterialsDynamic Mechanical AnalysisMechanical CharacterizationMechanical PropertiesMechanics Of Composite MaterialsDislocation DensityDynamic Mechanical CharacterizationDynamic Mechanical PropertiesExperimental CharacterizationHybrid CompositesMaterial DampingMicrostructural CharacterizationThermal Mismatch
In the present study, the damping behavior of hybrid composites has been investigated using dynamic mechanical analyzer (DMA). The composites were fabricated with 2, 4, 6, and 8% by weight of rice husk ash (RHA) and SiC in equal proportions using two stage stir casting process. Damping measurements of all the specimens were obtained by dynamic mechanical analyzer (DMA) at different frequencies in air atmosphere. Scanning electron microscope (model JSM-6610LV) was used to study the microstructural characterization of the hybrid composites. It was observed that the dislocation density , which results from the thermal mismatch between the reinforcement and the matrix and the porosity of composites, has a great influence on the damping capacity of hybrid composites. The dislocation damping mechanisms were discussed with regards to the Granato–Lucke theory.
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Kenneth Kanayo Alaneme, Idris Babatunde Akintunde, Peter Apata Olubambi et al. · Journal of Materials Research and Technology · 2013 · 240 citations · Full text
Natural Sciences, Materials Engineering, Materials Science +17