... the machine compliance for the determination of the CNTY’s elastic modulus is highlighted, since the error can reach up to 28%. Dynamic mechanical analysis shows that the CNTY is a stiff material with an extraordinary high damping ratio, which increases with temperature and reaches ∼0.6 at 60 °C. In addition...

... and vibrational energies. elastic moduli filled polymers inclusions micromechanics numerical analysis viscoelasticity micromechanics damping multicoating inhomogeneities negative stiffness Applications requiring materials with high capacity to absorb acoustic and vibrational energies can...

...Jason McCormick; Reginald DesRoches; Davide Fugazza; Ferdinando Auricchio Superelastic NiTi shape memory alloy (SMA) wires and bars are studied to determine their damping and recentering capability for applications in the structural control of buildings subjected to earthquake loadings...

... coupled with a thermal balance equation. Hence, it considers mechanical dissipation as well as latent heat and includes the temperature as a primary independent variable, which is responsible of the dynamic effects. The ability of both models to reproduce the observed reduction of damping properties...

... a major role introducing tall damping peaks associated with Snoek-type and H-twin boundary relaxations. Levels of Q − 1 as high as 0.08 have been detected, which are among the highest to date measured in metal alloy systems. For appropriate alloy compositions, these peaks occur at around room temperature...

... due to the cycling. By introducing the thermodynamic first principle, a study of the heat equation is developed in order to predict the temperature evolution during a cyclic tensile test. Furthermore, in order to model the damping effect created by the hysteresis phenomenon and the stiffness variation...

...C. Remillat; M. R. Hassan; F. Scarpa This work illustrates viscoelastic testing and fractional derivative modelling to describe the thermally induced transformation equivalent viscoelastic damping of NiTiCu SMA ribbons. NiTiCu SMA ribbons have been recently evaluated to manufacture novel honeycombs...

...Narasimalu Srikanth; Manoj Gupta Metallic material with enhanced stiffness and damping characteristics is actively sought in the design of dynamic mechanical systems for mechanical components. Germanium is known to remain distinct in an aluminium matrix without forming any intermetallic phases...

...R. S. Lakes; S. Kose; H. Bahia Concentrated suspensions of inclusions occur in asphalt and dental composite resins. Concentrated suspensions are also of use in achieving a combination of high stiffness and loss (the product E tan δ), desirable in damping layer and structural damping applications...

...Eduard R. Oberaigner; Franz D. Fischer; Kikuaki Tanaka Vibration damping through phase transformation is one major area of application of shape memory alloys in smart systems and structures. The authors of this study have shown in earlier publications, how damping of vibrating rods can...

...Ronald F. Gibson, Fellow ASME; Yu Chen; Hui Zhao It is shown that, under certain conditions, simultaneous improvement of vibration damping capacity and interlaminar fracture toughness in composite laminates can be achieved by using polymeric interleaves between the composite laminae. The specific...