Topic
Loss factor
About: Loss factor is a research topic. Over the lifetime, 821 publications have been published within this topic receiving 11150 citations.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: In this article, a quantitative analysis of the damping effectiveness of a constrained layer of damping tape is presented, where the loss factor η is defined as the normalized imaginary part of the complex bending stiffness of the damped plate.
Abstract: For a number of years it has been known that flexural vibrations in a plate can be damped by the application of a layer of damping (viscoelastic) material that is in turn constrained by a backing layer or foil. A common example is the damping tape currently used in aircraft.This paper presents a quantitative analysis of the damping effectiveness of such a constrained layer. As in the work of H. Oberst the damping is characterized by the loss factor η, which is the normalized imaginary part of the complex bending stiffness of the damped plate.The calculated damping factor depends on the wavelength of bending waves in the damped plate, and on the thicknesses and elastic moduli of the plate, the damping layer, and the constraining layer. A complex shear modulus is assigned to the damping layer, where all of the energy dissipation is assumed to take place.Damping factors have been determined experimentally on laboratory test bars for a number of constrained‐damping‐layer applications for frequencies from abou...
761 citations
TL;DR: In this paper, a version of the fractional derivative models characterized by five parameters is presented and investigated in order to describe asymmetrical loss factor peak and the high-frequency behaviour of polymeric damping materials.
277 citations
TL;DR: In this article, inversion of the linear power balance equations is used to determine the plate loss factors and the coupling loss factors in situ, and good agreement is obtained between the predicted and measured coupling loss factor and between the in situ loss factor, for each plate separately also in steady state from power injection measurements.
220 citations
TL;DR: In this paper, the effects of frequency and strain amplitude as well as temperature on the damping behavior of superelastic NiTi shape memory alloy wires were investigated. And the dissipated energy and the loss factor were analyzed.
186 citations
TL;DR: In this article, the authors used the differential equation for the damped normal modes of a three-layer encastre sandwich beam, in conjunction with appropriate boundary conditions, to determine the characteristic equation for resonant frequency, loss factor and modal roots.
150 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 6 |
| 2024 | 11 |
| 2023 | 32 |
| 2022 | 86 |
| 2021 | 27 |
| 2020 | 26 |