Results 1 to 10 of about 35,679 (298)
Applied Sciences, 2018 Due to the difficulty of obtaining relaxation modulus directly from experiments, many interconversion methods from other viscoelastic functions to relaxation modulus were developed in previous years.
Weiguang Zhang +3 more
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New normalized constant modulus algorithms with relaxation [PDF]
IEEE Signal Processing Letters, 1997 A new normalized constant modulus algorithm is proposed that has a more desirable error performance surface (EPS) than the existing constant modulus blind equalization algorithms. We show that for an autoregressive channel, a well-known class of undesirable local solutions (ULSs) does not exist.
Tanrikulu, O +2 more
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Simulation of relaxation time and storage modulus for carbon nanotubes-based nanocomposites
Journal of Materials Research and Technology, 2021 This paper develops two equations for relaxation time and storage modulus of biopolymer nanocomposites at unlike frequency ranges. The relaxation time is correlated to zero complex viscosity, yield stress, K constant and power-law index. In addition, the
Yasser Zare, Kyong Yop Rhee
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Structural Relaxation Monitored by Instantaneous Shear Modulus [PDF]
Physical Review Letters, 1998 This paper reports on aging of the silicone oil MS704 for sudden changes of temperature from 210.5 to 209.0 K and from 207.5 to 209.0 K studied by continuously monitoring the instantaneous shear modulus G‘. The results are interpreted within the Tool-Narayanaswamy formalism with a reduced time definition based on a recently proposed expression for the ...
Olsen, Niels Boye +2 more
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Constant Modulus Shaped Beam Synthesis via Convex Relaxation [PDF]
IEEE Antennas and Wireless Propagation Letters, 2017 Constant modulus shaped beam synthesis is widely employed in multiple-input–multiple-output (MIMO) radar systems and MIMO wireless communication systems to improve the effective power gain by using only phase adjustment. To achieve the maximum beam gain, we formulate a new optimization problem to maximize the main lobe gain and also properly suppress ...
Cao, Pan, Thompson, John, Haas, Harald
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Measurement of Relaxation Modulus of Viscoelastic Materials and Design of Testing Device
Applied Sciences, 2023 Viscoelastic parameters of viscoelastic materials should be measured to ensure their effective use. Unfortunately, devices for effective and accurate measurement of the relaxation modulus of materials are not currently available.
Lunlun Wan, Fuyan Lin
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Relaxation of the bulk modulus in partially molten dunite? [PDF]
Geophysical Research Letters, 2016 AbstractTo address the possibility of melt‐related bulk modulus relaxation, a forced oscillation experiment was conducted at seismic frequencies on a partially molten synthetic dunite specimen (melt fraction = 0.026) utilizing the enhanced capacity of the Australian National University attenuation apparatus to operate in both torsional and flexural ...
C. J. Cline, I. Jackson
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An Elementary Formula for the Initial Relaxation Modulus from the Creep Compliance for Asphalt Mixtures. [PDF]
Materials (Basel), 2023 The conversion between the relaxation modulus and creep compliance is a traditional research topic in viscoelastic materials. Generally, different methods have been used to solve the numerical solution based on convolution theory.
Chen S, Chen B, Wu X, Zhou J.
europepmc +2 more sources
Numerical Conversion Method for the Dynamic Storage Modulus and Relaxation Modulus of Hydroxy-Terminated Polybutadiene (HTPB) Propellants. [PDF]
Polymers (Basel), 2022 As a typical viscoelastic material, solid propellants have a large difference in mechanical properties under static and dynamic loading. This variability is manifested in the difference in values of the relaxation modulus and dynamic modulus, which serve
Ji Y, Cao L, Li Z, Chen G, Cao P, Liu T.
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Two Integral Representations for the Relaxation Modulus of the Generalized Fractional Zener Model
Fractal and Fractional, 2023 A class of generalized fractional Zener-type viscoelastic models with general fractional derivatives is considered. Two integral representations are derived for the corresponding relaxation modulus. The first representation is established by applying the
Emilia Bazhlekova, Sergey Pshenichnov
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