نتایج جستجو برای: thermo viscoelasticity

تعداد نتایج: 16853  

Journal: :Journal of Molecular Liquids 2021

Ionic liquid gels (ionogels) are useful as flexible solid electrolytes owing to their high ionic conductivity and non-volatility. Ionogels possessing photoswitchable have versatile electronic applications, although the fabrication of such materials remains a challenge. Herein, we synthesized photoresponsive ionogels by adding low-molecular-weight gelator, 12-hydroxystearic acid, photoreactive o...

Journal: :Engineering Fracture Mechanics 2021

• Development of a (nonlocal) damage viscoelastic model based on the Thick Level Set (TLS) approach. First implementation in 1D combining TLS approach and viscoelasticity. Application to simulation UTST tests performed bituminous material. Assessment developed rupture at different temperatures. The present paper deals with development mechanical coupling viscoelasticity for applications related...

Journal: :SIAM J. Math. Analysis 2017
Jaime E. Muñoz Rivera Reinhard Racke

We investigate transmission problems between a (thermo-)viscoelastic system with Kelvin-Voigt damping, and a purely elastic system. It is shown that neither the elastic damping by Kelvin-Voigt mechanisms nor the dissipative effect of the temperature in one material can assure the exponential stability of the total system when it is coupled through transmission to a purely elastic system. The ap...

Journal: :Optics letters 2011
Guodong Gao Sihua Yang Da Xing

A method for noninvasive viscoelasticity imaging of biological tissues using phase-resolved photoacoustic measurement is presented. We deduced the process of photoacoustic effect on the basis of thermal viscoelasticity theory, and established the relationship between the photoacoustic phase delay and the viscosity-elasticity ratio for soft solids. Agar phantoms with different densities and diff...

2009
H. R. THOMAS S. C. SEETHARAM

This technical note presents a coupled thermo-hydromechanical model for unsaturated soil, which can be applied in the context of high temperature. A new pore gas or bulk air transfer equation is introduced. Additionally the effect of temperature on the latent heat of vapourisation and specific heat capacities is incorporated. Adsorbed water is also included. The performance of the model is demo...

Journal: :Ultrasound in medicine & biology 2014
Edwin L Carstensen Kevin J Parker

This review considers three general classes of physical as opposed to phenomenological models of the shear elasticity of tissues. The first is simple viscoelasticity. This model has a special role in elastography because it is the language in which experimental and clinical data are communicated. The second class of models involves acoustic relaxation, in which the medium contains inner time-de...

2012
Masami Kageshima

The frequency-resolved viscoelasticity of a hydration layer on a mica surface was studied by pulse-response measurement of a magnetically driven atomic force microscopy cantilever. Resonant ringing of the cantilever due to its 1st and 2nd resonance modes was suppressed by means of the Q-control technique. The Fourier-Laplace transform of the deflection signal of the cantilever gave the frequenc...

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