Photo-Thermal-Elastic Interaction in a Functionally Graded Material (FGM) and Magnetic Field

Lotfy, Kh.; Tantawi, Ramadan S.

doi:10.1007/s12633-019-00125-5

Cited by 76 publications

(16 citation statements)

References 24 publications

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“…(2018) surveyed a three dimensional asymmetric TE response of a rotating functionally graded truncated conical shell subjected to thermal field and inertia force. Lotfy and Tantawi (2020) investigated the photo-thermalelastic interactions in a nano-composite semiconducting functionally graded material. Wang et al.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamical interactions in a rotating functionally graded semiconductor material with gravity

Sheoran

Yadav

Punia

et al. 2023

MMMS

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PurposeThe purpose of this paper is to analyse the transient effects in a functionally graded photo-thermoelastic (TE) medium with gravity and rotation by considering two generalised TE theories: Lord–Shulman (LS) and Green–Lindsay (GL). The governing equations are derived in rectangular Cartesian coordinates for a two dimensional problem.Design/methodology/approachAll the physical properties of the semiconductor are supposed to vary exponentially with distance. The analytical solution is procured by employing normal mode technique on the resulting non-dimensional coupled field equations with appropriate boundary conditions.FindingsFor the mechanically loaded thermally insulated surface, normal displacement, stress components, temperature distribution and carrier density are calculated numerically with the help of MATLAB software for a silicon semiconductor and displayed graphically. Some particular cases of interest have also been deduced from the present results.Originality/valueThe effects of rotation and non-homogeneity on the different physical fields are investigated on the basis of analytical and numerical results. Comparisons are made with the results predicted by GL theory in the presence and absence of gravity for different values of time. Comparisons are also made between the three theories in the presence of rotation, gravity and in-homogeneity. Such problems are very important in many dynamical systems.

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Section: Introductionmentioning

confidence: 99%

Thermodynamical interactions in a rotating functionally graded semiconductor material with gravity

Sheoran

Yadav

Punia

et al. 2023

MMMS

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“…Lotfy et al (2020) studied the effects of rotation and Thomson parameters during photothermal excitation process in a magnetic semiconductor medium. Lotfy and Tantawi (2020) and Mahdy et al (2020, 2021a, 2021b) observed the photothermal effect on various types of media under different theories of thermoelasticity. Gupta et al (2022) looked into photothermal excitation process in an initially stressed nonlocal thermoelastic semiconductor with voids under the fractional order triple-phase-lag thermoelasticity theory.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamical interactions in a micropolar magneto-thermoelastic medium with photothermal effect

Jatain,

Deswal,

Kalkal

2023

HFF

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Purpose The purpose of this paper is to establish a two-dimensional model of Green–Lindsay theory for micropolar magneto-thermoelastic medium to study the photothermal effect. The model is used to study the coupling between elastic waves and plasma waves generated due to thermal changes in a micropolar elastic medium. Design/methodology/approach Normal mode analysis is used to obtain the analytical solutions of the governing equations. Findings Effects of magnetic field, micropolarity, photothermal and time are highlighted on various physical fields such as stresses, temperature, displacement and carrier density. The above physical fields also conform to the boundary conditions. It is further observed that all the physical quantities become zero outside some bounded region of space, thus confirming the notion of generalized theory of thermoelasticity. Originality/value The values of physical fields are computed numerically using MATLAB software considering material constants for silicon. Furthermore, the effects are depicted graphically and analyzed accordingly. The study is valuable for the analysis of thermoelastic problems involving magnetic field, micropolarity and elastic deformations.

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“…e effect of electromagnetic radiation with noting long-transient effects and laser pulses impact is studied of semiconductor media [15]. Lotfy et al [16][17][18] investigated many problems when using the photothermoelasticity theory with multiple applications for silicon semiconductor material. e Gaussian pulsed laser source is utilized to produce heat impact on semiconductor material [19].…”

Section: Introductionmentioning

confidence: 99%

Laser Short-Pulse Effect on Thermodiffusion Waves of Fractional Heat Order for Excited Nonlocal Semiconductor

Almoneef

El‐Sapa

Lotfy

et al. 2022

Advances in Condensed Matter Physics

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In this work, the thermal effect of a laser pulse is taken into account when mechanical-thermodiffusion (METD) waves are studied. The nonlocal semiconductor material is used when interference between holes and electrons occurs. The fractional technique is applied on the heat equation according to the photo-thermoelasticity theory. The governing equations describe the photo-excitation processes according to the overlapping between the thermoelasticity and photothermal theories. The thermoelastic deformation (TD) and the electronic deformation (ED) for the dimensionless fields are taken in one dimension (1D). The Laplace transforms are applied to obtain the analytical solutions when some initial and boundary conditions are applied at the nonlocal surface. The complete nondimensional solutions of the main quantities are obtained according to some numerical simulation approximate during the inversion processes of Laplace transforms and Fourier expansion. The time-fractional order, nonlocal, and thermal memories are used to compare the wave propagations of the main fields and are discussed graphically for nonlocal silicon material.

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Photo-Thermal-Elastic Interaction in a Functionally Graded Material (FGM) and Magnetic Field

Cited by 76 publications

References 24 publications

Thermodynamical interactions in a rotating functionally graded semiconductor material with gravity

Thermodynamical interactions in a rotating functionally graded semiconductor material with gravity

Thermodynamical interactions in a micropolar magneto-thermoelastic medium with photothermal effect

Laser Short-Pulse Effect on Thermodiffusion Waves of Fractional Heat Order for Excited Nonlocal Semiconductor

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