High-intensity laser-induced vaporization and explosion of solid material

Dabby, F. W.; Paek, Un-Chul

doi:10.1109/jqe.1972.1076937

Cited by 220 publications

(41 citation statements)

References 7 publications

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“…The temperature results are obtained by using a simple and concise finite-difference algorithm based on the Godunov scheme. This study confirmed the results by Dabby and Paek [17] and Blackwell [18] in which they stated that an "explosive removal of material" phenomenon can possibly occur when sufficient incident energy is absorbed and a localized temperature maximum occurs within the material due to cooling of the exposed surface, thereby inducing an expanded phase change within the outer surface of the solid. Recently, Izadpanah et al [19] investigated numerically the non-Fourier effects on transient and steady temperature distributions in combined heat transfer, and studied the processes of coupled conduction and radiation heat transfer in a gray, absorbing, emitting, scattering, onedimensional medium with black boundary surfaces.…”

Section: Introductionsupporting

confidence: 90%

Non-Fourier Thermoelastic Analysis of an Annular Fin with Variable Convection Heat Transfer Coefficient

et al. 2012

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This paper numerically investigates the hyperbolic thermoelastic problem of an annular fin. The ambient convection heat transfer coefficient of the fin is assumed to be spatially varying. The major difficulty in dealing with such problems is the suppression of numerical oscillations in the vicinity of a jump discontinuity. An efficient numerical scheme involving hybrid application of Laplace transform and control volume method in conjunction with hyperbolic shape functions is used to solve the linear hyperbolic heat conduction equation. The transformed nodal temperatures are inverted to the physical quantities by using numerical inversion of the Laplace transform. Then the stress distributions in the annular fin are calculated subsequently. The results in the illustrated examples show that the application of hyperbolic shape functions can successfully suppress the numerical oscillations in the vicinity of jump discontinuities. 1069 hConvection heat transfer coefficient (W · m −2 · K −1 ) k Thermal conductivity (W · m −1 · K −1 ) l Dimensionless distance between two nodes q Heat flux (W · m −2 ) r Radial coordinate (m) r 1 Base radius of the annular fin (m) r 2 Tip radius of the annular fin (m) sLaplace transform parameter T Temperature (K)Propagation speed of thermal wave (m · s −1 )Greeks α Thermal diffusivity (m 2 · s −1 ) β Dimensionless relaxation time, ατ/r 2 1 γ Constant δ Fin thickness (m) λ (βs 2 + s) 1/2 ν Poisson's ratio ξ γ(βs + 1) ρ Density (kg · m −3 ) σ r Radial stress component (MPa) σ θ Tangential stress component (MPa) τRelaxation time (s) ω Thermal expansion coefficient (K −1 )

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Section: Introductionsupporting

confidence: 90%

Non-Fourier Thermoelastic Analysis of an Annular Fin with Variable Convection Heat Transfer Coefficient

et al. 2012

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“…Such a condition implies a higher temperature inside the tissue than at the surface (Dabby andPaek 1972, Gagliano andPaek 1974). Our experiments in a water-tissue geometry ensured a substantial surface cooling and hence most likely resulted in a subsurface temperature maximum.…”

Section: Surface Coolingmentioning

confidence: 85%

Soft Decision Decoding for Holographic Memories with Intrapage Intensity Variations

Jeon¹,

Han²,

Yang³

et al. 2001

Jpn. J. Appl. Phys.

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“…Ready [2] studied the effects of high-power laser incidence on absorbing opaque surfaces. Dabby and Paek [3] analytically investigated the material removal process from the front surface of a solid heated by a high-intensity laser. Blackwell [1] modeled the effect of continuous laser heating of a semi-infinite slab with convection on the surface of incidence.…”

Section: Nomenclaturementioning

confidence: 99%

Nonlinear Heat Conduction in Isotropic and Orthotropic Materials with Laser Heat Source

Fong

Lam

Davis

2010

Journal of Thermophysics and Heat Transfer

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Although the convective cooling of simple materials undergoing laser irradiation has been well documented, the effects of radiative cooling for composite materials undergoing laser heating are not as well documented and are of increasing importance to the manufacturing and aerospace industries. The temperature distributions within onedimensional homogeneous and two-dimensional orthotropic radiating plates subjected to a spatially decaying laser source are presented. The incident energy at the exposed external surface is partially absorbed and transferred through the plate by conduction. The temperature results are presented as a function of a wide variety of thermal and geometric dimensionless parameters. The effects of surface radiation and material conductivity are examined in detail. Results from this study are compared to data in the open literature to gain a better understanding of the effects that the fourth power law for radiation, local temperature gradient in conduction, and first power of the temperature difference in convection have on the resultant temperature profiles. Nomenclature A i = area of node i Bi = Biot number, h=k C i = nodal capacitance, J=K C p = specific heat, J=kg K d = laser beam diameter, m F ij = view factor between nodes i and j G ij = linear or radiation conductance, W=K _ g = Gaussian spatial profile of the laser _ g 000 = energy generation rate per unit volume, W=m 3 h = convective heat transfer coefficient, W=m 2 K I o = laser peak power density, W=m 2 k = thermal conductivity, W=m K L = thickness of the plate, m n = total number of nodes of the thermal math model Q i = heat source, W R = surface reflectance T = present temperature, K T c = external environment temperature for convective exchange, K T o = initial temperature, K T r = external environment temperature for radiative exchange, K T 0 = unknown temperature, K T 00 = past temperature, K T = dimensionless temperature, T T o =I o 1 R=k t = time, s W = half-width of the plate, m x = x coordinate, m y = y coordinate, m y = depth, y = thermal diffusivity, m 2 =s = laser-pulse fall-time parameter, 1=s " = emissivity = laser-pulse rise-time parameter, 1=s = absorption coefficient, 1=m = density, kg=m 3 = Stefan-Boltzmann constant, 5:67 10 8 W=m 2 K 4 = dimensionless time, t 2 Subscripts e = external i = current node j = adjacent node o = initial x = x direction y = y direction 1 = surface 1 2 = surface 2

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High-intensity laser-induced vaporization and explosion of solid material

Cited by 220 publications

References 7 publications

Non-Fourier Thermoelastic Analysis of an Annular Fin with Variable Convection Heat Transfer Coefficient

Non-Fourier Thermoelastic Analysis of an Annular Fin with Variable Convection Heat Transfer Coefficient

Soft Decision Decoding for Holographic Memories with Intrapage Intensity Variations

Nonlinear Heat Conduction in Isotropic and Orthotropic Materials with Laser Heat Source

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