Meso-scale simulation of temperature field in composite materials under laser irradiation

2017 ◽  
Author(s):  
Hui Yan ◽  
Tai-jiao Du ◽  
Guo-liang Peng
Keyword(s):  
Temperature Field ◽  
Composite Materials ◽  
Laser Irradiation ◽  
Meso Scale

Mathematical Modeling of Thermal Association in a Porous Medium with a Capillary Effect in Anisotropic Composite Materials

2018 ◽  
Vol 771 ◽  
pp. 136-143
Author(s):  
Ekaterina Kuznetsova ◽  
Lev Rabinskiy
Keyword(s):  
Temperature Field ◽  
Composite Materials ◽  
Phase Transformations ◽  
Heat Conduction Problem ◽  
Pressure Ratio ◽  
Outer Boundary ◽  
The Body ◽  
Movable Boundary ◽  
Continuity Equations ◽  
Pyrolysis Gases

Authors developed a mathematical model of heat and mass transfer in multidimensional bodies made of composite materials, taking into account porosity and capillarity. Continuity equations for pyrolysis gases were taken for the research: the pressure ratio at the outer boundary of the body. Based on the nonstationary heat conduction problem, under conditions of high-intensity heat transfer at the boundaries of bodies, taking into account the laws of decomposition and non-linear filtration of pyrolysis gases through a porous residue, the time distribution of the movable boundary of phase transformations and the distribution of the temperature field along the variable coordinate at different instants of time are obtained. It was found that, although the thermal load at the outer boundaries is symmetric with respect to the symmetry axis, there is an obvious asymmetry in the temperature field and the movable boundary of the phase transformations.

Effect of Temperature Induced by Laser Irradiation Processing on Fatigue Damage Repairing for Copper Thin Film

2013 ◽  
Vol 750-752 ◽  
pp. 2074-2077
Author(s):  
Lu Wang ◽  
De Guang Shang ◽  
Chong Gang Ren ◽  
Yu Bo Guo ◽  
Tao Chen
Keyword(s):  
Thin Film ◽  
Temperature Field ◽  
Laser Irradiation ◽  
Fatigue Damage ◽  
Simulation Method ◽  
Optical Microscope ◽  
Laser Surface ◽  
Effect Of Temperature ◽  
Copper Thin Film ◽  
Before And After

Based on laser irradiation processing experiment for repairing damaged copper thin film specimens, the effect of temperature field induced by pulsed laser surface irradiation on fatigue damage repairing of copper thin film was studied by numerical simulation method. First the temperature field of copper thin film after laser irradiation was analyzed by ANSYS under different pulse energies and pulse numbers. Then the surface morphologies of copper thin film specimens were observed by optical microscope before and after laser surface irradiation. The results showed that laser irradiation processing has a better effect on fatigue damage repairing when the temperature induced by laser surface irradiation reaches about 1200 °C. A slightly melted morphology on the surface of copper thin film was observed in this case. In addition, except for the full healing of fatigue damage, the total fatigue life was increased about 2 times at the nominal stress level of 120MPa.

Analysis of Transient Heat Conduction in Complex Shaped Composite Materials

1988 ◽  
Vol 110 (2) ◽  
pp. 110-112 ◽  
Author(s):  
Seiichi Nomura ◽  
A. Haji-Sheikh
Keyword(s):  
Temperature Field ◽  
Heat Conduction ◽  
Composite Materials ◽  
Analytical Procedure ◽  
Three Dimensional ◽  
Transient Heat Conduction ◽  
Temperature Fields ◽  
Finite Region ◽  
Symbolic Algebra ◽  
The Galerkin Method

This paper addresses a generalized analytical procedure for transient heat conduction in composite materials of two- and three-dimensional finite region. The Galerkin method is employed to obtain temperature field in closed form with the utilization of symbolic algebra software such as REDUCE or MACSYMA. It is found from illustrative examples that the proposed method yields accurate and effective predictions of temperature fields for which purely numerical methods such as finite element or finite difference are not suitable.

Calculation of the temperature field in laser irradiation of a laminar composite

1999 ◽  
Vol 72 (1) ◽  
pp. 135-141 ◽  
Author(s):  
A. A. Evtushenko ◽  
E. G. Ivanik ◽  
S. J. Matysiak
Keyword(s):  
Temperature Field ◽  
Laser Irradiation ◽  
Laminar Composite

Temperature field modeling during multi-modes CO2 laser irradiation of human enamel

2007 ◽  
Vol 39 (3) ◽  
pp. 537-540 ◽  
Author(s):  
Oane Mihai ◽  
Florea Scarlat ◽  
Ion N. Mihailescu
Keyword(s):  
Temperature Field ◽  
Laser Irradiation ◽  
Co2 Laser ◽  
Field Modeling ◽  
Human Enamel
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