An analytical solution for two-dimensional modeling of repetitive long pulse laser heating material

Chen, Guibo; Wang, Yaodong; Zhang, Jiajia; Bi, Juan

doi:10.1016/j.ijheatmasstransfer.2016.08.079

Cited by 33 publications

(17 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The numerical method to capture the moving solid‐liquid interface is discussed. To study the transport phenomenon occurring during the process, the current numerical model is first validated with the existing analytical result from the literature . The thermophysical properties of the material of the workpiece and the laser properties have been considered as per the existing literature .…”

Section: Resultsmentioning

confidence: 99%

“…To study the transport phenomenon occurring during the process, the current numerical model is first validated with the existing analytical result from the literature. 22 The thermophysical properties of the material of the workpiece and the laser properties have been considered as per the existing literature. 22 The temperature distribution along the length as well as radial direction is studied with the help of the current model and it is observed that the result agreed well with the analytical solution 22 as shown in the Figure 2.…”

Section: Validationmentioning

confidence: 99%

“…They derived the effects of changes of laser parameters like energy and pulse width on the temperature distribution inside the workpiece and on the shape and size of the generated melt pool. Chen et al conducted an analytical study to derive relation of variation of temperature at the point of application of laser source with the variation of duty cycle, frequency of the repetitive laser source subjected to an axisymmetric two‐dimensional gallium arsenide workpiece. They considered surface laser which was Gaussian in nature.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A numerical approach for a comparative study of laser drilling process under single and repetitive pulse

Sukumar

Kar

2018

Heat Trans. Asian Res.

View full text Add to dashboard Cite

An axisymmetric model is developed to study laser drilling process under a single pulse as well as repetitive laser pulse. The laser pulse irradiated on the surface of the workpiece is volumetric and Gaussian in nature. The laser irradiated surface is subjected to convective‐radiative boundary condition while rest of the surfaces are insulated. Finite volume method is used to discretize the domain under consideration. The resulting algebraic equations are solved with the help of the tridiagonal matrix algorithm to find temperature distribution throughout the domain. The enthalpy‐porosity method is used to track the solid‐liquid interface generated during the laser melting process. Convective heat transfer occurs inside the generated melt pool. The current model is first used to validate the results of the existing literature and as the results agreed well, further studies are made to find out the advantages of using repetitive laser pulse over single pulse laser source for laser drilling process for the same laser energy and total heating duration. Vaporization has been avoided during the process and metal removal occurs through melting only. The present numerical model can provide some insight for practical laser drilling process.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A numerical approach for a comparative study of laser drilling process under single and repetitive pulse

Sukumar

Kar

2018

Heat Trans. Asian Res.

View full text Add to dashboard Cite

show abstract

“…11 Chen et al analytically solved the 2D equation for repetitive laser pulses. 12 The problem with these analytical solutions is that a wide range of simplifying assumptions must be made to make the equation solvable. For instance, all the thermal properties are considered to be constant and equations must be solved for only a single pulse.…”

Section: Introductionmentioning

confidence: 99%

3D transient model to predict temperature and ablated areas during laser processing of metallic surfaces

Naghshine

Kiani

2017

AIP Advances

View full text Add to dashboard Cite

Laser processing is one of the most popular small-scale patterning methods and has many applications in semiconductor device fabrication and biomedical engineering. Numerical modelling of this process can be used for better understanding of the process, optimization, and predicting the quality of the final product. An accurate 3D model is presented here for short laser pulses that can predict the ablation depth and temperature distribution on any section of the material in a minimal amount of time. In this transient model, variations of thermal properties, plasma shielding, and phase change are considered. Ablation depth was measured using a 3D optical profiler. Calculated depths are in good agreement with measured values on laser treated titanium surfaces. The proposed model can be applied to a wide range of materials and laser systems.

show abstract

“…An example can be found in the work of Hendow and Shakir, who solved the 2D equation to calculate the temperature field after irradiating the surface with two consecutive pulses [ 16 ]. Another example is the work of Chen et al who solved the same equation for repetitive laser pulses [ 17 ]. There are also many numerical models that provide us with much more information about the process.…”

Section: Introductionmentioning

confidence: 99%

Laser processing of thin-film multilayer structures: comparison between a 3D thermal model and experimental results

Naghshine¹,

Kiani²

2017

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

In this research, a numerical model is introduced for simulation of laser processing of thin film multilayer structures, to predict the temperature and ablated area for a set of laser parameters including average power and repetition rate. Different thin-films on Si substrate were processed by nanosecond Nd:YAG laser pulses and the experimental and numerical results were compared to each other. The results show that applying a thin film on the surface can completely change the temperature field and vary the shape of the heat affected zone. The findings of this paper can have many potential applications including patterning the cell growth for biomedical applications and controlling the grain size in fabrication of polycrystalline silicon (poly-Si) thin-film transistors (TFTs).

show abstract

An analytical solution for two-dimensional modeling of repetitive long pulse laser heating material

Cited by 33 publications

References 8 publications

A numerical approach for a comparative study of laser drilling process under single and repetitive pulse

A numerical approach for a comparative study of laser drilling process under single and repetitive pulse

3D transient model to predict temperature and ablated areas during laser processing of metallic surfaces

Laser processing of thin-film multilayer structures: comparison between a 3D thermal model and experimental results

Contact Info

Product

Resources

About