Journal ArticleDOI
Modeling and simulation on long pulse laser drilling processing
Reads0
Chats0
TLDR
In this article, a modified level-set method was used to simulate the laser drilling process on aluminum slab with millisecond pulsed laser and a 2D model was developed to trace the liquid-gas interface as well as consider mass loss during evaporation and boiling.About:
This article is published in International Journal of Heat and Mass Transfer.The article was published on 2014-06-01. It has received 92 citations till now. The article focuses on the topics: Laser drilling & Pulse duration.read more
Citations
More filters
Journal ArticleDOI
Linking process, structure, property, and performance for metal-based additive manufacturing: computational approaches with experimental support
Jacob Smith,Wei Xiong,Wentao Yan,Stephen Lin,Puikei Cheng,Orion L. Kafka,Gregory J. Wagner,Jian Cao,Wing Kam Liu +8 more
TL;DR: In this article, the authors discuss primary detrimental hurdles that have plagued effective modeling of additive manufacturing methods for metallic materials while also providing logical speculation into preferable research directions for overcoming these hurdles, including high performance computing, multiscale modeling, materials characterization, process modeling, experimentation, and validation for final product performance of additively manufactured metallic components.
Journal ArticleDOI
Tailoring surface quality through mass and momentum transfer modeling using a volume of fluid method in selective laser melting of TiC/AlSi10Mg powder
Donghua Dai,Dongdong Gu +1 more
TL;DR: In this article, a selective laser melting (SLM) physical model of coupled radiation transfer and thermal diffusion is proposed, which provides a local temperature field, and the effect of the laser energy input per unit length (LEPUL) on the temperature distribution, melt pool dynamics, surface tension and resultant surface morphology is investigated.
Journal ArticleDOI
Comparison of microstructures and mechanical properties of Inconel 718 alloy processed by selective laser melting and casting
TL;DR: In this article, a finite element analysis (FEA) method is used to simulate the temperature fields during SLM and casting processes, and the microstructures and mechanical properties of Inconel 718 superalloy manufactured by selective laser melting (SLM) and casting are investigated.
Journal ArticleDOI
The laser micro-machining system for diamond anvil cell experiments and general precision machining applications at the High Pressure Collaborative Access Team
TL;DR: Though initially designed mainly for machining of the diamond anvil cell gaskets, the laser-machining system has since found many other micro-Machining applications, several of which are presented here.
Journal ArticleDOI
Thermal behavior in single track during selective laser melting of AlSi10Mg powder
TL;DR: In this article, the effect of the laser scanning speed and laser power on the thermodynamic behavior of the molten pool was investigated numerically, and it was shown that the temperature gradient and the resultant surface tension gradient between the center and the edge of the pool increase with decreasing the scanning speed or increasing the laser power, thereby intensifying the Marangoni flow and attendant turbulence within the pool.
References
More filters
Book
Fundamentals of Heat and Mass Transfer
TL;DR: This paper introduced the physical effects underlying heat and mass transfer phenomena and developed methodologies for solving a variety of real-world problems, such as energy minimization, mass transfer, and energy maximization.
Journal ArticleDOI
A fixed grid numerical modelling methodology for convection-diffusion mushy region phase-change problems
Vaughan R Voller,C. Prakash +1 more
TL;DR: In this article, an enthalpy formulation based fixed grid methodology is developed for the numerical solution of convection-diffusion controlled mushy region phase-change problems, where the basic feature of the proposed method lies in the representation of the latent heat of evolution, and of the flow in the solid-liquid mushy zone, by suitably chosen sources.
Journal ArticleDOI
A conservative level set method for two phase flow II
TL;DR: In this article, the conservative level set method for incompressible two-phase flow with surface tension is studied. But the authors focus on the conservation of mass and do not consider the effect of the finite element discretization.
Journal ArticleDOI
Laser drilling velocity in metals
TL;DR: In this paper, a theoretical model of the laser drilling process is developed, which allows the calculation of drilling velocity and drilling efficiency as a function of the absorbed intensity, and good agreement between measurement and calculation was found in the intensity region where efficient drilling is possible, where reflection losses and vapor absorption can be neglected.
Related Papers (5)
A fixed grid numerical modelling methodology for convection-diffusion mushy region phase-change problems
Vaughan R Voller,C. Prakash +1 more