ICALEO 2005 Paper #103 (Microstructure Integrated Finite Element Modeling of Laser Forming Particle Reinforced Aluminum Matrix Composite Sheets)
Microstructure Integrated Finite Element Modeling of Laser Forming Particle Reinforced Aluminum Matrix Composite Sheets
Authors:
Liu Furong, Hong Kong Polytechnic University; Hong Kong
Presented at ICALEO 2005
Laser forming is a novel process to deform the metal sheet by using the thermal stress caused by the changes of the transient temperature field without the assistance of the external tools, therefore, it is popularly used in many fields of the industries. From its birth, considerable amount of experiments and analytical or numerical models were carried out to investigate the deformation behavior of the metal sheet. However, most of the investigations were focused on the monolithic alloy...$28.00
ICALEO 2005 Paper #102 (Effects of Clamping on the Laser Forming Process)
Effects of Clamping on the Laser Forming Process
Authors:
Andrew J. Birnbaum, Columbia University; New York NY USA
Peng Cheng, Columbia University; New York NY USA
Y. Lawrence Yao, Columbia University; New York NY USA
Presented at ICALEO 2005
Although considerable effort has gone into characterizing the laser forming process in terms of process parameters and conditions, there has been little emphasis on the effects of the mechanical and thermal constraints introduced by the clamping method utilized for a desired application. This research suggests means for investigating and predicting the resulting geometry of a specimen due to laser operation in close proximity to ...$28.00
ICALEO 2005 Paper #101 (Laser Forming of Thin Section Non Ferrous Metals with a Nd:YAG Laser Source)
Laser Forming of Thin Section Non Ferrous Metals with a Nd:YAG Laser Source
Authors:
Jacek Borowski, Metal Forming Institute; Poznan Poland
Konrad Bartkowiak, The University of Liverpool; Liverpool UK
Stuart Paul Edwardson, The University of Liverpool; Liverpool UK
Geoff Dearden, The University of Liverpool; Liverpool UK
Chris Carey, The University of Liverpool; Liverpool UK
Kenneth Watkins, The University of Liverpool; Liverpool UK
Presented at ICALEO 2005
Laser forming is a relatively novel laser technique which has a practical extension for many industrial applications. The laser forming process has become viable for the shapin...$28.00
ICALEO 2005 Paper #1006 (Numerical Modeling of Molten Pool Formation During an Interaction of a Pulse Laser (Nd:YAG) with an Aluminum Sheet)
Numerical Modeling of Molten Pool Formation During an Interaction of a Pulse Laser (Nd:YAG) with an Aluminum Sheet
Authors:
Nicolas Pierron, LTm - IUT Le Creusot; Le Creusot France
Presented at ICALEO 2005
In this paper a numerical modeling of molten pool during laser processing is presented. A 2D model is implemented in the finite element software Femlab. This study presents the first results obtained for aluminum sheets. Because of the laser power density and localized laser heating, high temperature gradients are produced. Consequently, a numerical approach in order to establish a model for such phenomena is often complicated but useful. A very fine mesh is realized in the interaction zone...$28.00
ICALEO 2005 Paper #1005 (Modeling the Microstructure Evolution During Laser Processing of Ti-6Al-4V)
Modeling the Microstructure Evolution During Laser Processing of Ti-6Al-4V
Authors:
Shawn Kelly, Applied Research Laboratory - The Penn State University; State College PA USA
S. Suresh Babu, Oak Ridge National Laboratory; Oak Ridge TN USA
Stephen Kampe, Materials Science and Engineering Dept., Virginia Tech; Blacksburg VA USA
Presented at ICALEO 2005
Near-net shape processes, such as laser metal deposition (LMD), offer a unique combination of process flexibility, time savings, and reduced cost in producing titanium alloy components. The current challenge in processing titanium alloys (Ti-6Al-4V) using LMD is in understanding the complex microstructure evolution in a p...$28.00
ICALEO 2005 Paper #1003 (Wave-Solid Interactions in Shock Induced Deformation Processes)
Wave-Solid Interactions in Shock Induced Deformation Processes
Authors:
Yajun Fan, Columbia University; New York NY USA
Youneng Wang, Columbia University; New York NY USA
Sinisa Vukelic, Columbia Univ.; New York NY USA
Y. Lawrence Yao, Columbia Univ.; New York NY USA
Presented at ICALEO 2005
A model was developed for material deformation processes induced by laser generated shock waves. They include laser shock peening (LSP) and laser peen forming (LPF) of metals. Numerical solutions of the model using finite element method (FEM) were implemented in two steps: (1) explicit step, devoted to shock wave propagation; and (2) implicit step, calculating relaxat...$28.00
ICALEO 2005 Paper #1002 (A Phase-Field Model for Microstructure Evolution of Laser Cladding Process)
A Phase-Field Model for Microstructure Evolution of Laser Cladding Process
Authors:
Joohyun Choi, University of Missouri - Rolla; Rolla MO USA
Y. Cao, University of Missouri-Rolla; Rolla MO USA
Presented at ICALEO 2005
Laser cladding is an additive manufacturing process that a laser generates a melt-pool on the substrate material while a second material, as a powder or a wire form, is injected into that melt-pool. Among all laser processes, laser cladding offers the most extensive variety of possibilities to alter a component at its surface. Despite immense potentials and advancements, the process model of microstructure evolution of laser cladding process has not been fully deve...$28.00
ICALEO 2005 Paper #1001 (Assist Gas Behaviors in the Cutting Groove of Different Thickness)
Assist Gas Behaviors in the Cutting Groove of Different Thickness
Authors:
Takeji Arai, Chuo University of RDI; Tokyo Japan
Noritaka Asano, Chuo University of RDI; Tokyo Japan
Presented at ICALEO 2005
The behavior of assist gas flow in the groove of different material thickness was investigated. Based upon the real shapes of cutting grooves, simulation model was established using the CAD drawings. The cross section in the direction perpendicular to the cut have a throat at both side walls in the groove owing to the effect of focal position. The simulation results shows that these throats can make accepted the assumption of the equation of continuity of gas flow under the boundary ...$28.00
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