Modeling and Optimization of Kerf Taper in Pulsed Laser Cutting of Duralumin Sheet

2012 ◽  
Author(s):  
Arun Kumar Pandey ◽  
Avanish Kumar Dubey
Keyword(s):  
Laser Beam ◽  
Laser Cutting ◽  
Hybrid Approach ◽  
Pulsed Laser ◽  
Layer Formation ◽  
Heat Treated ◽  
Kerf Taper ◽  
Complex Shapes ◽  
Thermally Conductive ◽  
Design Requirements

Duralumin sheets are strong, hard, light weight and heat treated alloy of Aluminum, widely used by different sectors such as automobile, marine, aircraft and satellites. Many a times those applications demand complex shapes and intricate profiles with stringent design requirements which are not completely achieved by conventional sheet cutting methods. Laser cutting has capability of quality cutting with above requirements in thin sheetmetals. But highly reflective and thermally conductive sheetmetals like Duralumin pose difficulty in achieving quality cuts by laser beam. The kerf taper always occurs in laser cut specimen due to inherent converging-diverging profile of laser beam. The optimization of kerf taper and other cut qualities such as surface roughness, heat affected zone and recast layer formation in difficult-to-laser-cut sheetmetals like Duralumin or Aluminium alloy has become recent research interests. The aim of present research is to optimize kerf taper in pulsed laser cutting of Duralumin sheet using hybrid approach of ‘design of experiment (DOE)’ and ‘artificial intelligence tool’ such as genetic algorithm. The empirical model for kerf taper has also been proposed with the discussion on parametric effect.

Optimization of Laser Beam Cutting Process Parameters of Austenitic Materials

2015 ◽  
Vol 1111 ◽  
pp. 235-239 ◽  
Author(s):  
Sanja Petronić ◽  
Biljana Grujic ◽  
Dubravka Milovanovic ◽  
Radomir Jovicic
Keyword(s):  
Process Parameters ◽  
Laser Cutting ◽  
Elevated Pressure ◽  
Cutting Process ◽  
High Mechanical Strength ◽  
Complex Shapes ◽  
Manufactured Products ◽  
Modern Manufacturing ◽  
Design Requirements ◽  
Cutting Processes

Austenitic materials have high demand in modern manufacturing industries due to their improved technological characteristics such as high mechanical strength and hardness, corrosion resistance, heat resistance and wear resistance. Some applications of austenitic materials include elevated pressure and temperature, and require stringent design requirements and close tolerances in manufactured products. Laser cutting is one of the non-conventional cutting processes, used to obtain complex shapes and geometries. In this paper, laser cutting was performed on austenitic material. The laser cutting process parameters are varied with the aim to obtain the optimal process parameters. The geometric and metallurgical characteristics of the cut parts are investigated and compared to the conventional cutting methods of austenitic materials.

scholarly journals Experimental Analysis of Kerf Taper Angle in Cutting Process of Sugar Palm Fiber Reinforced Unsaturated Polyester Composites with Laser Beam and Abrasive Water jet Cutting Technologies

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2543
Author(s):  
Fathi Masoud ◽  
S. M. Sapuan Sapuan ◽  
Mohd Khairol Anuar Mohd Ariffin ◽  
Y. Nukman ◽  
Emin Bayraktar
Keyword(s):  
Laser Beam ◽  
Laser Cutting ◽  
Unsaturated Polyester ◽  
Traverse Speed ◽  
Cutting Process ◽  
Taper Angle ◽  
Palm Fiber ◽  
Sugar Palm Fiber ◽  
Kerf Taper ◽  
Input Parameters

In this research, the effect of processing input parameters on the kerf taper angle response of three various material thicknesses of sugar palm fiber reinforced unsaturated polyester composite was investigated as an output parameter from abrasive waterjet and laser beam cutting techniques. The main purpose of the study is to obtain data that includes the optimum input parameters in cutting the composite utilizing these two unconventional techniques to avoid some defects that arise when using traditional cutting methods for cutting the composites, and then make a comparison to determine which is the most appropriate technique regarding the kerf taper angle response that is desired to be reduced. In the laser beam cutting process, traverse speed, laser power, and assist gas pressure were selected as the variable input parameters to optimize the kerf taper angle. While the water pressure, traverse speed, and stand-off-distance were the input variable parameters in the case of waterjet cutting process, with fixing of all the other input parameters in both cutting techniques. The levels of the input parameters that provide the optimal response of the kerf taper angle were determined using Taguchi’s approach, and the significance of input parameters was determined by computing the max–min variance of the average of the signal to-noise ratio (S/N) for each parameter. The contribution of each input processing parameter to the effects on kerf taper angle was determined using analysis of variation (ANOVA). Compared with the results that were extrapolated in the previous studies, both processes achieved acceptable results in terms of the response of the kerf taper angle, noting that the average values produced from the laser cutting process are much lower than those resulting from the waterjet cutting process, which gives an advantage to the laser cutting technique.

An analytical model for pulsed laser cutting of metals

1996 ◽  
Author(s):  
Dima Bicleanu ◽  
Milan Brandt ◽  
Hartmut Kaebernick
Keyword(s):  
Analytical Model ◽  
Laser Cutting ◽  
Pulsed Laser

scholarly journals Effect of laser beam parameters on magnetic properties of Nd–Fe–B thick-film magnets fabricated by pulsed laser deposition

2011 ◽  
Vol 109 (7) ◽  
pp. 07A758 ◽  
Author(s):  
H. Fukunaga ◽  
T. Kamikawatoko ◽  
M. Nakano ◽  
T. Yanai ◽  
F. Yamashita
Keyword(s):  
Magnetic Properties ◽  
Laser Beam ◽  
Pulsed Laser Deposition ◽  
Thick Film ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Beam Parameters

Tempering rapidly solidified ductile cast iron by pulsed laser beam reprocessing

1994 ◽  
Vol 31 (4) ◽  
pp. 433-438 ◽  
Author(s):  
H.M. Wang ◽  
H.W. Bergmann
Keyword(s):  
Cast Iron ◽  
Laser Beam ◽  
Pulsed Laser ◽  
Ductile Cast Iron ◽  
Rapidly Solidified ◽  
Pulsed Laser Beam

Quasi-one-dimensional thermal deformation and displacement of the surface of a solid in a pulsed laser beam

1997 ◽  
Vol 39 (12) ◽  
pp. 1985-1988
Author(s):  
S. V. Vintsents ◽  
S. G. Dmitriev ◽  
K. I. Spiridonov
Keyword(s):  
Laser Beam ◽  
Thermal Deformation ◽  
Pulsed Laser ◽  
One Dimensional ◽  
Pulsed Laser Beam

LASERTRON, a new type of RF source using photoemission triggered by a pulsed laser beam

1985 ◽  
Vol 238 (2-3) ◽  
pp. 215-219 ◽  
Author(s):  
Y. Fukushima ◽  
T. Kamei ◽  
H. Matsumoto ◽  
H. Mizuno ◽  
I. Sato ◽  
...  
Keyword(s):  
Laser Beam ◽  
Pulsed Laser ◽  
New Type ◽  
Pulsed Laser Beam

Affected Characteristics Analysis of the Pulsed Laser Forming of Metal Sheet

2008 ◽  
Vol 375-376 ◽  
pp. 333-337
Author(s):  
Li Jun Yang ◽  
Yang Wang
Keyword(s):  
Laser Beam ◽  
Pulsed Laser ◽  
Metal Sheet ◽  
Grain Structure ◽  
Experimental Result ◽  
Laser Forming ◽  
Forming Process ◽  
Grain Orientations ◽  
Characteristics Analysis ◽  
Relationship Of

Laser forming of metal sheet is a forming technology of sheet without a die that the sheet is deformed by internal thermal stress induced by partially irradiation of a laser beam. In this paper, the bending behavior of common stainless steel 1Cr18Ni9 sheet is studied after being irradiated by straight line with a Nd:YAG pulsed laser beam. The aim of the investigation is to find out the relationship of the physical behaviors of heat affected zone (HAZ) with the pulse parameters of the laser. Through the analysis of the fundamental theory of pulsed laser affected, this paper shows the affected characteristics of metal sheet with pulsed laser forming. The results show that the microstructure of HAZ of pulsed laser scanned is layered, and the micro-hardness is improved than that in matrix. The microstructures show that the deformed grain structure is inhomogeneous, that caused the grain sizes and grain orientations in HAZ to become different. By qualitative analysis of experimental result, the conclusion obtained may provide basis for theoretical investigation and possible industrial application of laser forming process in the future.

Laser Cutting of Glass Tubes

2006 ◽  
Vol 514-516 ◽  
pp. 729-733
Author(s):  
João M.P. Coelho ◽  
D. Castro Alves ◽  
Manuel A. Abreu
Keyword(s):  
Laser Beam ◽  
Laser Cutting ◽  
Glass Tubes

This work presents a technique for cutting glass tubes, without the need of pre-heating or any posterior action. Rotating the piece under a laser beam focused on the surface at the zone were it’s to be cut, stresses will not act, and while the material is dissociated at the laser beam irradiated volume, at its frontiers the glass reduces his viscosity allowing that the resulting faces become smoothed.

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