Study of the process of rapid prototyping with laser beam

2006 ◽  
Author(s):  
V. Kovalenko ◽  
M. Anyakin ◽  
P. Kondrashov ◽  
A. Mukhoid ◽  
A. Stepura ◽  
...  
Keyword(s):  
Laser Beam ◽  
Rapid Prototyping

Advanced rapid prototyping by laser beam sintering of metal prototypes: design and development of an optimized laser beam delivery system

1996 ◽  
Author(s):  
Manfred Geiger ◽  
A. Coremans ◽  
Norbert Neubauer ◽  
F. Niebling
Keyword(s):  
Laser Beam ◽  
Rapid Prototyping ◽  
Delivery System ◽  
Design And Development ◽  
Beam Delivery ◽  
Beam Delivery System

Rapid prototyping of micro-fluidic components by laser beam processing

2007 ◽  
Author(s):  
Martin Wehner ◽  
Philipp Jacobs ◽  
Reinhart Poprawe
Keyword(s):  
Laser Beam ◽  
Rapid Prototyping

907 Rapid prototyping of Ti powder using pulsed laser beam and its photocatalyst effect

2010 ◽  
Vol 2010.47 (0) ◽  
pp. 321-322
Author(s):  
Kuniaki HIGASHIYAMA ◽  
Tadashi MISU ◽  
Tuyoshi TOKUNAGA ◽  
Toshiyuki MIYAZAKI
Keyword(s):  
Laser Beam ◽  
Rapid Prototyping ◽  
Pulsed Laser ◽  
Ti Powder ◽  
Pulsed Laser Beam

Process Research of Laser Variable-Spot Overlap Cladding Based on Inside-Laser Coaxial Powder Feeding

2012 ◽  
Vol 566 ◽  
pp. 556-559
Author(s):  
Fei Cao ◽  
Shi Hong Shi ◽  
Ge Yan Fu ◽  
Yi Shao Zhang ◽  
Ji Li
Keyword(s):  
Laser Beam ◽  
Rapid Prototyping ◽  
Laser Cladding ◽  
Theoretical Basis ◽  
Process Research ◽  
Beam Power ◽  
Central Section ◽  
Novel Device ◽  
Step Effect ◽  
Hollow Laser Beam

Analyze the contradiction of laser cladding rapid prototyping between cladding efficiency and cladding precision, this paper advanced laser variable-spot cladding process with small facula outlining border of workpiece and big facula filling in central section of workpiece in order to improve the influence of “Step effect”. Based on the patent technology of “Hollow laser beam and internal power feeding”, the experiments of laser variable-spot overlap cladding are carried out on the substrate of 45# steel with a novel device of coaxial inside-beam power feeding. The experimental results were analyzed to provide a theoretical basis for the promotion and application of laser variable -spot overlap cladding.

Research on the Design of the Laser Beam in SLS Rapid Prototyping Machine

2019 ◽  
Vol 894 ◽  
pp. 140-148
Author(s):  
Vo Tuyen ◽  
Thanh Nam Nguyen ◽  
Khanh Dien Le
Keyword(s):  
Additive Manufacturing ◽  
Laser Beam ◽  
Rapid Prototyping ◽  
Powder Material ◽  
Selective Laser Sintering ◽  
Rapid Prototype ◽  
Powdered Material ◽  
Laser Source ◽  
Technical Parameters ◽  
Technical Requirements

Selective Laser Sintering (SLS) is an HYPERLINK "https://en.wikipedia.org/wiki/Additive_manufacturing" \o "Additive manufacturing" additive manufacturing (AM) technique that uses a HYPERLINK "https://en.wikipedia.org/wiki/Laser" \o "Laser" Laser as the power source to HYPERLINK "https://en.wikipedia.org/wiki/Sintering" \o "Sintering" sinter powdered material, typically HYPERLINK "https://en.wikipedia.org/wiki/Nylon" \o "Nylon" nylon/ HYPERLINK "https://en.wikipedia.org/wiki/Polyamide" \o "Polyamide" polyamide HYPERLINK "https://en.wikipedia.org/wiki/Selective_laser_sintering" \l "cite_note-1" [7], HYPERLINK "https://en.wikipedia.org/wiki/Selective_laser_sintering" \l "cite_note-2" [8]. A Laser beam HYPERLINK "https://en.wikipedia.org/wiki/Automation" \o "Automation" automatically aims at points in space defined by a HYPERLINK "https://en.wikipedia.org/wiki/3D_modeling" \o "3D modeling" 3D model, binding the material together to create a solid structure. In the SLS rapid prototype machine, a high power CO2 Laser sources is applied for sintering the powder material to its melting point temperature. The ability of application of a Laser radiation for sintering the material depends on the power of energy source and the time of interaction of radiation with the material of the product. Otherwise, the design of Laser beam for sintering powder material depends on the technical parameters such as power Laser source, Laser point size, type and focus of lenses.... This article presents a study on the design of our own Laser beam sintering in the SLS rapid prototype that satisfies the technical requirements. The results of testing show that the designed and manufactured Laser beam instrument in SLS rapid prototype machine in our laboratory can be approved because it satisfies all the technological requirements of the medium range of SLS rapid prototyping machine.

Rapid prototyping of glass-based microfluidic chips utilizing two-pass defocused CO2 laser beam method

2012 ◽  
Vol 14 (3-4) ◽  
pp. 479-487 ◽  
Author(s):  
Lung-Ming Fu ◽  
Wei-Jhong Ju ◽  
Ruey-Jen Yang ◽  
Yao-Nan Wang
Keyword(s):  
Laser Beam ◽  
Rapid Prototyping ◽  
Co2 Laser ◽  
Microfluidic Chips ◽  
Beam Method

scholarly journals Evaluation of Titanium Alloys Fabricated Using Rapid Prototyping Technologies—Electron Beam Melting and Laser Beam Melting

Materials ◽  
2011 ◽  
Vol 4 (10) ◽  
pp. 1776-1792 ◽  
Author(s):  
Mari Koike ◽  
Preston Greer ◽  
Kelly Owen ◽  
Guo Lilly ◽  
Lawrence E. Murr ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Beam ◽  
Rapid Prototyping ◽  
Titanium Alloys ◽  
Electron Beam Melting ◽  
Laser Beam Melting

Two-photon excitation microscopy in cellular biophysics

1995 ◽  
Vol 53 ◽  
pp. 62-63
Author(s):  
David W. Piston ◽  
Brian D. Bennett ◽  
Robert G. Summers
Keyword(s):  
Confocal Microscopy ◽  
Laser Beam ◽  
Duty Cycle ◽  
Excited Electronic State ◽  
Input Power ◽  
Two Photon ◽  
Simultaneous Absorption ◽  
Photon Excitation ◽  
Very High ◽  
Two Photon Excitation

Two-photon excitation microscopy (TPEM) provides attractive advantages over confocal microscopy for three-dimensionally resolved fluorescence imaging and photochemistry. Two-photon excitation arises from the simultaneous absorption of two photons in a single quantitized event whose probability is proportional to the square of the instantaneous intensity. For example, two red photons can cause the transition to an excited electronic state normally reached by absorption in the ultraviolet. In practice, two-photon excitation is made possible by the very high local instantaneous intensity provided by a combination of diffraction-limited focusing of a single laser beam in the microscope and the temporal concentration of 100 femtosecond pulses generated by a mode-locked laser. Resultant peak excitation intensities are 106 times greater than the CW intensities used in confocal microscopy, but the pulse duty cycle of 10-5 maintains the average input power on the order of 10 mW, only slightly greater than the power normally used in confocal microscopy.

The atomic-force microscope and its future in biology

1993 ◽  
Vol 51 ◽  
pp. 704-705
Author(s):  
Jean-Paul Revel
Keyword(s):  
Silicon Nitride ◽  
Laser Beam ◽  
Atomic Force Microscope ◽  
Scanning Tunneling Microscope ◽  
Point Of View ◽  
Scanning Tunneling ◽  
Close Relative ◽  
Tunneling Microscope ◽  
Atomic Force ◽  
Sharp Point

The last few years have been marked by a series of remarkable developments in microscopy. Perhaps the most amazing of these is the growth of microscopies which use devices where the place of the lens has been taken by probes, which record information about the sample and display it in a spatial from the point of view of the context. From the point of view of the biologist one of the most promising of these microscopies without lenses is the scanned force microscope, aka atomic force microscope.This instrument was invented by Binnig, Quate and Gerber and is a close relative of the scanning tunneling microscope. Today's AFMs consist of a cantilever which bears a sharp point at its end. Often this is a silicon nitride pyramid, but there are many variations, the object of which is to make the tip sharper. A laser beam is directed at the back of the cantilever and is reflected into a split, or quadrant photodiode.

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