A model for the interaction of near-infrared laser pulses with metal powders in selective laser sintering

2002 ◽  
Vol 74 (4) ◽  
pp. 467-474 ◽  
Author(s):  
P. Fischer ◽  
N. Karapatis ◽  
V. Romano ◽  
R. Glardon ◽  
H.P. Weber
Keyword(s):  
Near Infrared ◽  
Selective Laser Sintering ◽  
Laser Pulses ◽  
Laser Sintering ◽  
Infrared Laser ◽  
Metal Powders

Experimental investigation on the vascular thermal response to near-infrared laser pulses

2017 ◽  
Vol 32 (9) ◽  
pp. 2023-2038 ◽  
Author(s):  
Dong Li ◽  
Bin Chen ◽  
Wenjuan Wu ◽  
Zhaoxia Ying
Keyword(s):  
Experimental Investigation ◽  
Near Infrared ◽  
Thermal Response ◽  
Laser Pulses ◽  
Infrared Laser

Evolution of Direct Selective Laser Sintering of Metals

2011 ◽  
Vol 383-390 ◽  
pp. 6252-6257
Author(s):  
Francesco Cardaropoli ◽  
Fabrizia Caiazzo ◽  
Vincenzo Sergi
Keyword(s):  
Complex Geometry ◽  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Layer By Layer ◽  
Metal Powders ◽  
Additive Process ◽  
Operator Experience ◽  
Critical Phases ◽  
Time Required

Direct Metal Selective Laser Sintering (DMSLS) is a layer-by-layer additive process for metal powders, which allows quick production of complex geometry parts. The aim of this study is to analyse the improvement of DMSLS with “EOSINT M270”, the new laser sintering machine developed by EOS. Tests were made on sintered parts of Direct Metal 20 (DM20), a bronze based powder with a mean grain dimension of 20 μm. Different properties and accuracy were evaluated for samples manufactured with three different exposure strategies. Besides mechanical properties, the manufacturing process was also examined in order to evaluate its characteristics. The quality of laser sintered parts is too affected by operator experience and skill. Furthermore, critical phases are not automatic and this causes an extension of time required for the production. Due to these limitations, DMSLS can be used for Rapid Manufacturing, but it is especially suitable to few sample series.

Coincidence photoelectron spectroscopy of Ar irradiated by high-order harmonics and near infrared laser pulses

2016 ◽  
Author(s):  
Kana Yamada ◽  
Atsushi Iwasaki ◽  
Takahiro Sato ◽  
Katsumi Midorikawa ◽  
Kaoru Yamanouchi
Keyword(s):  
Photoelectron Spectroscopy ◽  
Near Infrared ◽  
Laser Pulses ◽  
Infrared Laser ◽  
High Order
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