scholarly journals Mechanical Properties of Remote-Laser Cut CFRP and Thermographic Laser-Process Monitoring

2020 ◽  
Vol 11 (08) ◽  
pp. 560-575
Author(s):  
Michael Rose ◽  
Sebastian Schettler ◽  
Florian Klemm ◽  
Eckhard Beyer ◽  
Martina Zimmermann
Keyword(s):  
Mechanical Properties ◽  
Process Monitoring ◽  
Laser Process

Microstructures and mechanical properties of metallic NiCrBSi and composite NiCrBSi–WC layers manufactured via hybrid plasma/laser process

2011 ◽  
Vol 257 (12) ◽  
pp. 5132-5137 ◽  
Author(s):  
Nicolas Serres ◽  
Françoise Hlawka ◽  
Sophie Costil ◽  
Cécile Langlade ◽  
Frédérique Machi
Keyword(s):  
Mechanical Properties ◽  
Laser Process ◽  
Plasma Laser ◽  
Hybrid Plasma ◽  
Microstructures And Mechanical Properties

Microstructure and mechanical properties of flame-sprayed PEEK coating remelted by laser process

2009 ◽  
Vol 66 (3) ◽  
pp. 248-253 ◽  
Author(s):  
Chao Zhang ◽  
Ga Zhang ◽  
Vincent JI ◽  
Hanlin Liao ◽  
Sophie Costil ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Laser Process ◽  
Microstructure And Mechanical Properties ◽  
Peek Coating

scholarly journals Powder bed selective laser process (sintering/melting) applied to tailored calcium phosphate-based powders

2021 ◽  
Author(s):  
Pedro Navarrete-Segado ◽  
Christine Frances ◽  
Mallorie Tourbin ◽  
Christophe Tenailleau ◽  
Benjamin Duployer ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Calcium Phosphate ◽  
Calcium Phosphates ◽  
Process Window ◽  
X Ray Diffraction ◽  
Powder Bed ◽  
Laser Process ◽  
Whole Process ◽  
Vibrational Spectroscopies ◽  
Complex Parts

This paper focuses on the tailoring of calcium phosphate powders for their use as powder bed selective laser process feedstock. Hydroxyapatite and chlorapatite were used as starting powders for the preparation of different blends through the addition of graphite as a laser absorptance additive. A methodical study was conducted to compare the processing windows of the blends containing different amounts of graphite through the laser patterning of circular samples. It was found that the addition of graphite increases the process window of the powder blends being the powder without additive non processable. Hydroxyapatite showed a clear phase transition (decreased when using higher volumetric energy density) into other calcium phosphate phases while chlorapatite was demonstrated to be thermally stable during the whole process (examined through X-ray diffraction and vibrational spectroscopies). In parallel, the study evaluating the powder blend composed of hydroxyapatite and graphite for the production of solid and complex parts was carried out although it required long printing times. The productivity of the process was improved by modification of printing parameters. Then, a series of solid samples were produced for the analysis of the microstructure and mechanical properties. High interconnected porosity was observed in the samples which could improve the bioactivity of the bioceramic scaffolds. A post-treatment of the parts increased their proportion in the hydroxyapatite phase and their mechanical properties. These results are expected to contribute to the application of powder bed selective laser processing of calcium phosphates powders toward bone tissue engineering.

Tribology and mechanical properties of excimer laser-processed Ti–Si3N4 surfaces

1995 ◽  
Vol 10 (8) ◽  
pp. 1857-1860 ◽  
Author(s):  
T.R. Jervis ◽  
J-P. Hirvonen ◽  
M. Nastasi ◽  
H. Kung
Keyword(s):  
Mechanical Properties ◽  
Laser Radiation ◽  
Failure Mode ◽  
Excimer Laser ◽  
Wear Mechanism ◽  
Transfer Film ◽  
Laser Process ◽  
Excimer Laser Radiation ◽  
Pin On Disk

Titanium films were mixed, using excimer laser radiation, into the surface of bulk Si3N4 materials. The tribological and mechanical properties of these surfaces were then evaluated using pin-on-disk and nanoindenter techniques, respectively. Reduced friction and a change in the wear mechanism that resulted in a more benign failure mode were observed. These results are interpreted as resulting from the establishment of a transfer film, changes in the compliance of the surface which reduces instantaneous stresses in the surface, and toughening of the surface, all results of the laser process.

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