Fera, M. Macchiaroli, R. Fruggiero, F. Lambiase, A.
Published in
The International Journal of Advanced Manufacturing Technology
Since the early days of industrial manufacturing, decisions like the analysis of economic or financial break even and the determination of optimal production level and similar problems were taken using the number of parts as the main decision driver. While in the last years the manufacturing community was simply observing the evolutions of the addi...
Roy, Souvik Juha, Mario Shephard, Mark S. Maniatty, Antoinette M.
Published in
Computational Mechanics
A novel approach and finite element formulation for modeling the melting, consolidation, and re-solidification process that occurs in selective laser melting additive manufacturing is presented. Two state variables are introduced to track the phase (melt/solid) and the degree of consolidation (powder/fully dense). The effect of the consolidation on...
Malekipour, Ehsan El-Mounayri, Hazim
Published in
The International Journal of Advanced Manufacturing Technology
The powder bed fusion additive manufacturing process enables fabrication of metal parts with complex geometry and elaborate internal features, the simplification of the assembly process, and the reduction of development time; however, its tremendous potential for widespread application in industry is hampered by the lack of consistent quality. This...
Ortega Gomez, Arturo Corona Galvan, Luis Deschaux-Beaume, Frédéric Mezrag, Bachir Rouquette, Sébastien
A 3D print device using a cold metal transfer arc welding station to melt a metallic filler wire is developed to build aluminium part by optimising the process parameters. First tests achieved using standard pre-recorded process parameters allow to study the effect of the travel speed and the average welding power on the geometrical characteristics...
Kim, Duck Bong
Published in
Journal of Intelligent Manufacturing
This paper describes an approach that can compose predictive models from disparate knowledge sources in smart manufacturing environments. The capability to compose disparate models of individual manufacturing components with disparate knowledge sources is necessary in manufacturing industry, because this capability enables us to understand, monitor...
Danaci, Simge
In this doctoral study, the three dimensional fibre deposition (3DFD) technique has been applied to develop and manufacture advanced multi-channelled catalytic support structures. By using this technique, the material, the porosity, the shape and size of the channels and the thickness of the fibres can be controlled. The aim of this research is to ...
Keller, Trevor Lindwall, Greta Ghosh, Supriyo Ma, Li Lane, Brandon M Zhang, Fan Kattner, Ursula R Lass, Eric A Heigel, Jarred C Idell, Yaakov
...
Published in
Acta materialia
Numerical simulations are used in this work to investigate aspects of microstructure and microseg-regation during rapid solidification of a Ni-based superalloy in a laser powder bed fusion additive manufacturing process. Thermal modeling by finite element analysis simulates the laser melt pool, with surface temperatures in agreement with in situ th...
Lambert, Océane
En vue de leur refroidissement, les parois de chambres de combustion aéronautiques sont perforées de trous à travers lesquels de l’air plus froid est injecté. La paroi est ainsi refroidie par convection et un film isolant est créé en surface chaude (film cooling). Cette thèse a pour objectif d’utiliser les possibilités de la fabrication additive po...
Patra, Siddhartha Chanda, Abhijit
Published in
International Journal of Applied and Computational Mathematics
The correlation between the stiffness and porosity of the porous material is studied for many decades. In most cases the goal was to propose an equation correlating the fractional change in elastic modulus to the net porosity for a given pore geometry (often spherical). The mechanical behavior of the porous material is often assumed to be isotropic...
Rohde, S. Cantrell, J. Jerez, A. Kroese, C. Damiani, D. Gurnani, R. DiSandro, L. Anton, J. Young, A. Steinbach, D.
...
Published in
Experimental Mechanics
As 3D printing has increased in popularity, it has become more important to understand the properties and characteristics of the parts being produced. The material properties of 3D printed parts are not equivalent to the bulk properties of the materials used to print them. The nature of 3D printing, with varying raster and build orientations, resul...
