Search results for " texturing."
showing 3 items of 3 documents
Sviluppo e rappresentazione digitale di superfici architettoniche complesse per la documentazione e il restauro
2015
Questa ricerca presenta la metodologia che è stata utilizzata nella rappresentazione delle colonne del Tempio C nel parco archeologico di Selinunte (TP). Tale metodologia – basata sull'impiego di superfici matematiche ausiliarie e tools di modellazione NURBS – ha permesso di sviluppare sul piano le superfici mesh di modelli 3D texturizzati realizzati da dati acquisiti con tecniche di rilevamento laser scanning e fotogrammetriche.
Comportement en fatigue thermomécanique à haute température d’un système barrière thermique texturé par laser
2020
In service life of Thermal Barrier Coating (TBC) systems for blade applications can be limited by the top-coat (TC) spallation under thermo-mechanical fatigue (TMF) loadings. To improve its TMF life, laser texturing at the bond-coat/top coat interface in the CMSX-4 Plus / γ-γ’ BC/ EB-PVD TC system has been investigated.Thanks to the study of the laser-matter interaction, it seems that the different Ni-based single crystal superalloys have similar laser ablation behaviors and they present almost no sub-surface damage after ablation. Nevertheless, the formation of melted matter near created cavities, possibly recrystallized, is often observed.Different patterns (holes, lines, grids) have been…
Optimisation of TA6V alloy surface laser texturing using an experimental design approach
2008
International audience; Active surfaces of plastic injection moulds are nowadays textured using classical techniques (chemical etching or EDM). Replacement of these technologies by a laser technology introduces a big flexibility: absence of mechanical contact with the tool, decrease of the effluent's volume and a big machining precision, even in the case of the complex forms as injection moulds for example. This paper reports the experimental study of the surface laser texturing of TA6V alloy. The influence of the operating factors on the laser texturing process has been studied using two experimental approaches: Taguchi methodology and response surface methodology (RSM). Empirical models h…