Results of the study of surface roughness of the aircraft engine blade model, produced with various methods of rapid prototyping are presented. Blade models were made with two incremental methods of rapid prototyping: stereo lithography (SLA-250 device) and three-dimensional printing (Z510 Spectrum printer). In incremental methods of rapid prototyping a model is formed by hardening of consecuti...

nanoscale science and technology has today mainly focused on the fabrication of nano devices. in this paper, we study the use of lithography process to build the desired nanostructures directly. nanolithography on polymethylmethacrylate (pmma) surface is carried out by using atomic force microscope (afm) equipped with silicon tip, in contact mode. the analysis of the results shows that the dept...

Hydroxyapatite bioceramic was used for the manufacture of an orbital floor prosthesis from spiral CT data acquired transaxially at 1-mm beam collimation, pitch of 1, and 0.2-mm reconstruction intervals. CT data were converted to vector file format for subsequent prosthesis manufacture on a stereo-lithography machine. The orbital floor prosthesis was engrafted onto an acrylic model of the orbit ...

1. Introduction Current rapid prototyping techniques are of limited use in the early phases of design. In order to establish a more dynamic and effective means, the concept of augmented prototyping recently gained interest [Stork et al., 2002][Verlinden et al., 2003]. The concept of Augmented Prototyping combines Rapid Prototyping techniques to obtain 3D physical objects (e.g. Stereo lithograph...

A new method of making 3-D objects is proposed. A discharge lamp is used as a UV light source, and to make the fabrication time shorter, multiple spots exposure using optical fibers is employed. The light is distributed to some optical fibers. The output side of each fiber is arrayed linearly and the emitted lights are focused on the surface of the photosensitive resin. As the fiber array is ra...

Based on STL (stereo lithography) format file and with Microsoft Visual C++ 6.0 programming language, a 3D printing slicing software appropriate for the surface strengthening of parts has been developed, which includes three functions: model import, data export. Through grouping triangle facets before slicing, judgment times relationship between cutting planes are reduced, efficiency is improve...

Abstract. This paper describes the Charter on preservation of digital heritage and it also presents five main printing technologies, FDM (Fused Deposition Modeling), SLA (Stereo Lithography Apparatus), DLP (Digital Light Processing), LCD (Liquid Crystal Display) SLS (selective laser sintering) technology. Besides, It a methodology to process restoration porcelain bowl through three-dimensional ...