Modeling and Simulation of Composite Materials for SLS-Based 3D Printing

Abstract

This paper discusses the modeling and simulation results of a new multi-material for a cost-effective Selective Laser Sintering (SLS)-based 3D printer. As this technology utilizes several materials, the mechanical property analysis of multi-materials is crucial for manufacturing an object with the desired physical characteristics. Firstly, the development of a database of the SLS 3D printing materials is accomplished, and based on the mechanical properties of materials, this optimization technique is proposed. Secondly, enhancement of physical property by stiffeners is considered and based on the stiffening technology, and an alternative optimization method proposed. Finally, two different material minimization methods are discussed in this research. The first method is based on the embedded materials with desired mechanical properties for enhancing the mechanical properties of the printed objects, which are twice optimized by this method with increased material saving. The second method is designed to use stiffeners to improve the stiffness characteristics of the materials, and then, perform material optimization. This method is effective with more suitability to complex composite geometries. Thus, the methods help to reduce materials used as well as the production cost in 3D printing technology.

Surface Analysis and Digitization of Components Manufactured by SLM and ADAM Additive Technologies

“…The printed components are almost completely dense. With this technology, no binders are required, furthermore, the mechanical properties and accuracy are better compared to SLS [11], [12]. The melting process occurs within a highly controlled atmosphere.…”

Study of Coatings Intended for Active Parts of Forming Tools Produced by Powder Metallurgy

“…Surface treatment of materials clearly improves the quality of products. Surface treatment of forming tools such as punches (cutters), molds, benders, dies and lower dies using PVD (physical vapor deposition) coatings with low friction and high hardness provides increased durability and productivity [12,13]. The thin coating layer prevents the cut material from sticking to the punch, facilitates the pulling out of the cut material when the punch is retracting, and prevents the tool from seizing up.…”

“…Coating technologies are the subject of continuous research because they are essential for the realization of innovative products [13]. Experimental coatings were formed by the method of thin layers applied in a vacuum, using methods of the so-called plasma cathodic evaporation and magnetron sputtering.…”