Integrated system for design and products quality control based on additive technologies for high-tech industries
The article describes the functional structure of an integrated computer system that allows choosing the equipment for 3D printing on the basis of information and mathematical models to study the quality of printed high-tech polymeric and ceramic materials, as well as the necessary mode of its functioning. The integrated system includes the modules for selecting 3D printing technologies (extrusion, sintering) and 3D printers, a module for searching for the parameters of equipment for obtaining products of a given quality, a visualization module for simulation results, and a module for generating a product passport. The integrated system can be used as a training and educational system for training specialists in the field of additive technologies, taking into account the study of the complete life cycle of the synthesis of complex products (from studying the properties of composite materials and designing prototypes of products to assessing the quality of printed products). Testing of the computer system, which confirmed its operability, was carried out on the basis of the Engineering Center of SPbSIT (TU), the corporation Klöckner Pentaplast and Virial Ltd. (St. Petersburg). The use of an integrated system at enterprises of high-tech industries allows us to solve the problem of designing and managing the quality of complex products, saving raw materials and materials, which reduce the cost and time of production of high technology products.
Advances in 3D Printing & Additive Manufacturing Technologies
Influence of Process Parameters on Tensile Strength of Additive Manufactured Polymer Parts using Taguchi Method -- Determination and Comparison of the Anisotropic Strengths of Fused Deposition Modeling P400 ABS -- Estimating the Effect of Process Parameters on Build Time and Model Material Volume for FDM Process Optimization by Response Surface Methodology and Grey Relational Analysis -- Current Trends of Additive Manufacturing in the Aerospace Industry -- Influence of Oxygen Partial Pressure on Hydroxyapatite Coating of Additive Manufactured component by Pulsed Laser Deposition -- Electro Discharge Machining of Ti-alloy(Ti6Al4V) and 316LStainless Steel and Optimization of Process Parameters by Grey Relational Analysis (GRA) Method -- Multi-Objective Optimization of Mechanical Properties of Aluminium 7075 Based Hybrid Metal Matrix Composite using Genetic Algorithm -- A Review on Status of Research in Metal Additive Manufacturing -- Multi Response Optimization of Nd: YAG Laser for Micro Drilling of 304Stainless Steel using Grey Relational Analysis -- Additive Manufacturing at French Space Agency with Industry Partnership -- Wear Characterization of Direct Steel –H20 Specimens Produced by Additive Manufacturing Techniques -- Rapid Manufacturing of Customized Surgical Cutting Guide for the Accurate Resection of Malignant Tumor in the Mandible -- Implant Analysis on the Lumbar-Sacrum Vertebrae using Finite Element Method -- An Automated Acupressure Glove For Stress & Pain Relief Using 3D Printing -- Development and Optimization of Dental Crown using Rapid Prototyping Integrated with CAD.
New Alumosilicate Fillers Based on Sedimentary Rocks for Asphalt Concrete
Asphalt concrete is the most common material for highway and motorway construction. The quality of asphalt is determined, to a large extent, by properties of asphalt binder. Fillers, which are mineral powders from carbonate rocks and aggregates fines, such as limestone and dolomite, are often used in the composition of bitumen mastics affecting the performance of asphalt. This article explores the feasibility of using the fines of aluminosilicate sedimentary rocks as fillers. These materials are composed of clay minerals, which change their properties upon the contact with water. Normally, the use of such fillers is restricted because of poor water resistance and swelling of asphalt concrete. In order to improve the performance of these fillers, the thermal modification at moderate temperatures of 500–600 C has been proposed. Such treatment provides sufficient structural stability of obtained materials and results in the reduction of water absorption of asphalt, improved water resistance (up to 2.5 times) and also, in reduced swelling (up to 9 times). It has been demonstrated that improvement in the filler performance can be achieved by a heat treatment. Such treatment induces changes in the mineral composition and converts the structure of clay minerals into the frame structure of zeolite, as confirmed by X-ray diffraction and infrared spectroscopy. Due to thermal treatment, there is a change in the acid-base properties of the surface of the filler, which is reflected in the profiles of the main adsorption centers. As a result, due to chemisorption, the modified aluminosilicate fillers are able to interact with bitumen. The application of new filler materials in asphalt concrete enables to enhance the performance.