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.
Computer-Aided System of Virtual Testing of Gas Turbine Engines
The article describes the concept of a virtual lab that includes subsystem of gas turbine engine simulation, subsystem of experiment planning, subsystem of measurement errors simulation, subsystem of simulator identification and others. The basis for virtual lab development is the computer-aided system of thermogasdynamic research and analysis “ASTRA”. The features of gas turbine engine transient modes simulator are described. The principal difference between the simulators of transient and stationary modes of gas turbine engines is that the energy balance of the compressor and turbine becomes not applicable. The computer-aided system of virtual gas turbine engine testing was created using the developed transient modes simulator. This system solves the tasks of operational (throttling, speed, climatic, altitude) characteristics calculation, analysis of transient dynamics and selection of optimal control laws. Besides, the system of virtual gas turbine engine testing is a clear demonstration of gas turbine engine working process and the regularities of engine elements collaboration. The interface of the system of virtual gas turbine engine testing is described in the article and some screenshots of the interface elements are provided. The developed system of virtual gas turbine engine testing provides means for reducing the laboriousness of gas turbine engines testing. Besides, the implementation of this system in the learning process allows the diversification of lab works and therefore improve the quality of training.