PRESENTATION OF THE FIRST-YEAR PH.D. STUDENTS

Transcription

1 Radek Vrána 24.september 2014, FSI VUT v Brně, Czech Republic

2 Content of presentation Introduce myself Diploma thesis Disertation Education activity 1/10

3 Introduce myself Ing. Radek Vrána Room : D5/470 y126462@stud.fme.vutbr.cz Dept. of Reverse Engineering and Additive Technologies Bachelor's Study Brno University of Technology, Faculty of Mechanical Engineering. Study Programme : Engineering Bachelor s thesis : Utilization of the modern method for a production of the prototype of the hair dryer handle Master s Study Brno University of Technology, Faculty of Mechanical Engineering Study Programme: Mechanical Engineering 2014 Dean s awards for excellent study results and active participation in research activities 2/10

4 Selective Laser Melting technology Metal additive manufacturing Up tu 180 production parameters main parameters : laser speed, focus, power Manufacturing problems: 3% porous material Sticking powder 3/10

5 Diploma thesis Design of lattice structures for additive manufacturing using Selective Laser Melting technology Supervisor: Ing. Daniel Koutný, Ph.D. Abstract: This paper analyze the quality of very small trusses that are basic members of these cells and evaluates its influence on mechanical properties. Using the proposed test specimens it was found that real dimensions of the trusses varies with size and orientation to the base platform. The obtained real dimensions of trusses were used as correction factors for the results of tensile tests of special truss specimens. α Test speciment Lattice structure 4/10

6 [mm] Diploma thesis 3D measurement Measurement on Atos Triple III Scan 1,2 1 0,8 0,6 0,4 Nom.hodnoty 90min (0,4-1) 90 - d in - S01 y = 0,9358x - 0,0716 R² = 0,9971 0,2 y = 0,5188x + 0,1001 R² = 0, ,2 0,4 0,6 0,8 1 [mm] 1,2 Inspection in GOM Inspect Correction of beam dimension 5/10

7 Diploma thesis Mechanical testing Tensile and compression test Compression test Tensile test 6/10

8 [N] Diploma thesis Prediction mechanical properties Compere FEM analysis with real mechanical properties BCC_20_4_0, ,0 0,5 1,0 1,5 2,0 2,5 3,0 3,5 [mm] 01_0,5mm 02_0,5mm 04_0,5mm 05_0,5mm MKP Compere FEM analysis with real mechanical properties FEM analysis 7/10

9 Dissertation Optimization of lattice structures for special parts made by Selective Laser Melting technology Supervisor: doc. Ing. David Paloušek, Ph.D. Changing the process parameters affects the properties of the object The main production parameters laser speed, laser focus and laser power Orientation and shape of the rods in the lattice structures Methodology of design structured parts in form of proposed software 8/10

10 Dissertation Results from the Diploma thesis Proposed software with FEM analysis and topology optimalization Topology optimization 9/10

11 Education activity Educational activity 3CD - CAD ZM1 - Parametric Modeling - Inventor, Catia, Rhinoceros ZPP - Polymer Prototypes and Rapid Prototyping 10/10

12 Thank you for your attention Radek Vrána 24.september 2014, FSI VUT v Brně, Czech Republic