Shearing Strength Test of Ortopedic Titanium Alloy Screw Produced in the Process of 3d Technology Printing

Abstract

The aim of the present article is the assessment of technical shear resistance (technological shear) of orthopedic screw made of titanium alloy Ti6Al4V, produced using incremental technology in the process of 3D printing process. The first part of the work presents incremental techniques in production engineering. The second part of the present work contains a specification of the 3D printing process of samples as well as the description of the used material. The fundamental part of the article is composed out of endurance tests for orthopaedic screws as well as the analysis of the obtained results and conclusions. The method of incremental production SLM using SLM 280 HL metal printer was used during the technological process. The resistance tests were performed using ZWICK/ROELL Z150 machines. Identical endurance trials were performed for monolithic bars made of titanium alloys (of bar core size ) made on a wire electric discharge machine Sodick SL600Q for comparative purposes. The obtained test results enabled comparative assessment of the value of shear resistance R t in the conditions of technological shear. According to the performed tests, the shear resistance R t of orthopaedic screws is nearly 33% lower than of monolithic bars of the same core size.

Digital Shape and Geometric Dimension Analysis of Polymer Fuel Tanks

“…Optical digitization is used in a wide variety of applications. The specific applications of the measurement process using 3D measurement systems are: light structure systems, wind turbine, cutting parts, analysis of tool wear, additive manufacturing (AM) and CNC machine tools evaluation, forging defects, layer inspection of ceramic materials after milling and another like: welding, verification of ram-press pipe, digitizing press parts and tools or analysis of relation between the 3D printer laser beam power and the surface morphology [10][11][12][13].…”