Analysis of Metrological Quality and Mechanical Properties of Models Manufactured with Photo-Curing PolyJet Matrix Technology for Medical Applications.

Tomasz Kozior,Paweł Zmarzły,Damian Gogolewski,Jerzy Bochnia,Paweł Szczygieł,Mateusz Rudnik,Wiktor Szot,Mateusz Musiałek

doi:10.3390/polym14030408

Abstract

This paper presents the metrological quality and mechanical properties of models in the form of hook holders manufactured from MED610 polymer material using PolyJet Matrix (PJM) technology. Measurements in the dimensional and shape analysis were made using the optical method with a microscope. The mechanical test was estimated by static tensile testing of the fabricated parts. A comprehensive approach to both the analysis of test results based on standardized samples and real hook models makes the presented results of great scientific and engineering value and creates the possibility of practical use in the medical industry, which has not been so comprehensively presented in the currently published research papers. Analyzing the results of measurements of the geometrical characteristics of the elements, it can be concluded that the PolyJet Matrix 3D printing technology has demonstrated a high level of precision in manufacturing the prototype parts. The static tensile test of samples, taking into account the printing directions, showed a high anisotropy of mechanical properties. The results of both strength and simulation tests indicate that it is necessary to assume a relatively high safety factor, the value of which depends on the direction of printing, which, in the case of such a responsible medical application, is very important.

Highlights

With the development of industry, the use of additive technologies has become increasingly common
From the results of the static tensile tests performed on the hook holders (Table 5), it was observed that the value of the mean maximum load force on hook holder B is
Static tensile testing of samples printed in three directions (Table 6) showed that samples printed in the OX direction had the highest value Rm and this was 226.01% higher than the lowest value Rm in samples printed in the OZ direction

Summary

Introduction

With the development of industry, the use of additive technologies has become increasingly common. Three-dimensional printing technologies are one of the areas that significantly contribute to the development of science, including medical sciences. Innovations in the field of medical science using 3D printing concern components and assemblies as well as the materials from which they are made. 3D printing technology has gained great interest in many areas of production of components, including cylindrical ones [9,10]. It is known as additive manufacturing, which builds physical objects by applying successive layers of material of a specified thickness using a printer-understandable code generated by a so-called Slicer [11–13]. Rapid prototyping is supported by reverse engineering and has applications in the field of medical science. More and more often in medical applications, a combination of several technologies is used, such as 3D printing and electrospinning [15], where the PJM technology has a very large potential application [16]

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Results

Discussion

Conclusion