Determination of Mechanical Properties of Plastic Components Made by 3D Printing

Abstract

The presented article deals with the determination of selected mechanical properties of additive materials used for 3D printing (PETG, PLA, ABS, ABS +, PLA ESD, ASA, PC / ABS). Due to the fact that 3D printing has exploded over recent years and additive manufacturing has become popular in some industries, the quality of input materials and their mechanical properties is extremely important. We used 3D printer Original Prusa MK3 to prepare samples for testing. Individual samples printed from all above mentioned materials were analyzed using selected mechanical tests (static tensile test, hardness tests). In the static tensile test, selected parameters (tensile strength limit, tensile modulus, elongation) were determined for all additive samples, which were statistically processed. The parameters for two methods of measuring hardness were also statistically evaluated, namely Shore and ball indentation. All tested additive materials were compared with the aim of obtaining the final ranking (point evaluation of tested materials with quantification of price costs). The best properties after the performed tests were achieved by the additive material PLA Filament Plasty Mladeč. Aditive manufacturing 3D printing Fused filament fabrication Mechanical properties Tensile test Hardness tests

Investigation of bio-based and recycled printing materials for additive manufacturing

“…The measured tensile strength for PETG are significantly below the manufacturer's specifications. This significant deviation cannot be confirmed from other studies [23] and is probably due to incorrect 3D printing parameters. The measured tensile strength for rPLA deviate from the data sheet, but agree with the results of other studies [24].…”

Challenges in Tensile Testing of Thermoplastic Composites Reinforced with Chopped Carbon Fibre Produced by Fused Filament Fabrication Method

“…The advantages of the FFF technology are low investment and operating costs, a wide range of usable materials, ease of working with them, and relatively high printing accuracy and reliability [29][30][31]. The disadvantages of the method are warping caused by cooling of the deposited material, delamination, lower strength of objects compared to conventional technologies, and stringing [32].…”

Analysis of the Substitutability of Conventional Technologies in the Design of a Clamping Vise for Measurement Using an Optical Measuring System

“…It is highly resistant to abrasive wear but at the same time, it is abrasive. Therefore, it is recommended to print parts that are in contact with other materials, as a result of which they are subjected to greater wear from pure nylon and the remaining structural parts from Onyx [11,12]. It is a material with good machinability.…”

“…These include, for example, rotary tables, machine vices, chucks, clamping mandrels, etc. [10,11,12]. They are used for clamping technologically and sha-pesimilar parts of different sizes, on different types of machine tools.…”