Mechanical characterization and experimental modal analysis of 3D Printed ABS, PC and PC-ABS materials

Abstract

Additive manufacturing (AM) process builds the parts, layer by layer precisely from Computer-Aided Design (CAD) models, whereas traditional subtractive manufacturing process removes layers from materials to attain the desired shape. Of late Rapid prototyped (RP) parts are used for the direct production of components for manufacturing and testing in the industries. Understanding material, machine used along with the process variables that affect the strength of the final part gains importance as the parts can be printed directly from CAD data and effectively integrated into structures. The main aim of this investigation is to present the mechanical characterization and free vibration analysis of various 3D printed Engineering Plastic Materials. Acrylonitrile Butadiene Styrene (ABS), Polycarbonate (PC), and Polycarbonate-Acrylonitrile Butadiene Styrene (PC-ABS) materials are used in this study. Spools are prepared from plastic pellets using wire extruder. Tensile tests have been performed on dog bone specimens to evaluate strength, fractured specimen's surfaces which are further evaluated using Field Emission Scanning Electron Microscope (FESEM) to explore fracture of the raster and bonding between layers. From the experimental results it's noticed that the PC-ABS material exhibits improved elastic limit and load-carrying capacity compared with ABS and PC. Three types of beams are fabricated using different materials and modal analysis has been conducted to predict the stiffness of beams in terms of natural frequencies under clamped free (CF) and clamped clamped (CC) end conditions. Higher natural frequencies observed with PC-ABS is compared with the rest of the materials.

Polymer 3D Printing Review: Materials, Process, and Design Strategies for Medical Applications

“…For instance, the low tensile strength measurement of 15 MPa for ABS was due to testing in the transverse loading direction compared to the higher measurements of tensile strength closer to 30 MPa based on the build layer orientation. Similar differences were observed for polycarbonate materials based on their processing and chemicals used to manufacture the material [ 35 , 36 ]. One study concluded that a blend of polycarbonate referred to as a bio-based polycarbonate had a slightly higher strength of 65 MPa and significantly higher elastic modulus of 2100 MPa than a polycarbonate manufactured using fossil fuels with 62 MPa strength and 1500 MPa elastic modulus [ 35 ].…”

“…In Table 1 , multiple studies are reported for comparisons of ABS materials that all demonstrated similar, but slightly different mechanical properties [ 34 , 35 , 36 ], such as tensile strength ranging from 15 MPa to 38 MPa. These differences are accounted for in part because of the different processing temperatures and printing parameters used to construct parts, the slightly different proportions of monomers in ABS’s structure, and the tested part’s orientation.…”

Polymer Composites Based on Polycarbonate (PC) Applied to Additive Manufacturing Using Melted and Extruded Manufacturing (MEM) Technology

“…Unfortunately, the polymer components still do not show the expected properties; therefore, high functionality of the material can be achieved by strengthening the polymer matrix. Many scientists have attempted to combine the properties of PC with such a well-known material as acrylonitrile-butadiene-styrene copolymer [ 14 , 15 , 16 , 17 , 18 ] and poly(ethylene terephthalate) [ 19 ].…”

Personalized Anti-Vibration Protection for Telematics Devices in Urban Freight Transport Vehicles

“…Telematics have an impact on three major areas: social (a decreasing number of accidents), economic (a fixed and operating costs reduction) and environmental (a demand for energy or lowering pollution emissions, mainly CO 2 and NOx) [16] (pp. [50][51][52][53][54][55]. Without such systems, the efficiency and functioning of urban freight transport would stay at low level.…”

“…Beside standard filaments, references indicate composites as printing material [35,43,47]. The market also offers other filaments with special properties: see [43,51,52].…”