Investigation of the shear properties of 3D printed short carbon fiber-reinforced thermoplastic composites

Journal of Thermoplastic Composite Materials ◽

10.1177/08927057211063399 ◽

2022 ◽

pp. 089270572110633

Author(s):

Hamed Tanabi

Keyword(s):

Carbon Fiber ◽

Polymer Materials ◽

Image Correlation ◽

Fiber Reinforced ◽

Shear Properties ◽

Short Carbon Fiber ◽

Fused Deposition ◽

3D Printed ◽

Carbon Fiber Reinforced ◽

Short Carbon

Short fiber-reinforced 3D printed components are high performance materials with a wide range of potential applications in various industries ranging from aerospace to automotive. Mechanical characterization of 3D printed short carbon fiber polyethylene terephthalate and acrylonitrile butadiene styrene parts are presented under the application of shear load in this study. The anisotropy properties of both composite and polymer materials were investigated by printing samples at two different orientations, using fused deposition modeling (FDM) technique. The fabricated samples were subjected to tensile and shearing loads while 2D digital image correlation (DIC) was used to measure full-field strain on the specimen. The obtained results revealed a noticeable anisotropy in shear properties as the function of printing orientation. Moreover, it found that using carbon fiber-reinforced PET results in higher elastic modulus, tensile, and shear strengths up to 180%, 230%, and 40% compared to ABS.

Download Full-text

Effect of Geometric Parameters and Moisture Content on the Mechanical Performances of 3D-Printed Isogrid Structures in Short Carbon Fiber-Reinforced Polyamide

Journal of Materials Engineering and Performance ◽

10.1007/s11665-021-05659-7 ◽

2021 ◽

Author(s):

Valerio Di Pompeo ◽

Archimede Forcellese ◽

Tommaso Mancia ◽

Michela Simoncini ◽

Alessio Vita

Keyword(s):

Carbon Fiber ◽

Moisture Content ◽

Geometric Parameters ◽

Fiber Reinforced ◽

Compression Tests ◽

Short Carbon Fiber ◽

3D Printed ◽

Carbon Fiber Reinforced ◽

Mechanical Performances ◽

Short Carbon

AbstractThe present paper aims at studying the effect of geometric parameters and moisture content on the mechanical performances of 3D-printed isogrid structures in short carbon fiber-reinforced polyamide (namely Carbon PA). Four different geometric isogrid configurations were manufactured, both in the undried and dried condition. The dried isogrid structures were obtained by removing the moisture from the samples through a heating at 120 °C for 4 h. To measure the quantity of removed moisture, samples were weighted before and after the drying process. Tensile tests on standard specimens and buckling tests on isogrid panels were performed. Undried samples were tested immediately after 3D printing. It was observed that the dried samples are characterized by both Young modulus and ultimate tensile strength values higher than those provided by the undried samples. Similar results were obtained by the compression tests since, for a given geometric isogrid configuration, an increase in the maximum load of the dried structure was detected as compared to the undried one. Such discrepancy tends to increase as the structure with the lowest thickness value investigated is considered. Finally, scanning electron microscopy was carried out in order to analyze the fractured samples and to obtain high magnification three-dimensional topography of fractured surfaces after testing.

Download Full-text

Tribological behavior of surface textured short carbon fiber reinforced nylon composites fabricated by 3D printing techniques

Journal of Tribology ◽

10.1115/1.4050372 ◽

2021 ◽

pp. 1-14

Author(s):

Ming Luo ◽

Qinghao He ◽

Hongjian Wang ◽

Li Chang

Keyword(s):

Carbon Fiber ◽

3D Printing ◽

Polymeric Materials ◽

Fused Deposition Modelling ◽

Fiber Reinforced ◽

Surface Textures ◽

Short Carbon Fiber ◽

Fused Deposition ◽

Carbon Fiber Reinforced ◽

Short Carbon

Abstract In this paper, short carbon fiber reinforced nylon composites were fabricated using the fused deposition modelling (FDM) technology. In particular, different surface textures, namely convex squares and triangles, were created by using the printing method. It was found that the fiber reinforcements could effectively enhance the load-carry capacity of the printed polymeric materials. Moreover, the tribological performance of the composites can be further improved with the induced surface textures. Microscopic observations revealed that the surface textures are particularly beneficial for the wear reduction by collecting hard wear debris such as broken fibers and thus diminishing the three-body abrasive wear. The work has demonstrated that 3D printing technology has the great potential for developing new wear-resistant engineering materials by controlling and creating the desirable compositions and geometric structures/textures simultaneously.

Download Full-text