Investigation of the dynamic mechanical analysis and mechanical response of 3D printed nylon carbon fiber composites with different build orientation

Abstract

The effect of printing angle on the mechanical behavior of 3D printed carbon fiber reinforced nylon composites is investigated. Three types of print angles, namely angular, vertical and horizontal, are considered in the present study. Dynamic mechanical analysis, and flexural and tensile tests are performed to evaluate the mechanical behavior of specimens. The dynamic mechanical analysis test reveals higher storage and loss modulus in horizontal specimens as compared with angular and vertical specimens, mainly credited with better mechanical restraints imposed by carbon fibers on the matrix movement. Higher damping capability was also noted with horizontal specimens. Flexural properties of horizontally printed specimens are better as compared with the other configurations attributed to good stress transferability between the constituents. Tensile specimens also depict higher modulus and strength for horizontally printed specimens owing to higher resistance offered by the carbon fibers to tensile loading and good compatibility of constituents. Finally, the structure–property relationships are understood by analyzing the specimens under a high‐resolution scanning microscope.

Polymer composites–Special issue review for additive manufacturing of composites

“…4 Papers in this special issue range from the use of bio and bio-inspired materials, 2,3,5-12 materials and material systems that benefit from nanoscale enhancements, [13][14][15][16][17][18][19][20][21][22][23] advances in the medical field, [24][25][26] additive material systems utilizing thermosets, [27][28][29] large scale additive manufacturing, [30][31][32] and some rather novel applications in AM. 1,[33][34][35] Several articles focus on improvements for characterization, [36][37][38][39] and quite a few seek to identify parameters to enhance the final part performance through processing improvements. [40][41][42][43][44][45][46][47][48] The studies investigating the use of biological materials and bio-inspired systems begin with a thorough review by Tao et al 3 with a special focus on natural fibers.…”

“…Papers in this special issue range from the use of bio and bio‐inspired materials, 2,3,5–12 materials and material systems that benefit from nanoscale enhancements, 13–23 advances in the medical field, 24–26 additive material systems utilizing thermosets, 27–29 large scale additive manufacturing, 30–32 and some rather novel applications in AM 1,33–35 . Several articles focus on improvements for characterization, 36–39 and quite a few seek to identify parameters to enhance the final part performance through processing improvements 40–48 …”

Frequency and deflection responses of 3D‐printed carbon fiber reinforced polylactic acid composites: Theoretical and experimental verification

“…They came to the conclusion that while the tensile strength had significantly decreased, the specific modulus had increased due to the recycled fibers. Alarifi et al [ 17 ] investigated the mechanical characteristics of CF reinforced nylon composites. According to their research, samples printed in the horizontal direction have better tensile, flexural, and dynamic mechanical properties than those printed in the vertical and angle directions.…”

Evaluation of a design for a three‐dimensional‐printed artificial bone structure

“…[9,10] Recent research findings indicate that the 3D printing of the envisioned components can be accomplished using a horizontal building orientation. [11][12][13] The results of previous investigations demonstrated that PLA/n-HA composites were highly suitable for printing scaffolds with good mechanical strength, which depends on the quantity of n-HA elements used. [14] Owing to this technology, structures with desirable characteristics, such as tailorable biodegradability, precise pore size, and high absorption, can now be created using only small amounts of the material for bone formation and osseointegrated implants.…”