Interlaminar shear strength of continuous carbon fiber reinforced thermoplastic composites manufactured by 3D printing

Dutra, Thiago Assis; Ferreira, Rafael Thiago Luiz; Resende, Hugo

doi:10.26678/abcm.cobem2017.cob17-0282

Cited by 11 publications

(11 citation statements)

References 6 publications

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“…However, the majority of the continuous fibre printing data were obtained by various users of the commercial Markforged printer with the associated limitations in terms of material and process. Investigations have been conducted on the performance of 3D printed continuous fibre reinforced nylon parts produced by the Markforged printer using the Markforged supplied prepregs alone [160,29,109,44,67,80,1,11,14,36,35,127,130,46,107,113,32,108,165,17,124,118,176,61,114,52,4]. By changing the number of fibre layers, fibre types and the infill patterns, different mechanical properties were obtained.…”

Section: Mechanical Performancementioning

confidence: 99%

Material extrusion additive manufacturing of continuous fibre reinforced polymer matrix composites: A review and outlook

Zhuo

Ashcroft

et al. 2021

Composites Part B: Engineering

163

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Section: Mechanical Performancementioning

confidence: 99%

Material extrusion additive manufacturing of continuous fibre reinforced polymer matrix composites: A review and outlook

Zhuo

Ashcroft

et al. 2021

Composites Part B: Engineering

163

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“…It was observed that the use of Kevlar and fiberglass greatly increased the impact performance and, in some cases, they showed a substantially higher performance than conventional prepreg materials. Recent work results were summarized in a table by Dutra et al, 24 who also carried out experimental tests to characterize the general mechanical properties of CF-reinforced Nylon-based composites, 25 which have supported the development of a more suitable failure criteria for this kind of material. 26 From previous work, it was overall observed for fiberglass and short CF reinforced polyamides that tensile strength and modulus exponentially decrease with water content, [27][28][29][30][31] and elongation at break increase.…”

mentioning

confidence: 99%

Moisture effect on the mechanical properties of additively manufactured continuous carbon fiber‐reinforced Nylon‐based thermoplastic

et al. 2020

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Additively manufactured composites have been demonstrating promising results with the development of new materials of high mechanical performance, which draws attention from several fields, for example, biomedical, electronics and aeronautics. However, as such materials are based on novel technologies, it is necessary to better understand their resulting characteristics and properties. For instance, evaluating the effect of environmental conditions on their mechanical performance is important, especially when moisture‐sensitive polymers such as polyamide (PA) are employed as matrix. This work aims to understand and to characterize the moisture effect on the mechanical properties of additively manufactured Nylon and continuous carbon fiber (CF)‐reinforced Nylon‐based thermoplastic. Tensile and compressive tests were carried out in accordance with ASTM standards for the printed samples at their maximum moisture content and for samples submitted to drying after the saturated condition. Moreover, moisture absorption and swelling behaviors were assessed and discussed. The experimental results showed that moisture significantly affects the fiber/matrix interface, as well as the adhesion between printed filaments. These changes led to a decrease in the general mechanical properties in saturated state, including those in the fiber direction. Furthermore, a permanent degradation was observed in some properties after drying. Thus, the importance of considering water content and aging effect on the characterization and engineering application of 3D printed CF/PA composite was evidenced.

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“…Dutra et al. [ 12 ] characterized the ILSS of AM continuous carbon fiber reinforced thermoplastic composites. The experimental setup of the short beam bending test was in accordance with the ASTM D2344M.…”

Section: Introductionmentioning

confidence: 99%

Shear Characterization of Additively Manufactured Short Carbon Fiber‐Reinforced Polymer

Striemann

Bulach

Hülsbusch

et al. 2021

Macromolecular Symposia

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The additive manufacturing (AM) techniques Fused Deposition Modeling (FDM™) or Fused Filament Fabrication (FFF) are all based on material extrusion and are one of the most widely used AM methods. Serial production with this technology requires a deep understanding for the process and the effects of the process parameters on the mechanical properties. In literature tensile, compression, or flexural properties are often considered. However, the basic structure of a FFF part is strongly anisotropic and therefore similar to a composite material. The characterization of a carbon fiber‐reinforced polymer (CFRP) involves additional material properties. One of the most informative quality values for CFRP is the interlaminar shear strength (ILSS) in the midplane direction. The ILSS can be handled in an equivalent way for AM parts in form of the interlayer shear strength. The literature shows various approaches, but no existing standard to determine the interlayer shear strength for FFF parts. The aim of the study is a suitable experimental setup for identifying the interlayer shear strength of AM parts. The experimental setup and the specimen geometry in accordance with DIN 65148 are adapted to ensure an interlayer failure mode between two layers. The newly developed test approach is validated with a test series showing a decrease in ILSS of up to 40% by increasing the layer height.

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Interlaminar shear strength of continuous carbon fiber reinforced thermoplastic composites manufactured by 3D printing

Cited by 11 publications

References 6 publications

Material extrusion additive manufacturing of continuous fibre reinforced polymer matrix composites: A review and outlook

Material extrusion additive manufacturing of continuous fibre reinforced polymer matrix composites: A review and outlook

Moisture effect on the mechanical properties of additively manufactured continuous carbon fiber‐reinforced Nylon‐based thermoplastic

Shear Characterization of Additively Manufactured Short Carbon Fiber‐Reinforced Polymer

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