Abstract
Multifunctional carbon fiber composites provide promising results such as high strength-to-weight ratio, thermal and electrical conductivity, high-intensity radiated field, etc. for aerospace applications. Tailoring the electrical and structural properties of 3D-printed composites is the critical step for multifunctional performance. This paper presents a novel method for evaluating the effects of the coating material system on the continuous carbon fiber strand on the multifunctional properties of 3D-printed composites and the material’s microstructure. A new method was proposed for the quasi-static characterization of the Compressive-Electrical properties on the additively manufactured continuous carbon fiber solid laminate composites. In this paper, compressive and electrical conductivity tests were simultaneously conducted on the 3D-printed test coupons at ambient temperature. This new method modified the existing method of addressing monofunctional carbon fiber composites by combining the monofunctionality of two or more material systems to achieve the multifunctional performance on the same component, thereby reducing the significant weight. The quasi-static multifunctional properties reported a maximum compressive load of 4370 N, ultimate compressive strength of 136 MPa, and 61.2 G Ohms of electrical resistance. The presented method will significantly reduce weight and potentially replace the bulky electrical wires in spacecraft, unmanned aircraft systems (UAS), and aircraft.
Highlights
IntroductionWhile this paper compiled useful data about the effects of process parameters on static and fatigue behavior, and tensile strength and fatigue life of the 3D-printed polylactic acid (PLA)–graphene specimens, it did not address the quasi-static multifunctional characterization of the 3D-printed carbon fiber composites for Compressive-Electrical properties [1]
Quasi-static monofunctional structural testing was conducted to characterize the tensile and fatigue properties of the 3D-printed polylactic acid (PLA)–graphene and the effects of the process parameters on the strength and fatigue behavior of the test specimens [1].While this paper compiled useful data about the effects of process parameters on static and fatigue behavior, and tensile strength and fatigue life of the 3D-printed PLA–graphene specimens, it did not address the quasi-static multifunctional characterization of the 3D-printed carbon fiber composites for Compressive-Electrical properties [1]
Simultaneous quasi-static compression and electrical conductivity tests were conducted on 3D-printed continuous carbon fiber test coupons for their suitability for aerospace applications
Summary
While this paper compiled useful data about the effects of process parameters on static and fatigue behavior, and tensile strength and fatigue life of the 3D-printed PLA–graphene specimens, it did not address the quasi-static multifunctional characterization of the 3D-printed carbon fiber composites for Compressive-Electrical properties [1]. It evaluates the effect of process parameters based on the nature of this process, which is classified as a thermally driven process [1]. An alternative material to polymer sizing, called carbon nanotubes (CNTs) was introduced on the carbon fibers to improve electrical and thermal functionalities [3]
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