Validation study on the theory of composites by using three-dimensional printing technology

Abstract

RoM, as a reinforcement theory of composite materials, has been widely used. With the advent of new materials and molding processes, this theory is constantly being refined and validated. In this paper, four high-tech fibers as continuous reinforcing materials and carbon nanotubes as non-continuous reinforcing materials were evaluated, and two ideal composite samples were designed using three-dimensional printing technology. The reliability of RoM was verified by tensile testing. Also, a fiber tensile fixture was designed. The fiber bundle strength was inversely proportional to the length and the number of roots of fiber. In verifying the RoM, three-dimensional printing was employed, showing the diversity and complexity of the testing samples.

Effect of fibre arrangements on tensile properties of 3D printed continuous fibre-reinforced thermoplastic composites

“…According to the trend of experimental data, the power function as Equation ( 2) was used to fit E, Rm max and e. The fitting parameters of Equation ( 2) are listed in Table S4 provided in the supporting material. Note that the values of the adjusted R-Square for the fitting function were close to 1, meaning the high fitting accuracy of Equation (2).…”

“…Continuous fibre-reinforced thermoplastic composites (CFRTPCs) consist of thermoplastic polymers named continuous phase (known as matrix) and continuous fibres named dispersed phase (known as reinforcement), requiring the ratio of fibre length and diameter greater than or equal to 10 5 . CFRTPCs are becoming more and more significant in industrial applications because of their inherent advantages such as excellent mechanical and chemical performance, recycling and potential light-weight structures [1][2][3]. The moulding technology of CFRTPCs has been developing for decades and there are various types of moulding processes including resin transfer moulding, winding moulding, vacuum assisted moulding, injection moulding, pultrusion moulding and so on [4].…”

Process evaluation, tensile properties, mathematical models, and fracture behavior of 3D printed continuous fiber reinforced thermoplastic composites

“…Compared with traditional metal materials and inorganic nonmetal materials, the advantages of CFRTPCs include high specific strength and modulus, good anisotropy and designability, good dimensional stability and chemical resistance, simple molding process, outstanding vibration damping and electrical properties, low thermal conductivity, and so on. 1,2 It is known that the CFRTPCs have major applications in military equipment, aerospace, energy and power, biomedicine, marine engineering, transportation and sports, high-precision processing equipment, etc. It has been one of the new strategic and basic composite materials with the growing development in recent years.…”