Thermal and Mechanical Response of a Carbon Fiber Reinforced Composite to a Transverse Impact and In-Plane Pulsed Electromagnetic Loads

Abstract

Thermal and mechanical response of a carbon fiber polymer matrix composite plate subjected to a transverse impact and in-plane pulsed electromagnetic loads is studied. Heat transfer analysis in the electrified composite plate for the electric currents of various waveforms (direct current (DC), alternating current (AC), and pulsed) is conducted, and the effects of the waveform parameters (characteristic time, peak, etc.) on the currentinduced heating in the composite are investigated. The results show that pulsed electric currents cause significant temperature rises only in the regions immediateiy adjacent to the electric contact (composite-electrode interface). As for the mechanical response of the composite piate, it is found that the characteristics of the electromagnetic field (waveform, duration of application, and intensity) can significantly reduce deflection and stresses in the plate, and concurrent application of a pulsed electromagnetic load can effectively mitigate the effects of the impact load in the electrically conductive composites.

Effect of radiofrequency coil and primary magnetic field on radiolucent composite plates

“…One area that utilizes the coupling phenomenon is the piezoelectric/piezomagnetic materials known as magneto-electric-elastic composites. Zhupanska et al [25][26] and Barakati et al [27][28][29][30][31] primarily focused on the coupling interactions of electro-magneto-thermo-mechanical fields to understand the effect on the mechanical response of carbon fiber-reinforced composites.…”

Thermally activated energy dissipation in semi-crystalline polymer nanocomposites

“…This concept can in principle enable the development of advanced concepts such as active rotor vibration reduction leading to reduced operating 2/21 and maintenance cost [2][3][4]. This concept can also be used to enhance impact resistance, relieve stress concentration, improve crashworthiness and adjust dynamic performance of structures [5][6][7].…”

“…For example, Smith et al developed a tuned-mass damper, in which damping was adjustable in a continuous range by controlling the temperature of the viscoelastic polymer through a resistive ribbon heater [13]. Polymer relaxation, accentuated by increasing the material temperature, has also been used to improve impact resistance and relieve stresses in carbon fiber reinforced composites, in which the fibers were used as resistive heaters [5,6]. While the aforementioned studies have targeted energy dissipation in microfiber composites via resistive heating, a similar concept can also be applied to nanocomposites with potentially higher efficiency in terms of temperature rise time and uniformity within the material.…”