Response of Carbon Nanotube (CNT) Ply Subjected to a Pulsed Magnetic Field

TL;DR

This study investigates how a single CNT ply responds to pulsed magnetic fields, showing no permanent deformation but possible displacement and resistance changes depending on layout and current direction.

Contribution

It provides new insights into the mechanical and electrical responses of CNT plies under pulsed magnetic fields, including displacement and resistance variation behaviors.

Findings

No permanent deformation observed in CNT plies.

CNT ply displacement varies with magnetic pulse and driver material.

Resistance changes depend on lay-out and current flow direction.

Abstract

In this study, the possible deformation of a single Carbon Nanotube (CNT) ply subjected to a pulsed magnetic field was investigated. In all tests the capacitor bank was charged to 6kJ of energy. A Photon Doppler Velocimetry (PDV) system was used to measure velocity or displacement of the CNT ply during the experiments. The resistance of the CNT ply was measured using four-point probe technique before and after the experiments. Preliminary results show that the single CNT plies do not permanently deform in response to the pulsed magnetic fields. However, they can be displaced, either by themselves a small amount (0.6mm) or by a large amount using a driver material. Also, the resistance of the CNT plies may increase or decrease depends on the lay-out (i.e., yarn) and current flow directions.