About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
Extraordinary Inductive and Capacitive Discharge/Charge Behavior of Carbon Fiber, and the Enabled Nonstop Discharge of a Fiber Assembly |
| Author(s) |
Deborah D.L. Chung, Sathwika Chittluri |
| On-Site Speaker (Planned) |
Deborah D.L. Chung |
| Abstract Scope |
The 10-kHz inductance, capacitance and resistance of continuous 7.0-µm diameter carbon fibers are studied. For single fiber, both inductance and capacitance decrease to ~0 during short-circuited discharge and recover during subsequent open-circuited self-charge (extraordinary). The discharge and charge have non-exponential time dependence. The time for the inductance to decrease during discharge to 0.37 of the initial value is 12 min, though L/R = 2.3×10-8 s for inductance L and resistance R. The time for the capacitance to decrease during discharge to 0.37 of the initial value is 9 min, though RC = 6.6×10-7 s for capacitance C. In contrast, the 12,000-fiber tow does not undergo inductive discharge, indicating effective R = 0, and does not undergo capacitive discharge, indicating effective R = ∞. These extraordinary values are ideal. Offsetting the start of the discharge-charge cycling of various parts of a tow or fiber assembly allows nonstop discharge (electrical energy release). |