Abstract: The high density pulse electric current (HDPEC) was applied to the metal aluminum foil to study the effect of HDPEC on metal aluminum foil. The experimental results show that the aluminum foil will shrink when the HDPEC is applied. The ratio of the shrinkage is determined by the charge voltage, the capacitance and the discharging times. The larger the charge voltage or the charge capacitance or the discharging times, the more the shrinkage ratio is. It is analyzed that the electrical magnetic force induced by HDPEC is the main reason for the shrinkage of the aluminum foil. However, the effect of Joule heat produced by HDPEC on the shrinkage of aluminum foil can be ignored completely.
Effect of pulse electric current on metal aluminum foil
Abstract:
The high density pulse electric current (HDPEC) was applied to the metal aluminum foil to study the effect of HDPEC on metal aluminum foil. The experimental results show that the aluminum foil will shrink when the HDPEC is applied. The ratio of the shrinkage is determined by the charge voltage, the capacitance and the discharging times. The larger the charge voltage or the charge capacitance or the discharging times, the more the shrinkage ratio is. It is analyzed that the electrical magnetic force induced by HDPEC is the main reason for the shrinkage of the aluminum foil. However, the effect of Joule heat produced by HDPEC on the shrinkage of aluminum foil can be ignored completely.
Fig.3 Relationship between shrinkage ratio of aluminum foil and charge voltage and discharge times with charge capacitance of 200 μF
图4 当充电电压为1 200 V, 电容为200 μF时, 不同放电次数的铝箔收缩情况
Fig.4 Video photographs of aluminum shrinkage with different discharging times (Charge voltage=1 200 V, charge capacitance=200 μF) (a) —Without treatment; (b) —Once discharge; (c) —Three times discharge; (d) —Five times discharge
Fig.6 Video photographs of aluminum shrinkage with different discharging times (Charge voltage=1 200 V, charge capacitance=800 μF) (a) —Without treatment; (b) —Once discharge