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Research on the Temperature Characteristics of Composite Energetic Bridge Membrane in Electrical Explosion Process

Author: WangFang
Tutor: ShenRuiZuo
School: Nanjing University of Technology and Engineering
Course: Military chemistry and pyrotechnics
Keywords: Temperature Tungsten light calibration method Laser energy calibration method Atomic emission spectroscopy double line technique Composite bridge membrane Electrical explosion
CLC: O643.2
Type: Master's thesis
Year: 2010
Downloads: 49
Quote: 2
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Abstract


Temperature is one of the important parameters to characterize burning and explosive characteristics. The temperature of composite energetic bridge membrane in electrical explosion process could usually reach even thousands of K, and it was always difficult to measure temperature as well as apply diagnostics technology in high temperature conditions. In this paper, two methods were employed to determine the range of bridge membrane temperature. With the application of tungsten light calibration method and laser energy calibration method, the temperature measurement system in varied temperature ranges was calibrated. Atomic emission spectroscopy double line technique was employed to measure the temperature of Al-CuO thin membrane and Al-Ni alloy membrane. Meanwhile, as a supplement and validation of Atomic spectroscopy double line technique, Mach-Zehnder interference temperature measurement method was adopted to determine the surface temperature of Al-CuO thin membrane. The main results are as follows:(1) Laser energy calibration method was first used in this paper. With the employment of tungsten light calibration method, we found the formula with the temperature range of 1280K-2666K. While the formula was obtained through laser energy calibration method with the temperature range of 7000K-10000K;(2) With the comparison of two calibration methods and other techniques found in documents, laser energy calibration method was proved to much more suitable for the as established atomic emission spectroscopy double line technique;(3) With the integration of two monochromators, atomic emission spectroscopy double line technique was applied. Several series of Al-CuO and Al-Ni composite membranes temperatures were measured to obtain temperature-time curve. In terms of two series of Al-CuO composite membranes with different voltages and dimensions, the membrane with voltage 40V and dimension 0.6×1.7 mm had the highest temperature. In terms of two series of Al-Ni composite membranes with different voltages and layers, the membrane with voltage 50V and 2 layers had the highest temperature. While the membranes had the close resistance and were fixed to 2 layers, the temperature of Al-Ni composite membrane was higher than that of Al-CuO composite membrane;(4) Mach-Zehnder interference temperature measurement method was used to measure the temperature of two-layer Al-CuO composite membrane which, in the same conditions, was determined again with atomic emission spectroscopy double line technique so as to validate the reliability of the atomic emission spectroscopy double line technique under the calibration of laser energy calibration method.

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CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Chemical kinetics,catalysis > Burning, exploding and bursting
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