首页> 外文会议>ASME international design engineering technical conferences and computers and information in engineering conference 2010 >SIMULATION AND EXPERIMENTAL STUDIES OFELECTROTHERMAL BEHAVIORS OF MICROWIRE INITIATORS FORFUSING APPLICATIONS
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SIMULATION AND EXPERIMENTAL STUDIES OFELECTROTHERMAL BEHAVIORS OF MICROWIRE INITIATORS FORFUSING APPLICATIONS

机译:应用的微波引发剂的 r n电热行为的模拟和实验研究

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Microwire initiators enhance the output pressure and reduce the required input voltage for the explosives initiation in fusing applications due to large surface areas and high electrical and thermal conductivities. We investigated electrothermal behavior of Cu and Au microwires with diameters in the range of 25~ 100 pm. Microwires with smaller diameter ignited quickly and required the lower input voltage to be ignited. A low impedance circuit was used in order to apply relatively low voltages but high current density to the initiator wire. We investigated the ignition process theoretically by combining an electric circuit model and a specific current action model related to phase changes. The theoretical calculations are in good agreement with the experimental observations in terms of the burst time and voltage rise profile.
机译:由于大表面积以及高电导率和热导率,微丝引爆器可提高输出压力,并降低在熔断应用中引爆炸药所需的输入电压。我们研究了直径为25〜100 pm的Cu和Au微丝的电热行为。直径较小的微线会迅速点燃,并且需要点燃较低的输入电压。为了向引发器导线施加相对较低的电压但具有较高的电流密度,使用了低阻抗电路。我们通过组合电路模型和与相变有关的特定电流作用模型,从理论上研究了点火过程。在突发时间和电压上升曲线方面,理论计算与实验观察结果非常吻合。

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