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航天继电器多余物微粒碰撞噪声检测的冲击试验条件

, PP. 75-80

Keywords: 航天继电器,多余物,微粒噪声碰撞检测,冲击

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Abstract:

微粒碰撞噪声检测试验是航天继电器出厂前必做的筛选试验,冲击是微粒碰撞噪声检测试验中的重要环节。为找出影响冲击加速度峰值和脉冲持续时间的关键因素,研究冲击试验条件对多余物微粒的激活效果,增加检测的成功率。本文建立了冲击过程的数学模型,分析系统参数对冲击加速度的影响;基于电像力理论推导最小冲击加速度与多余物微粒物特征参数的关系;将“损伤等效原则”用于确定冲击试验条件,给出了等效冲击条件表,并进行了相关实验验证。实验结果表明选择不同冲击条件,可以实现对不同大小的多余物微粒进行有效的激活。

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