• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of the American Physical Society >APS -20th Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter - Event - Laser-induced air shock from energetic materials (LASEM) method for estimating detonation performance: challenges, successes and limitations.
【24h】

APS -20th Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter - Event - Laser-induced air shock from energetic materials (LASEM) method for estimating detonation performance: challenges, successes and limitations.

机译：APS凝聚态物质冲击压缩专题组第20届两年一次会议-事件-高能材料的激光诱导空气冲击（LASEM）方法，用于估计爆炸性能：挑战，成功与局限。

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Recently, a laboratory-scale method for measuring the rapid energy release from milligram quantities of energetic material has been developed based on the high-temperature chemistry induced by a focused, nanosecond laser pulse. The ensuing exothermic chemical reactions result in an increase in the laser-induced shock wave velocity compared to inert materials; a high-speed camera is used to record the expansion of the shock wave into the air above the sample surface. A comparison of the characteristic shock wave velocities for a wide range of energetic materials revealed a strong linear correlation between the laser-induced shock velocity and the reported detonation velocities from large-scale detonation testing. This has enabled the use of the laser-induced air shock from energetic materials (LASEM) method as a means of estimating the detonation performance of novel energetic materials prior to scale-up and full detonation testing. Here, we report new applications of the LASEM method and discuss the challenges and limitations of the technique. While the extension of LASEM to novel high-nitrogen energetic materials and aged conventional energetic material samples has been quite successful, non-organic and other highly reactive samples present some unique challenges.
机译：近来，基于聚焦的纳秒激光脉冲引起的高温化学，已经开发了一种实验室规模的方法，用于测量从毫克量的高能材料中释放出的快速能量。与惰性材料相比，随后发生的放热化学反应会导致激光引起的激波速度增加。高速相机用于记录冲击波向样品表面上方空气中的扩展。各种高能材料的特征冲击波速度的比较表明，激光诱导的冲击速度与大规模爆炸试验报告的爆炸速度之间具有很强的线性相关性。这使得能够使用激光诱导的高能材料产生的空气冲击（LASEM）方法，作为在按比例放大和全面爆震测试之前估算新型高能材料的爆震性能的手段。在这里，我们报告了LASEM方法的新应用，并讨论了该技术的挑战和局限性。尽管将LASEM扩展到新型高氮高能材料和老化的常规高能材料样品已经非常成功，但非有机和其他高反应性样品却提出了一些独特的挑战。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号