Test set-up for reproducible shock wave generation

IF 4.2 3区工程技术 Q2 ENGINEERING, CHEMICAL

Journal of Loss Prevention in The Process Industries Pub Date : 2025-07-12 DOI:10.1016/j.jlp.2025.105736

M. Gerbeit , H. Seeber , D. Grasse , M. Donner , S. Grobert , D. Krentel

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引用次数: 0

Abstract

A test setup was developed at the BAM test site to generate and record reproducible, adjustable shock waves resulting from gas detonations. The setup is used to study the impact of blasts on humans and structures with short setup times. To further develop this innovative test bench and improve reproducibility, the ignition source and gas composition is analysed in more detail.

The experimental setup consists of a cylindrical pressure vessel (autoclave) that is operated with acetylene and oxygen at ambient pressure. The elevated pressure resulting from the combustion process is released through an orifice by the instantaneous rupture of a diaphragm. The shock propagates symmetrically into the free field, where it interacts with the models and sensors to be analysed. With this design, shock waves with a typical ideal Friedlander waveform characteristic, except for a reflection and a muzzle blast-like behavior that deviates from the ideal characteristics, can be generated. This setup enables an average peak overpressure of 88 kPa. By using exploding wires as an ignition source in comparison to a fusehead, the reproducibility was significantly increased during the test to

σ = 2.8

kPa from

σ = 9.5

kPa previously.

The presented data confirms the quality and reliability of this setup in generating realistic, reproducible shocks.

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可重复激波产生的测试装置

在BAM试验场开发了一个测试装置，以产生和记录可重复的、可调节的气体爆炸产生的冲击波。该装置用于研究爆炸对人体和结构的影响，安装时间短。为了进一步开发这一创新的试验台并提高再现性，对着火源和气体成分进行了更详细的分析。实验装置包括一个圆柱形压力容器（高压釜），在环境压力下用乙炔和氧气操作。燃烧过程产生的高压通过一个孔通过隔膜的瞬时破裂释放出来。激波对称地传播到自由场，在那里它与待分析的模型和传感器相互作用。通过这种设计，可以产生具有典型理想弗里德兰德波形特征的激波，除了反射和偏离理想特性的炮口爆炸样行为。此设置可使平均峰值超压达到88 kPa。采用爆炸丝作为点火源，与原引信相比，试验重现性从σ=9.5 kPa显著提高到σ=2.8 kPa。所提供的数据证实了这种设置在产生现实的、可重复的冲击方面的质量和可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Loss Prevention in The Process Industries 工程技术-工程：化工

CiteScore

7.20

自引率

14.30%

发文量

226

审稿时长

52 days

期刊介绍： The broad scope of the journal is process safety. Process safety is defined as the prevention and mitigation of process-related injuries and damage arising from process incidents involving fire, explosion and toxic release. Such undesired events occur in the process industries during the use, storage, manufacture, handling, and transportation of highly hazardous chemicals.