When creating ignition and growth models for new explosive formulations, it is crucial to have a complete understanding of transverse detonation growth within the material to accurately predict corner‐turning performance in various geometries. This understanding is particularly important when designing a direct replacement for an existing explosive, typically with requirements to maintain function in terms of both initiation and end effects/lethality. While there have been many corner‐turning tests developed and successfully utilized over the last 60 years, many of the experimental designs favor traditional explosives that tend to exhibit ideal growth behavior. Many of the traditional corner‐turning tests exhibit prohibitive complications when faced with geometric scale‐up to accommodate large critical diameters that often accompany insensitive behavior. In an effort to address this shortcoming, the authors propose a corner‐turning test that can easily scale to accommodate a wide range of critical diameters and introduces modern diagnostics to provide additional data known to be useful for model development. As a case study for IMX‐104, the work herein uses a combination of streaked fiber optics and photonic Doppler velocimetry probes (PDV) to investigate corner turning within a large double cylinder geometry. Additionally, diameter effects on detonation velocity measurements, front wave curvature, and extent of reaction at various PDV probe locations are investigated using the same diagnostics. These experimental results have since been used to improve an IMX‐104 ignition and growth model that has been used to support the development of numerous warhead designs – notably the 155 mm family of artillery munitions.

中文翻译：

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高灵敏炸药大双筒转弯性能的实验研究

在为新的炸药配方创建点火和增长模型时，至关重要的是，必须全面了解材料内部的横向爆轰增长，才能准确预测各种几何形状的转弯性能。当设计直接替换现有炸药时，尤其是在起爆和最终影响/致命性方面都要求保持功能时，这种理解尤为重要。在过去的60年中，尽管开发出许多转弯试验并成功利用了这些试验，但许多实验设计都偏向于倾向于表现出理想生长行为的传统炸药。当面对几何放大以适应通常伴随不敏感行为的大临界直径时，许多传统的转弯测试显示出令人难以置信的复杂性。为了解决这个缺点，作者提出了一种转弯测试，可以轻松扩展以适应各种临界直径，并引入了现代诊断方法，以提供已知的对模型开发有用的附加数据。作为IMX-104的案例研究，本文的工作是结合使用条纹光纤和光子多普勒测速仪（PDV）来研究大型双圆柱体几何形状中的转角。此外，使用相同的诊断程序研究了直径对爆速测量，前波曲率和在不同PDV探头位置的反应程度的影响。