Predictive Assessment of Material Failure

世界各地目前的冲突经常报告当前和新出现的爆炸性威胁的破坏性影响。通常由高硬钢(HHS)等多层材料组成的防护结构和平台被用来减少这些威胁的灾难性影响。尽管DSTL已经进行了全尺寸的爆炸试验，以评估一系列装甲技术提供的抵御爆炸载荷的保护水平，但在超配过程中脆性破坏的根本原因还不清楚。加强对HHS在极端动态载荷下的行为的了解，对于支持DSTL装甲中小企业提供的建议至关重要，特别是在与当前冲突相关的全球不确定性方面。了解高硬度、脆性材料灾难性破坏的基础科学可以使多个研究领域受益。虽然一个典型的例子是车辆防护板的故障，但这可以描述所有可能经历爆炸故障的金属材料，如压力管道和英国关键国家基础设施(能源)的其他关键部件。这将使开发远远超出最初的国防和安全领域，如天然气基础设施，特别是考虑到目前正在考虑过渡到氢气作为一种更清洁的能源。

The destructive effects of current and emerging exploding threats are routinely reported from current conflicts around the world. Protective structures and platforms, commonly consisting of multiple layers materials such as High Hard Steel (HHS), are used to reduce the catastrophic effect of these threats. Although full scale blast trials have been conducted by Dstl to assess the protection level provided by a range of armour technologies against blast loading, the fundamental cause of brittle failure during overmatch is not well understood. An increased understanding of the behaviour of HHS under extreme dynamic loading is essential to support advice provided by Dstl Armour SMEs, particularly with the global uncertainty associated with current conflicts. Understanding the fundamental science of the catastrophic failure of high hardness, brittle, materials can benefit multiple research fields. Whilst a typical example is the failure of a protective panel in a vehicle, this could describe all metallic materials that may experience a blast failure, such as pressurised pipes and other key parts of the UKs critical national infrastructure (energy). This will have exploitation far beyond the initial Defence and Security domain, such as gas infrastructure, particularly given the current consideration of transitioning to hydrogen gas as a cleaner energy source.