CRack Arrest and Self-Healing in COMPosite Structures (CRASHCOMPS)

复合结构中的裂纹抑制和自我修复 (CRASHCOMPS)

• 批准号: EP/G003599/1
• 负责人: Ian Bond
• 金额: $ 75.81万
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FG003599%2F1
• 关键词: CRack; Arrest; Self; Healing; COMPosite

Although composites are now widely utilised there has been a reticence from designers in using them in safety critical applications, principally because of their sensitivity to defects. Since relatively minor damage can significantly reduce performance, the 'no growth' approach (i.e. damage propagation from a defect constitutes failure) is now the mindset of the composites industry. This has led to excessively heavy components, shackling of innovative design, and a need for frequent inspection during service. However, the research community has made considerable steps in understanding damage modes and the development of robust failure models. A step change in composites technology could be achieved by adopting a philosophy in which some damage growth can be tolerated (i.e. be 'damage tolerant' or 'fail-safe); this would provide considerable weight and cost savings and offer designers greater freedom to formulate new designs. Furthermore, there are numerous applications in which a component is expected to tolerate significant damage growth yet still be fit for service; for example, collision damage to a transport vehicle. In such an application, severe damage is introduced whilst the structure is under significant load, and subsequently crack growth is highly likely; a no-growth criterion cannot be used, and damage propagation must be tolerated. An effective approach to achieve this is by employing CRack Arrest and Self-Healing COMPosite Structures (CRASHCOMPS). Uniquely, composites offer the freedom to 'tailor' internal architecture, hybridise and introduce novel features in order to achieve such a capability.

尽管复合材料现在得到了广泛的应用，但设计人员在安全关键应用中一直不愿使用它们，主要是因为它们对缺陷的敏感性。由于相对较小的损坏会显着降低性能，因此“无增长”方法（即缺陷的损坏传播构成故障）现在是复合材料行业的思维方式。这导致部件过重、创新设计受到束缚以及在使用过程中需要频繁检查。然而，研究界在理解损坏模式和开发稳健的失效模型方面已经取得了相当大的进步。通过采用可以容忍某些损伤增长（即“损伤容忍”或“故障安全”）的理念，可以实现复合材料技术的阶跃变化；这将大大节省重量和成本，并为设计人员提供更大的自由度来制定新设计。此外，在许多应用中，部件预计能够承受显着的损坏增长，但仍然适合使用；例如，运输车辆的碰撞损坏。在这样的应用中，当结构处于显着载荷下时，会产生严重损坏，并且随后很可能出现裂纹扩展；不能使用无增长标准，并且必须容忍损伤传播。实现这一目标的有效方法是采用 CRack Arrest 和自我修复复合结构 (CRASHCOMPS)。独特的是，复合材料提供了“定制”内部架构、混合和引入新颖功能的自由，以实现这种能力。

项目成果

Autonomous stimulus triggered self-healing in smart structural composites

• DOI: 10.1088/0964-1726/21/9/094027
• 发表时间: 2012-09
• 期刊: Smart Materials and Structures
• 影响因子: 4.1
• 作者: C. Norris;J. A. White;G. McCombe;P. Chatterjee;I. Bond;R. Trask

X-ray damage characterisation in self-healing fibre reinforced polymers

• DOI: 10.1016/j.compositesa.2011.12.020
• 发表时间: 2012-04-01
• 期刊: COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
• 影响因子: 8.7
• 作者: McCombe, G. P.;Rouse, J.;Bond, I. P.
• 通讯作者: Bond, I. P.

Self-Healing Fibre Reinforced Composites via a Bioinspired Vasculature

• DOI: 10.1002/adfm.201101100
• 发表时间: 2011-10-07
• 期刊: ADVANCED FUNCTIONAL MATERIALS
• 影响因子: 19
• 作者: Norris, Christopher J.;Meadway, Gregory J.;Trask, Richard S.
• 通讯作者: Trask, Richard S.

The role of embedded bioinspired vasculature on damage formation in self-healing carbon fibre reinforced composites

• DOI: 10.1016/j.compositesa.2011.02.003
• 发表时间: 2011-06-01
• 期刊: COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
• 影响因子: 8.7
• 作者: Norris, C. J.;Bond, I. P.;Trask, R. S.
• 通讯作者: Trask, R. S.

Interactions between propagating cracks and bioinspired self-healing vascules embedded in glass fibre reinforced composites

• DOI: 10.1016/j.compscitech.2011.01.027
• 发表时间: 2011-04-12
• 期刊: COMPOSITES SCIENCE AND TECHNOLOGY
• 影响因子: 9.1
• 作者: Norris, C. J.;Bond, I. P.;Trask, R. S.
• 通讯作者: Trask, R. S.