Fracture of Graphite Fuel Bricks

石墨燃料砖的断裂

• 批准号: EP/L504725/1
• 负责人: Paul Mummery
• 金额: $ 52.68万
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2013
• 资助国家: 英国
• 起止时间: 2013 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FL504725%2F1
• 关键词: Fracture; Graphite; Fuel; Bricks

The graphite core in nuclear Advanced Gas cooled Reactors (AGRs) provides channel for fuel cooling and shutdown/control rod insertion. Damage tolerance assessments need to determine that adequate margins remain for theintegrity of the fuel and the safety systems proper behaviour. For UK existing plants, graphite bricks' cracking is a keyquestion regarding lifetime management decisions. For the next generation plants, it has an influence on expected lifetimesand on investment plans.The objective of this proposal is to gain a good understanding and evaluation of fracture in graphite components bycomplementary numerical and experimental approaches. An advanced modelling tool allowing to simulate automaticallycrack propagation in graphite bricks will be developed and transferred to industry end-users. An innovative experimentalmethod will be elaborated to validate these models. Uncertainties on the whole core mechanical behaviour will beassessed.

核高级气体冷却反应器中的石墨芯（AGRS）为燃料冷却和关闭/控制杆插入提供​​了通道。损害耐受性评估需要确定燃料和安全系统适当行为的整合性仍然有足够的利润。对于英国现有工厂，石墨砖的破裂是有关终身管理决策的关键问题。对于下一代工厂，它对投资计划的预期寿命有影响。该提案的目的是对石墨组成部分中的裂缝进行良好的理解和评估，该裂缝临时数值和实验方法。将开发并将其转移到行业最终用户中的高级建模工具，允许在石墨砖中自动划分繁殖。将详细阐述创新的实验方法来验证这些模型。整个核心机械行为的不确定性将进行精心评估。

项目成果

Dynamic fracture analysis by explicit solid dynamics and implicit crack propagation

• DOI: 10.1016/j.ijsolstr.2017.01.035
• 发表时间: 2017-04
• 期刊: International Journal of Solids and Structures
• 影响因子: 3.6
• 作者: Timothy Crump;G. Ferté;A. Jivkov;P. Mummery;V. Tran

Mimicking irradiation-induced cracking of nuclear graphite using bromine intercalation

使用溴插层模拟核石墨的辐照诱导开裂

• DOI: 10.1016/j.scriptamat.2021.113889
• 发表时间: 2021
• 期刊: Scripta Materialia
• 影响因子: 6
• 作者: Bodel W

Practical Application of the Stochastic Finite Element Method

• DOI: 10.1007/s11831-014-9139-3
• 发表时间: 2016-03-01
• 期刊: ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING
• 影响因子: 9.7
• 作者: Arregui-Mena, Jose David;Margetts, Lee;Mummery, Paul M.
• 通讯作者: Mummery, Paul M.

Dynamic fracture effects on remote stress amplification in AGR graphite bricks

• DOI: 10.1016/j.nucengdes.2017.01.014
• 发表时间: 2017-11-01
• 期刊: NUCLEAR ENGINEERING AND DESIGN
• 影响因子: 1.7
• 作者: Crump, Timothy;Ferte, Guilhem;Tran, Van-Xuan
• 通讯作者: Tran, Van-Xuan

Characterisation of the spatial variability of material properties of Gilsocarbon and NBG-18 using random fields

使用随机场表征 Gilsocarbon 和 NBG-18 材料特性的空间变异性

• DOI: 10.1016/j.jnucmat.2018.09.008
• 发表时间: 2018
• 期刊: Journal of Nuclear Materials
• 影响因子: 3.1
• 作者: Arregui-Mena J