A New Approach for 3D Mapping of Residual Stress

残余应力 3D 绘图的新方法

• 批准号: 2621763
• 金额: --
• 依托单位: The Open University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2621763
• 关键词: New; Approach; 3D; Mapping; Residual

Residual stresses play a key role in driving degradation mechanisms in safety criticalcomponents in nuclear power plants. Reliable knowledge of magnitude and distribution ofresidual stress in nuclear power plant components is of the utmost importance to accuratelyassess their performance in service.Amongst available residual stress measurement techniques the contour method is a powerfultechnique capable of providing 2D map of residual stress across a plane of interest usingequipment available in most workshops. The technique has been increasingly used tocharacterise residual stresses introduced by a wide range of manufacturing processes, forstructural integrity assessments and validating numerical simulations.The aim of this project is to implement multiple residual stress measurement techniquesincluding the contour method together with advanced numerical modelling to provide 3Dmaps of residual stress distribution for engineering structures.The proposed approach will be demonstrated on well designed benchmark test specimensfor which analytical solutions are available. Once verified the approach will be extended tomore complex structures. This project therefore involves simulations, analytical modellingand experimental measurements. There will be opportunities to use international diffractionfacilities.

残余应力在驱动核电站安全关键部件的退化机制中起着关键作用。可靠地了解核电厂部件中残余应力的大小和分布对于准确评估其使用性能至关重要，在现有的残余应力测量技术中，等高线法是一种强大的技术，能够使用大多数车间可用的设备提供整个感兴趣平面的残余应力二维图。该技术已越来越多地用于消除由各种制造工艺引入的残余应力，该项目的目的是实现多种残余应力测量技术，包括轮廓法和先进的数值模拟，以提供工程结构的残余应力分布的三维图。所提出的方法将在井上进行演示。设计的基准测试仪器，可提供分析解决方案。该方法一旦得到验证，将被推广到更复杂的结构.因此，该项目涉及模拟，分析建模和实验测量。将有机会使用国际衍射设施。