Full Field Measurement Techniques for High Strain Rate Testing of Composites

复合材料高应变率测试的全场测量技术

• 批准号: EP/G001715/1
• 负责人: Stephen Hallett
• 金额: $ 4.66万
• 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: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FG001715%2F1
• 关键词: Full; Field; Measurement; Techniques; Strain

It is important for design of engineering structures to be able to measure deformation of their constituent materials during characterisation tests. Traditionally this has been done using strain gauges glued onto specimens at specific locations. With recent rapid developments in digital imaging techniques and computing power, numerical processing of optically based full field measurement techniques is gaining popularity. This proposal seeks to fund a visiting fellowship for Dr Raphael Moulart from ParisTech Arts et Mtiers (formerly ENSAM) in Chlons en Champagne, France to work at the University of Bristol to investigate the feasibility of apply such full field techniques to high strain testing of composite materials. Novel image processing will be used to identify and track damage as it develops during the material tests and also extract material properties. This is important in the case of composite materials as they can exhibit significant rate dependence.

对于工程结构的设计来说，能够在表征测试期间测量其组成材料的变形非常重要。传统上，这是通过将应变计粘贴在样本的特定位置来完成的。随着数字成像技术和计算能力的快速发展，基于光学的全场测量技术的数值处理越来越受欢迎。该提案旨在为法国 Chlons en Champagne 的 ParisTech Arts et Mtiers（前 ENSAM）的 Raphael Moulart 博士提供访问奖学金，让其在布里斯托大学工作，研究将这种全现场技术应用于复合材料高应变测试的可行性。新颖的图像处理将用于识别和跟踪材料测试过程中出现的损坏，并提取材料特性。这对于复合材料来说很重要，因为它们可以表现出显着的速率依赖性。

项目成果

Full-Field Strain Measurement and Identification of Composites Moduli at High Strain Rate with the Virtual Fields Method

• DOI: 10.1007/s11340-010-9433-4
• 发表时间: 2011-04-01
• 期刊: EXPERIMENTAL MECHANICS
• 影响因子: 2.4
• 作者: Moulart, R.;Pierron, F.;Wisnom, M. R.
• 通讯作者: Wisnom, M. R.