应用光学, 2018, 39 (6): 873, 网络出版: 2019-01-10  

基于数字散斑相关法的双金属复层板应变光学检测问题研究

Strain optical detection technology applied for bi-metal clad plate using digital speckle correlation method
作者单位
1 郑州轻工业大学 机电工程学院, 河南 郑州 450002
2 现代制造技术教育部重点实验室(贵州大学), 贵州 贵阳550025
摘要
双金属复层板具有优良的综合性能, 广泛应用于航空、航天、汽车等领域。在制造过程中其成形性能发生了较大变化, 传统单一金属的研究方法大多不能适应新材料发展的需要, 严重阻碍了双金属复层材料产业化的进程。提出采用数字散斑相关方法应用于双金属复层材料结构及现场工程变形测量; 分析了国内外研究现状及存在的科学问题, 揭示了严格数字散斑相关方法理论应用在复层材料的应变光学检测和成形性能的机理和研究内容, 该方案预计获得的4个应变数值相互对比验证, 能互相提高应变精度达5%, 并达到再现材料应变历史及动态跟踪、提高全场应变精度检测、优化材料配置比例及完善成形性能的目的。
Abstract
Bimetallic clad plates have excellent comprehensive performances and are widely used in aviation, aerospace, automotive and other fields. During the process of manufacturing , the great changes of formability have taken place.Most of the traditional single metal research methods can not meet the needs of the development of new materials, which seriously hinders the industrialization of bi-metal cladding materials.Aiming at this problem,a digital speckle correlation method was proposed to apply in the bi-metal cladding material structure and field engineering deformation measurement. The domestic and foreign research situations at present and existing science problems were analyzed,the strict theory of digital speckle correlation method used in strain optics testing and the mechanism of forming performance for cladding materials were revealed, and the related research content were studied. The proposed four strain values were verified by mutual comparison, which can improve the strain accuracy by 5%, and achieve the purpose of reproducing material strain history and dynamic tracking, improving the full field strain accuracy detection, optimizing the material configuration ratio and perfecting the forming performance.

张德海, 李艳芹, 刘建秀, 谢贵重, 田淑侠, 郭长江. 基于数字散斑相关法的双金属复层板应变光学检测问题研究[J]. 应用光学, 2018, 39(6): 873. Zhang Dehai, Li Yanqin, Liu Jianxiu, Xie Guizhong, Tian Shuxia, Guo Changjiang. Strain optical detection technology applied for bi-metal clad plate using digital speckle correlation method[J]. Journal of Applied Optics, 2018, 39(6): 873.

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