The researsh of an Improved Displacement Smoothing Technique in Digital speckle correlation method

摘要：

Digital speckle correlation method (DSCM) has been widely applied in deformation measurements due to the advantages of non-contact,full-field, large strain measurement and in-site measuring capability.For DSCM,the key problem is how to obtain a more precise displacement field from contaminated data by noise. In this paper, the principle of DSCM is introduced , a smoothing technique using FEM and 2D-GCV algorithm for improving the measuring precision of DSCM is presented, and the comparison of strain field before and after smoothing is offered.

关键词： digital speckle correlation method smoothing technique strain field

作者: J.D.Chen G.C. Jin L.B.Meng L.Guo

作者单位: Systems Engineering Research Institute of Engineering Equipment Beijing, Beijing, 100093, China, Phone[phone];Dept. of Engineering Mechanics, Tsinghua University, Beijing, 100084, China

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）