Theoretical estimation of systematic errors in local deformation measurements using digital image correlation
详细信息 查看全文
- 作者：Xiaohai Xu ; Yong Su ; Qingchuan Zhang ; zhangqc@ustc.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Digital image correlation ; Systematic errors ; Subset size ; Grid step ; Strain window size
- 刊名：Optics and Lasers in Engineering
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：88
- 期：Complete
- 页码：265-279
- 全文大小：8286 K
文摘
- •
Theoretical estimations for displacement and strain systematic errors have been deduced.
- •
Approximate displacement systematic errors are proportional to the second-order displacement gradients.
- •
Approximate strain systematic errors are functions of the third-order displacement gradients.
- •
A convenient way is proposed to approximately evaluate the displacement systematic errors.