Application of Digital Image Correlation Method to In-Situ Dynamic Strain Measurement

doi:10.1007/s12204-017-1864-y

上海交通大学学报（英文版） ›› 2017, Vol. 22 ›› Issue (6): 719-725.doi: 10.1007/s12204-017-1864-y

Application of Digital Image Correlation Method to In-Situ Dynamic Strain Measurement

LIN Liexiong (林烈雄), LU Hao* (陆皓), XU Jijin (徐济进),CHEN Junmei (陈俊梅), YU Chun (余春)

(School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)

出版日期:2017-12-01 发布日期:2017-12-03
通讯作者: LU Hao (陆皓) E-mail:shweld@sjtu.edu.cn

Application of Digital Image Correlation Method to In-Situ Dynamic Strain Measurement

LIN Liexiong (林烈雄), LU Hao* (陆皓), XU Jijin (徐济进),CHEN Junmei (陈俊梅), YU Chun (余春)

(School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)

Online:2017-12-01 Published:2017-12-03
Contact: LU Hao (陆皓) E-mail:shweld@sjtu.edu.cn

摘要/Abstract

摘要： Application of digital image correlation (DIC) method to determination of in-situ dynamic strain is presented in this study. Firstly, an integrative software is programmed based on the DIC algorithms and pointwise least-squares fitting technique. Then, simulated speckle images are generated to study the computational accuracy of this software. The experimental setup and procedures for measuring in-situ dynamic strain through both DIC and strain gauge are proposed. The DIC results are close to those measured by strain gauge. This fact reveals that DIC is a practical and effective tool for in-situ dynamic strain measurement. Finally, the full-field in-situ dynamic strain of another specimen is measured by DIC, and the overall distribution of the strain in the measurement area is clearly shown.

关键词: digital image correlation (DIC), in-situ dynamic strain, metallic material, deformation measurement

Abstract: Application of digital image correlation (DIC) method to determination of in-situ dynamic strain is presented in this study. Firstly, an integrative software is programmed based on the DIC algorithms and pointwise least-squares fitting technique. Then, simulated speckle images are generated to study the computational accuracy of this software. The experimental setup and procedures for measuring in-situ dynamic strain through both DIC and strain gauge are proposed. The DIC results are close to those measured by strain gauge. This fact reveals that DIC is a practical and effective tool for in-situ dynamic strain measurement. Finally, the full-field in-situ dynamic strain of another specimen is measured by DIC, and the overall distribution of the strain in the measurement area is clearly shown.

Key words: digital image correlation (DIC), in-situ dynamic strain, metallic material, deformation measurement

中图分类号:

TG 404

LIN Liexiong (林烈雄), LU Hao* (陆皓), XU Jijin (徐济进),CHEN Junmei (陈俊梅), YU Chun (余春). Application of Digital Image Correlation Method to In-Situ Dynamic Strain Measurement[J]. 上海交通大学学报（英文版）, 2017, 22(6): 719-725.

LIN Liexiong (林烈雄), LU Hao* (陆皓), XU Jijin (徐济进),CHEN Junmei (陈俊梅), YU Chun (余春). Application of Digital Image Correlation Method to In-Situ Dynamic Strain Measurement[J]. Journal of Shanghai Jiao Tong University (Science), 2017, 22(6): 719-725.

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Application of Digital Image Correlation Method to In-Situ Dynamic Strain Measurement

Application of Digital Image Correlation Method to In-Situ Dynamic Strain Measurement

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