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.
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 Jiaotong University(Science), 2017
, 22(6)
: 719
-725
.
DOI: 10.1007/s12204-017-1864-y
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