@Article{icces.2021.08538,
AUTHOR = {Kengo Fujii, Satoru Yoneyama, Ayaka Suzuki, Hiroshi Yamada},
TITLE = {A Method for Measuring Displacement and Strain of Rubber Sheets with Large Deformation Using Digital Image Correlation},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {23},
YEAR = {2021},
NUMBER = {1},
PAGES = {21--21},
URL = {http://www.techscience.com/icces/v23n1/42045},
ISSN = {1933-2815},
ABSTRACT = {This study establishes a method to measure the displacement and 
strain of rubber with large and fast deformations using digital image correlation. 
In order to elucidate the mechanism of growth of a crack and to investigate the
complex behavior of a crack tip, which is important for that purpose, 
displacement and strain near the crack where large strains are locally generated 
by stress concentration are measured. A displacement restraint rubber sheet of a 
strip fixed at upper and lower ends with an initial crack is used as a test piece. A
constant rate displacement load is applied to it, its state is photographed using a 
digital camera. Displacement is obtained using the digital image correlation from 
the images obtained from a series of tests. By processing multiple images in 
succession, the displacement corresponding to large and high-speed deformation 
are acquired. Furthermore, the measurement range of the image is divided into 
upper and lower parts at the cracks, and the measurement can be performed 
separately, making it possible to handle errors caused by crack discontinuities.
The logarithmic strain is obtained from the obtained displacement results. By 
applying the proposed method, it is possible to measure displacement and strain 
even for rubber test pieces with large deformation.},
DOI = {10.32604/icces.2021.08538}
}