2022 Volume 7 Pages 49-54
This paper proposes a method to measure the in-plane displacement and strain distributions inside a rubber sample using X-ray imaging and 2D digital image correlation. To obtain images with random pattern inside the opaque rubber specimen, metal particles are blended into the inner layer of the specimen. The images before and after deformation are then recorded through an X-ray imaging system. With the above procedure, a random pattern of metal particles can be observed and the 2D digital image correlation is successfully applied to the images under a sliding contact. The results show that the in-plane displacements and strains inside the rubber sample are obtained using the proposed method. The results also show that the content of silica greatly affects the deformation behavior of rubber under sliding contact. Since the proposed method can be used to evaluate the deformation behavior of rubber test pieces, further investigation of the rubber deformation behavior at various filler contents is expected.
