Abstract
Hole is one of the most common damages in the material. It is necessary to take the interaction among holes into consideration in the research of damage process of materials. The digital real-time holographic measurement system developed by us is used to measure the out-of-plane displacement of PMMA plates containing holes in this paper. The elastic field for the region which contains multiple holes is different from that of the region with one hole. The variation of elastic field due to the existence of multiple holes demonstrates the interaction among holes. It can be seen from the hologram recorded by the digital real-time holography that the distribution of elastic field is related to the configuration, the orientation and the distance of holes. Both the shielding effect and the amplification effect can be easily observed with the help of the distribution of fringes in hologram. These experimental results testify the credibility of the conclusions proposed by theory and by numerical computation.
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