Effects of the resin flow on the bubble moving behavior

In order to eliminate the bubbles during composites manufacturing, a bubble movement visual setup was built, and the effects of the resin flow state and flow velocity on the bubble rising velocity were investigated. On the basis of experimental analysis, a bubble movement model was proposed. The results demonstrate that the resin flow has distinct driving effects on the bubble movement. When the resin and the bubble have the same movement direction, with the increasing of the resin flow velocity, the bubble velocity will increase greatly. When the movement direction is opposite, the bubble movement velocity will show the decreasing trend with the increasing of the resin flow velocity. The model is in agreement with the experimental value. These results will provide the basis for establishing the bubble movement model in the hot-compaction process.