孔隙对纤维增强聚合物基复合材料层压板力学性能影响的研究进展

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从理性层面研讨了孔隙率、孔隙形态和孔隙大小等对复合材料结构力学性能的影响；从实验角度阐述了含孔隙复合材料的性能模拟、细观机制模型和有限元模型的研究进展；指出了纤维增强聚合物基复合材料孔隙问题的未来研究方向。

Study on Cutting Force for Milling Hardened Steel Arc Path with Micro-end Mill

A new self-reconfiguration modular exploration robots system(RMERS) was introduced herein.Three basic configurations of RMERS child-robots
were analyzed in detail: the serial connection with arm ahead; the serial connection with arm behind; and the loop connection with end to end. Taking two child-robots for examples, the statics of every combination for the child-robot systems on slope were analyzed. Based on these, the simulation experiments based on the real model parameters
were researched on the child-robot configurations,and the results show that the climbing capability of different configurations has tight correlation with their connection style. The serial connection with arm ahead is the strongest in climbing.The real experiments validate the simulation results. At the same time, according to the experimental results,it indicates that the stability of the serial connection with arm ahead is worse,and the loop connection with end to end is the best configuration for its stability and good climbing capacity.