By NdFeB magnetic powders treated with the silicon cou-pling agents,mechanical properties of the magnetic composite are remark-ably improved,and its magnetic pr
This paper deals with the repair of dam-aged plain concrete and polymer cement concreteby impregnation with methyl methacrylate(MMA) or sulfur.The stress-strain
The fatigue behavior of alumina and silicon car-bide has been investigated in this paper.Once visiable macrocrack on ceramic materials appears,the specimen rupt