高原环境下基于无线传感器网络的地震预警系统设计——以拉萨羊易村为例

Study on the Fatigue Fracture of Hi-Lock pins in Ti6Al4V Titanium Alloy

在对西藏拉萨羊易村的自然环境和通信状况进行调研的基础上,提出了一种高原环境下的基于无线传感器网络的地震预警系统。结合该村丰富的太阳能资源,利用太阳能给改进的传感器装置充电,依据羊易村各组地理位置的分布,给出了最优化的传感器网络结构,并对此结构的关键技术、解决方案和安全性进行了分析。

On the basis of the fatigue test of Hi-Lock Pins inTi6Al4V itanium alloy,the fatigue fracture of Hi-Lock Pins in titanium alloy was analyzed.The fatigue fracture fractography of cracks origins zone and cracks process zone and quickly failure zone in the course of crack propagation were observed by virtue of the Scanning-electron-microscope（SEM）,and the shaping reasons of the fatigue fracture fractography was analyzed in order to afford the scientific accordance for safety design and reliability analysis of a structural member in the fatigue.