导弹推进剂贮箱结构强度及剩余寿命实验研究  

Experimental Study of Structural Strength and Residual Life for Missile Propellent Tanks

作　　者：刘国庆[1] 常新龙[2] 张晓军[2] 

机构地区：[1]西北工业大学航天学院,西安710072 [2]第二炮兵工程学院,西安710025

出　　处：《宇航材料工艺》2007年第2期70-72,共3页Aerospace Materials & Technology

摘　　要：用三点弯曲多试样方法对导弹推进剂贮箱主要材料LD10铝合金及其焊件的断裂韧性和疲劳性能进行了实验研究,得到了材料母材、热影响区和焊缝的断裂韧性J_(IC)和疲劳裂纹扩展速率da/dN的规律。结合无损检测信息可以对导弹推进剂贮箱进行安全性评定和剩余寿命评估。Experimental study on fracture toughness and fatigue performance of aluminum alloy LD10 ann its welds is performed by using three point bend muhi-specimens. The fracture toughness Jicand fatigue crack propagation law da/dN for the matrix material, the heat affected zone and the welds are obtained. Safety evaluating and residual life estimating of missile propellent tanks can be carried out with these data coupling with non-destructive testing information.

关 键 词：三点弯曲 J积分 剩余寿命 断裂韧度 裂纹扩展速率 

分 类 号：TG405[金属学及工艺—焊接]