ACPD法测量管节点中疲劳裂纹的增长过程  

MEASUREMENT OF THE DEVELOPMENT OF FATIGUE CRACK IN TUBULAR JOINTS USING ACPD TECHNIQUE

作　　者：吕永高[1] 邵永波[1] 

机构地区：[1]烟台大学土木工程学院,烟台264005

出　　处：《工业建筑》2006年第z1期442-444,共3页Industrial Construction

摘　　要：用交流电势能落差法(ACPD)测量了一个大型K节点在疲劳破坏过程中表面裂纹增长和破坏过程。对于评价管节点疲劳寿命经常使用的一个破坏力学参数———应力强度因子,通过试验数据和Paris公式得到了裂纹在扩展过程中其数值的变化情况。The development of the surface crack in the fatigue failure of a large-scale tubular K-joint specimen has been measured using alternating current potential drop(ACPD) technique.Through experimental data and Paris equation,the values of the stress intensity factor,which is a fracture parameter used to evaluate the fatigue life of tubular joints,have been obtained throughout the fatigue test.

关 键 词：交流电势能落差法(ACPD) K节点 疲劳破坏 表面裂纹 应力强度因子 

分 类 号：TU392.3[建筑科学—结构工程]