Fatigue Reliability Analysis of 6156-T6 Riveted Joints based on Detail Fatigue Rating

2017 4th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造

Chen, An^1 ; Yang, Jun^1 ; Zhang, Kan^1 ; Zhang, Haiying^1

Aircraft Strength Research Institute of China, Xi'an, China^1

关键词: Aluminum alloy structures;    Crack initiation sites;    Detail fatigue ratings;    Fatigue behavior;    Fatigue crack initiation;    Fatigue striations;    Riveted lap joints;    Stable crack growth;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/269/1/012045/pdf
DOI  :  10.1088/1757-899X/269/1/012045

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The fatigue behavior of two kinds of riveted joints 6156-T6 aluminum alloy structures was experimentally investigated. The detail fatigue rating (DFR) values of 6156-T6 is calculated based on statistical analysis of fatigue tests. The fatigue crack initiation and propagation behavior are examined using scanning electron microscopy. The results show that DFR value of 6156-T6 aluminum alloy with riveted lap joints is 97.81MPa, and the DFR value of rivet-filled countersink hole structure is 168.39MPa. The crack initiation sites occurred at the vicinity of the fastener hole in all specimens. The fatigue striations were uniformly spaced in the region of stable crack growth.