Very high cycle fatigue (VHCF) behavior of structured Al 2024 thin sheets

摘要：

　　In the present study the VHCF behavior of Al 2024,a standard material in aerospace application,is investigated.The focus of the presented work is the influence of riblet-like surface structures on fatigue life and damage mechanisms.The cold-rolling process used for riblet forming results in slight work hardening and near-surface residual stresses.Furthermore the influence of pure Al-claddings on the VHCF behavior of Al 2024 sheets is examined.Fatigue tests are performed using an ultrasonic fatigue testing system at a frequency of around 20 kHz.The present work contributes to a deeper understanding of riblet structures and surface claddings on the VHCF behavior of Al 2024.

关键词： VHCF Al 2024 surface structure

作者: Sebastian Stille Tilmann Beck Lorenz Singheiser

作者单位: Institute of Energy and Climate Research(IEK-2),FZ Juelich,D-52425 Juelich,Germany

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-8

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）