THRESHOLD OF FATIGUE CRACK INITIATION OF 13SiMnNiCrMoV STRUCTURAL STEEL NOTCHED SPECIMEN
13SiMnNiCrMoV钢切口疲劳裂纹萌生门槛值

Stress intensity factor for a sharp crack is used to reflect the crack initiation froma three point bend notched specimen.Structural steel 13SiMnNiCrMoV is studied in this paper.With R=0.1,f=100Hz and the specimen size B×W×L=12.5×25×117mm,the nominalstres