Issue 36

M. Ouarabi et alii, Frattura ed Integrità Strutturale, 36 (2016) 112-118; DOI: 10.3221/IGF-ESIS.36.11 117 Figure 5 : SN curve on smooth flat specimens in CP1000 (1.2 mm thickness) under tension-compression R = -1at 20 kHz, with water cooling at room temperature. Figure 6: a) surface crack initiation on rolling defect (Samp = 360 MPa and Nf = 1.6×10 8 cycles), b) crack initiation on rolling defect (Samp = 360 MPa and Nf = 7.6×10 6 cycles). Figure 7 : a) crack initiation at a corner defect (Samp = 360 MPa and Nf = 1.6×10 8 cycles), b) crack initiation at a corner defect (Samp =360 MPa and Nf =7.6×10 6 cycles)