Issue 47

K. Hachellaf et alii, Frattura ed Integrità Strutturale, 47 (2019) 459-467; DOI: 10.3221/IGF-ESIS.47.36 464 Figure 6: Welded test specimen [12]. Fig. 7 shows a typical aspect of the weld on welded plates with a rotation speed of 875 rpm and advance speed of 24 and 40 mm/min shown in Tab. 3. Figure 7 : Law behavior of welded specimens Table 4 : Tensile strength values and their effectiveness on the welded bead. Tool type : Rotation speed (rpm) Advance speed a (mm/min) Max stress of tensile test Rm max (MPa) Elasticity module E (MPa) Average (x) Standard deviation (  ) Efficiency rate the stress of the welded joint (%) Conical profile (T1) Test N° 1 875 24 22.60 1320 23.257 0.927 5.56 2 40 23.11 2102 7.94 cylindrical profile (T2) 3 875 24 24.61 1500 14.94 4 40 22.71 1433 6.07 No welded sample test 21.41 920 / / /