An Evaluation of Fatigue Strength for Various Kinds of Spot-Welded Test Specimens

Fatigue strength evaluation of cross-tension spot weld joints of cold rolled mild steel sheet

“…5 as a function of applied load amplitude, including other data on different specimen geometries [10,11]. Only the current data showed a strong correlation among the specimens in terms of the applied load amplitude.…”

“…8. Fatigue life as a function of J-integral range for the cross-tension specimens, including other data on different specimen geometries [10,11]. erature involving different specimen geometries (R % 0.76).…”

Geometric functions of stress intensity factor solutions for spot welds in U-shape specimens

“…Table 7 lists the values of F I for t/a, W/a, L/a, H/a, and r/a of Ut, ChS and ChL specimens used in Mizui et al (1988) and Kang et al (2000). Note that r/a for the specimens of Mizui et al (1988) and Kang et al (2000) is not available. The flanges of these specimens are constrained by the spacers.…”

“…Here, the experimental data for spot welds in various U-shape specimens under cyclic opening loading conditions in Mizui et al (1988) and Kang et al (2000) are selected. Table 6 lists the average applied load ranges DF at different fatigue lives for typical U-shape specimens (marked by Ut) and Chrysler specimens with small and large spot welds (marked by ChS and ChL, respectively) under cyclic opening loading conditions in Mizui et al (1988) and Kang et al (2000). As listed in Table 6, the load ranges of Ut specimens are much smaller than those of ChL and ChS specimens.…”

“…The average load ranges DF at different fatigue lives for typical U-shape specimens (marked by Ut) and Chrysler specimens with small and large spot welds (marked by ChS and ChL, respectively) under cyclic opening loading conditions in Mizui et al (1988) and Kang et al (2000).…”