Figure 7From: Fatigue Resistance and Failure Behavior of Penetration and Non-Penetration Laser Welded Lap JointsCross-sectional micrographs of fatigue failure specimens: a 0.8+1.5-N failed at 1.01 × 106 cycle, b 0.8+1.5-N failed 3.84 × 104, c 1.5+0.8-P failed at 1.68 × 106 cycle, d 1.5+0.8-P failed at 1.51 × 104 cycleBack to article page