Assessment of Rotational Speed and Plunge Rate on Lap Shear Strength of FSSW Joints of AA7075/Mild Steel

Table 4

Influence of speed of tool rotation on the macrograph.

Speed of tool rotation	Macrostructure	Observation
800		TSFL = 6.12 kN; HH = 1.52 mm;
		HW = 1.25 mm; HID = 2.14 mm;
		ABVHTP = 156.23 mm^3
850		TSFL = 7.18 kN; HH = 1.48 mm;
		HW = 1.28 mm; HID = 2.45 mm;
		ABVHTP = 161.21 mm^3
900		TSFL = 9.46 kN; HH = 1.44 mm;
		HW = 1.35 mm; HID = 2.95 mm;
		ABVHTP = 165.02 mm^3
950		TSFL = 8.12 kN; HH = 1.51 mm;
		HW = 1.30 mm; HID = 2.88 mm;
		ABVHTP = 158.52 mm^3
1000		TSFL = 7.21 kN; HH = 1.63 mm;
		HW = 1.25 mm; HID = 2.65 mm;
		ABVHTP = 155.23 mm^3