Table 3 Weld parameters and their levels.

From: Reliability assessment of friction stir welds in AA100 aluminium alloy using ANN and ANFIS predictive models

Parameter

Levels

1

2

3

Spindle speed (rpm)

1100

1200

1300

Feed rate (mm/min)

15

18

21

Axial load (kN)

5

7

9

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