Research Article
Investigation of the Effects of Submerged Arc Welding Process Parameters on the Mechanical Properties of Pressure Vessel Steel ASTM A283 Grade A
Table 4
Analysis of variance for tensile strength.
| | Source | DF | Seq SS | Adj SS | Adj MS | | |
| | Current | 2 | 233.37 | 233.37 | 116.68 | 14.64 | 0.000 | | Voltage | 1 | 436.11 | 436.11 | 436.11 | 54.73 | 0.000 | | Travel speed | 1 | 351.56 | 351.56 | 351.56 | 44.12 | 0.000 | | Current voltage | 2 | 1326.68 | 1326.68 | 663.34 | 83.25 | 0.000 | | Current travel speed | 2 | 932.89 | 932.89 | 466.44 | 58.54 | 0.000 | | Voltage travel speed | 1 | 37.41 | 37.41 | 37.41 | 4.70 | 0.040 | | Current voltage travel speed | 2 | 252.06 | 252.06 | 126.03 | 15.82 | 0.000 | | Error | 24 | 191.23 | 191.23 | 7.97 | | | | Total | 35 | 3761.31 | | | | | | | % | | % |
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