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SEMI F81-1103 © SEMI 2003 7 (a) OD conc avity (b) OD co nvexity Figure 2 OD Concavi ty and OD Convexit y

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SEMI F81-1103 © SEMI 2003 6
(a) Undercut
(b) Center line shrinkage
(c) ID concavity
Figure 1
Rejectable Profile Defects
SEMI F81-1103 © SEMI 2003 7
(a) OD concavity
(b) OD convexity
Figure 2
OD Concavity and OD Convexity
SEMI F81-1103 © SEMI 2003 8
Figure 3
ID Convexity
Figure 4
Weld Width Variation
Figure 5
Weld Bead Meander
Figure 6
Bead Overlap