Root of weld | Article about root of weld by The Free Dictionary
root of weld
root of weld[′rüt əv ′weld]
The points at which the bottom of the weld and the base metal surfaces intersect. Also known as root.
References in periodicals archive
Samples were welded by inverter source Migatronic PI 200, direct current with direct polarity, with use of fixture for root of weld
Atkinson and Turner  reported that pores in a weld were reduced when the root of weld
groove was open.
Microhardness examination illustrated in figure 4 was done on the three different layers: layer 1 is the top of the weld bead, layer 2 is in the middle and layer 3 is located to the root of weld
bead (Dumitrache, 2000).