Page 125 - Fundamental Of Design In Mechanical Engineering

Strength of transverse fillet weld

A fillet weld, shown in figure is made

with equal legs. The thinnest section
is then at the throat of the weld, at

45° from the legs. The governing

stress in fillet welds is shear on the
throat of the weld, as show in figure.

Observe from this figure that in the

fillet weld aligned parallel to the
load, the shear stress occurs along

the throat of the fillet parallel to the

load. In a fillet weld aligned

transverse to the load; the shear
stress occurs at 45° to the load,

acting transverse to the axis of the Figure 3-15 Fillet weld. (a) Cross section of

fillet. weld showing throat and legs; (b) shear
planes.

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