Page 119 - Fundamental of Engineering Design
P. 119
Strength of parallel fillet weld
L
Throat = a x cos45
Throat = a x cos45 o o
= 0.707 a
a a = 0.707 a
a a Failure Plane
• Fillet welds are usually fail in shear, where the shear failure occurs along a
plane through the throat of the weld
• Shear stress in fillet weld of length L subjected to load P
• The strength of a fillet weld is based on shear through the throat of the
weld
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