For a butt weld joint of two plates, which one of the following loading scenarios has the least permissible stress?
Show Hint
- Tensile
- Bending
- Bearing
- Shear
The Correct Option is D
Solution and Explanation
Tensile: Welds can generally handle tensile loads well and permissible stresses are relatively high.
Bending: Permissible stress under bending is lower than tension but still higher than shear.
Bearing: Bearing stress typically refers to compressive stress at contact surfaces and is not usually the limiting factor in butt welds.
Shear: Butt welds are weakest in shear as the shear plane cuts through the throat area of the weld, which is the minimum cross-sectional area.
Hence, the permissible stress under shear loading is the least for butt welds.
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