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Moment of Force

A butt weld j...

Question

A butt weld joint is developed on steel plates having yield and ultimate tensile strength of 500 MPa and 700 MPa, respectively. the thickness of the plates is 8 mm and width is 20 mm. Improper selection of welding parameters caused an undercut of 3 mm depth along the weld. The maximum transverse tensile load (in kN) carrying capacity ofthe developed weld joint is
70

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Solution

The correct option is A 70
$P_{t} = σ_{t} (t - t_{u n d e r c u t}) L = 700 \times (8 - 3) \times 20 = 700 \times 100 N = 70 k N$

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