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A fillet welded joint is subjected to transverse loading F as shown in the figure. Both legs of the fillets are of size h and the weld length is l. The average shear stress on the throat area is

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ISRO VSSC Technical Assistant Mechanical 14 July 2021 Official Paper
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Explanation:

The strength of a Single transverse fillet weld can be calculated by:

F = (0.707× h × l) × σavg

where h = leg size, l = length of the single weld.

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