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A resistance spot-welding operation performs a series of spot welds between two parts of sheet steel...

A resistance spot-welding operation performs a series of spot welds between two parts of sheet steel that are each 1/8 in thick. The steel has a unit melting energy = 130 Btu/in3. Weld duration is set at 0.25 sec, and current = 11,000 amp. The weld nugget has a diameter = 0.30 in. Experience has shown that 50% of the supplied heat melts the nugget, and the rest is dissipated. If the electrical resistance between the surfaces is 125 micro-ohms, what is the average thickness of the weld nugget assuming it is disk-shaped (a short cylinder)?  

Textbook: Manufacturing of engineering and technology: 7th edition: author: serope Kalpakjian

engineering   Mechanical-Engineering   
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