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Real World: Lessons in Heavy Metal

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Uploaded by on Aug 26, 2009

Watch as NASA engineers use a special welding technique known as friction-stir welding to bond new composite metals used for the Ares I launch vehicle. See how this process adds strength to the material. Learn to convert degrees Fahrenheit to degrees Celsius.

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  • wow !

  • Beside the pressure apply on the materials, the process does not seem very high in cost? is it?

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