Materials science

welding: a matter of life and death.

On September 9, 2010, a 30-inch steel pipe carrying natural gas burst in San Bruno, CA, producing a wall of fire more than a thousand feet high, killing eight people, injuring numerous others, destroying 37 houses, and damaging 18 more. Friday, the National Transportation Safety Board reported that numerous welding defects were found in the pipe that had burst.

vis-co-e-las-tic-i-ty ex-pi-al-ido-cious or… what can’t you do with carbon nanotubes?

Some words are just so much fun to say. My father claimed that, as a child, I was inordinately amused by long Latin words from his legal texts.
But you must admit that viscoelasticity is just a cool word. Like most words, you can break it down into its component parts: viscous and elastic. And like most things in physics, it’s almost always “beyond the scope of the course”. You can talk in a limited way about elasticity (spring constants) and sometimes you’ll learn a little about viscosity, but viscoelasticity consistently fails to make it into most introductory physics books. That’s too bad because it’s not only a fun concept, it is a useful concept.

how many horses under the hood..? none – i’ve got cows.

ALMS is a good platform for automotive industry companies pursuing greener products. The Michelin Green X Challenge, which rewards the fastest and most energy efficient cars, considers only gasoline usage at the moment, but as the series evolves, they will likely expand to include another major contributor to petroleum use in cars: oil.

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