Looking inside ourselves and out at the world
Independent and neutral with regard to all political and religious orientations,® aims to promote awareness of the major democratic principles on which tolerance is based.

Sound Imaging Used to Find Hidden Cracks in Infrastructure

Finding hidden cracks in large structures, such as bridges and airplanes, can be the difference between life and death, if the flaw leads to a catastrophic collapse.  Scientists at Bristol University in Britain say they have discovered a new way of looking inside crucial metal parts to identify cracks before they fail, using sound imaging. On August 1, 2007, an eight-lane steel bridge over the Mississippi River in Minneapolis, Minnesota, collapsed during rush hour, killing 13 people...

Read complete article
© Voice of America -

Follow us on ...
Facebook Twitter