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The reason most structures fail isn’t due to shoddy material or violent impact. It’s something far simpler, smaller and even dull: prolonged, low-amplitude fatigue.
31 January 2007，Many insects’ wings are a special flexible shape to increase thrust and fly efficiently, engineers have found. This shape allows them to produce the vortices – spinning masses of air –...
Bridge future: $100M question: Chronic cracks found in Patroon Island span may require new structure
Bridge transportation
2007/1/23
Jan. 14--ALBANY -- The state Department of Transportation, hustling for years to stem a persistent problem with cracks in the steel of the Patroon Island Bridge, is considering replacing the massive s...