In 1940, a scientist testing a cracked silicon slab uncovered a hidden effect that helped build modern electronics

In 1940, a cracked silicon crystal at Bell Laboratories led Russell Ohl to discover the p-n junction, a pivotal moment for ...
Oil

Full-scale burst, crack-arrest testing vets X-120 line pipe

Based on a presentation to the 13th International Offshore and Polar Engineering Conference, Honolulu, May 25-30, 2003. A new high-strength steel with a specified minimum yield strength of 120 ksi has ...
UPI

Crack discovered on F-35 test plane

WASHINGTON, Nov. 17 (UPI) --Pentagon testers for the F-35C reported a crack on the wing spar of a test aircraft, prompting contractor engineers to formulate a solution. The cracks were discovered on a ...
Electronic Design

Finding cracked parts before they break

Eddy current testing has been used for at least 50 years to inspect conductive parts for surface imperfections such as cracks or scratches. Fundamentally, the technique is comparative—it only ...