Fatigue due to repetitive strain is the leading cause of failure in metal components and structures, but new research shows how crystalline structures called nanotwins can slow the accumulation of ...

Metals fatigue failures occur when structures are subjected to high stress over an extended period of time. They cause metals to fail at a stresses much lower than they can normally withstand. The ...

Things don’t fall from the sky without a damn good reason. US lawyers Baum Hedlund, who specialize in litigation concerning transport accidents, lists human errors as the main reasons (53 percent) for ...

(Santa Barbara, Calif.) -- Take a wire paperclip. Now, bend it back and forth in the same spot 15, maybe 20 times. Chances are the paperclip will have broken before you finish. This is due to what's ...

Fatigue life is a key concern in welded-steel frames for mobile equipment that experience large and varying dynamic loads. For engineers who design welded-steel structures subject to dynamic loading, ...

During an experiment designed to analyze how metals perform under repeated stress, researchers at Sandia National Laboratories saw something unexpected – a piece of metal that had cracked began to ...

For example, every broken railcar wheel rim that I have examined triggered from a fatigue crack defect—usually substantially larger than one inch in dimension. In some cases, multiple large fatigue ...

An overview of fatigue failure and how it affects mechanical systems. How FEA software enables engineers to predict fatigue failure points on structural designs, before the manufacturing process. From ...

RAILWAY AGE, JUNE 2023 ISSUE: Welcome to “Timeout for Tech with Gary T. Fry, Ph.D., P.E.” Each month, we examine a technology topic about which professionals in the railway industry have asked to ...