Metal fatigue occurs when metal – including parts in machines, vehicles and structures – sustains microscopic cracks after being exposed to repeated stress or motion, damage that tends to ...

Studying fatigue cracks at the nanoscale: Sandia National Laboratories researcher Ryan Schoell uses a specialized transmission electron microscope technique developed by Khalid Hattar, Dan Bufford and ...

Peak stresses exceed the minimum levels needed to produce fatigue crack defects in wheels and rails. (Courtesy of Gary T. Fry.) For example, Figure 1 (above) shows stress results from a computer model ...

The Johns Hopkins research interest was in trying to enrich the fundamental understanding of how cracks initiate, which is the initiation stage of a fatigue fracture. El-Awady defines “fracture ...

The accumulated metal fatigue started as a small crack which grew until the axle was twisted in two. The [Brick Experiment Channel] is a fun one to check out, and we’ve featured them before.

Metal fatigue may have caused the fuel-line cracks that have grounded NASA’s entire space shuttle fleet, according to independent materials experts. They say the parts of the orbiter’s fuel ...

"New method can pinpoint cracks in metal long before they cause catastrophes." ScienceDaily. ScienceDaily, 10 October 2020. <www.sciencedaily.com / releases / 2020 / 10 / 201008142150.htm>.

If a fatigue failure is suspected, there are certain characteristics that you can look for, and the first is surface cracks. It’s not uncommon to find multiple cracks in the region where the ...

Metal fatigue occurs when metal - including parts in machines, vehicles and structures - sustains microscopic cracks after being exposed to repeated stress or motion, damage that tends to worsen ...