Download: Worst Engineering Disasters - Engineering Fails Documentary

By World Documentary Films


TIP: Right-click and select "Save link as.." to download video

Initializing link download... Initializing link download.....

Worst Engineering Disasters - Engineering Fails Documentary.

In mechanical design, most failures are due to time-varying, or dynamic, loads that are applied to a system. This phenomena is known as fatigue failure. Fatigue is known as the weakness in a material due to variations of stress that are repeatedly applied to said material. For example, when stretching a rubber band to a certain length without breaking it (i.e. not surpassing the yield stress of the rubber band) the rubber band will return to its original form after release; however, repeatedly stretching the rubber band with the same amount of force thousands of times would create micro-cracks in the band which would lead to the rubber band being snapped. The same principle is applied to mechanical materials such as metals.

Read More: