Cognitive fatigue manifests when the brain is overworked or stressed from prolonged periods of mental effort. This form of fatigue can impair attention, decision making, reaction times, and emotional ...

Static flexural testing has long been conducted because it is a simple method for evaluating all types of materials. Static flexural testing of composite materials, in particular, was discussed in my ...

Fig. 1. Standard method used for displaying fatigue test results. 1a (right) shows standard fatigue testing terminology, and 1b. (left) depicts an S-N diagram. Photo Credit: Dan Adams Fatigue testing ...

A few guidelines show how to correctly use FEA stresses to find reasonable margins of safety. Although finite-element analysis has become an indispensable part of engineering, a few users knock it ...

Material fatigue is generally considered the most-common failure mode for welded parts and structures subject to dynamic loads and stresses. The two previous articles in this series delved into the ...

Engineers have demonstrated improvements in the fatigue life of high strength aluminum alloys by 25 times -- a significant outcome for the transport manufacturing industry. A world-first study by ...

Fatigue can result from a mental or physical health condition, medication use, or chronic pain, among other reasons. Treatment involves managing the underlying cause. Physical and mental fatigue are ...