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Fatigue has traditionally been associated with the failure of metal components which led to the term metal fatigue. In the nineteenth century, the sudden failing of metal railway axles was thought to be caused by the metal crystallising because of the brittle appearance of the fracture surface, but this has since been disproved. [ 1 ]
Directed attention fatigue. Directed attention fatigue ( DAF) is a neuro-psychological phenomenon that results from overuse of the brain's inhibitory attention mechanisms, which handle incoming distractions while maintaining focus on a specific task. The greatest threat to a given focus of attention is competition from other stimuli that can ...
The fatigue limit or endurance limit is the stress level below which an infinite number of loading cycles can be applied to a material without causing fatigue failure. [ 1] Some metals such as ferrous alloys and titanium alloys have a distinct limit, [ 2] whereas others such as aluminium and copper do not and will eventually fail even from ...
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 ...
Decision fatigue is thought to be a result of unconscious, psychobiological processes, and is a reaction to sustained cognitive, emotional and decisional load, as opposed to a trait or deficiency. [ 6] Decision fatigue is an emergent construct [ 6] that has several possible applications in the fields of healthcare psychology, behavioural ...
Reactive inhibition is a phrase coined by Clark L. Hull in his 1943 book titled Principles of Behavior. He defined it as: Whenever any reaction is evoked in an organism there is left a condition or state which acts as a primary negative motivation in that it has an innate capacity to produce a cessation of the activity which produced the state.
Engineering psychology, also known as Human Factors Engineering, is the science of human behavior and capability, applied to the design and operation of systems and technology. [1] As an applied field of psychology and an interdisciplinary part of ergonomics , it aims to improve the relationships between people and machines by redesigning ...
Psychological stress. In psychology, stress is a feeling of emotional strain and pressure. [ 1] Stress is a type of psychological pain. Small amounts of stress may be beneficial, as it can improve athletic performance, motivation and reaction to the environment. Excessive amounts of stress, however, can increase the risk of strokes, heart ...