Stress of a steel beam, for example, which can overload and bend eventually, if the load on the beam is greater than the design limits of that beam.
Heat can also stress metal to the point of changing shape, losing strength and becoming brittle enough to fracture.
2nd Answer
The above answer is actually describing a load that exceeds the materials ultimate stress. Fatigues does not cause the part to bend.
Stress is a repeated application of a load that is below the ultimate design load that results in microscopic distortion of the metal and can induce cracks. These cracks will eventually grow under repeated load applications and resulting in failure of the part.
All material is tested for its fatigue Endurance Limit. If you design the part so that it will have repeated loads below this Endurance Limit OR design it so that it does not see high cycles of load application, then the part can be designed so that it will not fatigue.
There is no one single answer to your question as various alloying materials will achieve this. There are also various forms of fatigue failure, for instance thermal and bending, which will be affected by what alloying material is present.
Yes it will bring down the fatigue life and the material will not endure at any point. Degrading nature of fatigue loading on the materials is compounded by the corrosion interaction. Synergistic damage - The damage will be more than the addition of damages due to corrosion and fatigue loading. The formation of intrusion and extrusion due to fatigue loading leads to the notches. The corrosion media will enter the notches and forms oxide with the base metal and it will be passive to further corrosion. But the fatigue loading will disturb the passive layer and facilitate the media to corrode the fresh material. Hence it will drastically decrease the fatigue life of the material.
The fatigue life of metals and some plastics too, can be affected by their surface finishes. Fatigue nearly always starts as a surface crack which spreads across the cross-section of the material and weakens it until it is unable to carry the load and it fails either by direct tension of shear stress on the uncracked remnant of the original cross-section. The surface finish of the material contributes adversly to the initiatian period before a crack starts, and when the surface is rough a stress concentration is present there. When there is no roughness present the crystaline nature of the material itself may be the cause of the crack starting. But when the surface is rough this process is faster due to having greater local stresses. So with increasingly rougher surfaces the fatigue life becomes progressively shorter. Depending on the spectrum of applied loads, this very local stress is responsible for the initiation of the crack which spreads with time. In sheet metal the spread is slow but in heavy solid pieces of metal, the speed of the crack is much faster so the start and finishing times are not very different.
If electrons are left behind in metal this will increase the voltage difference between a metal electrode and a solution. Also if the solution becomes more positive this will cause an increase.
In 1946 when German inventor Fred Olaf cut a field with a cow and thought "Hey I know what I want, some macaroni cheese". So he ate it with a knife then he attached the knife to the cow and ... voila! A metal plow.
The ISBN of Metal Fatigue - novel - is 9780732256333.
Metal Fatigue - novel - has 458 pages.
Metal Fatigue - novel - was created on 1996-05-29.
The organelle that would cause fatigue is called the mitochondria. However, it will only cause fatigue if there's a defect in it.
No, but fever can cause fatigue. Fevers are caused by infections.
If you are referring to Human Beings it can be Physical or Metal fatigue.
Paul Anthony Bartolotta has written: 'Fatigue life prediction of an intermetallic matrix composite at elevated temperatures' -- subject(s): Fatigue life, Metal fatigue, Thermal fatigue, Metal matrix composites
usually metal fatigue.
Tension held in the jaw can cause fatigue. Holding tension in any muscle group can cause fatigue. Holding your jaw tight can also cause neck pain and headaches.
Bhaskar S. Majumdar has written: 'Isothermal fatigue mechanisms in Ti-based metal matrix composites' -- subject(s): Debonding (Materials), Metal fatigue, Crack initiation, Metals, Metallic composites, FaiIure analaysis, Fatigue, Metal matrix composites, Fatigue life
Fatigue,excessive speed and distracrion
There are different forms of fatigue. The most common ones include metabolic fatigue, muscular fatigue, energy depletion and fatigue of the nervous system.