The weakening of a metal when subjected to repeated vibrations or strains.
(resistance to) The ability of the material to serve its purpose for an extended period of time under stress. See also, brittleness, ductility, elasticity, hardness, malleability, toughness
When a bearing is subjected to a repeated cycle of loading, this eventually takes its tol on the bearing, leading to failure.
The progressive quality of materials which leads to fracture under repeated or fluctuating stresses
It is the phenomena of decay of the physical and chemical characteristics of the tyre rubber and textiles due to repetition of the stress cycles. It is strongly influenced by temperature. It depends on the operating conditions: inflation pressure, load, speed, type of driving, of road, road surface, external temperature, etc.
The effect on a metal of repeated cycles of stress. If these changes in stress are of sufficient magnitude and number the metal can fracture at a stress level considerably below that of its tensile strength.
the effect on certain materials, especially metals, undergoing repeated stresses.
Process of birth and growth of cracks in structures subjected to repetitive load.
(metal) The tendency of a metal to fracture in a brittle manner under conditions of repeated cyclic stressing at stress levels below its tensile strength.
Just as the human body can break down if exposed too long to an adverse environment or repeated stress, so also can materials fail due to fatigue. A material can fail by repeated exposure to a stress well below its normal breaking point purely by cycling the stress on and off. Water heaters can be exposed to repeated pressure fluctuations during their life and must be designed to resist the effects of fatigue.
Permanent structural change that occurs in a material subjected to fluctuating stress and strain. However, in the case of glass, fatigue is determined by long-term static testing and is analogous to stress rupture in other materials. In general, fatigue failure can occur with stress levels below the elastic limit.
A softening or loss of load bearing capacity. This condition frequently is a cause of complaints with innerspring bedding and low quality foam mattresses.
The effect of the repeated imposition of a mechanical stress on a structure such as a solder bump wirebond.
Stress that causes material failure from repeated, cyclic vibration or stress.
In referring to human activity, fatigue is the reduction in muscular and mental capability owing to prolonged or strenuous mental or physical activity. In referring to the strength of metals, fatigue is the deterioration of the metallic structure owing to repeated loading.
Loss of efficiency in the performance of a motor act when that act is repeated in rapid succession.
The tendency of a material to break under repeated strain.
Loss of energy following mental or physical activity.
used of materials (especially metals) in a weakened state caused by long stress; "metal fatigue"
A softening or loss of firmness. Fatigue can be measured in the laboratory by repeatedly compressing a foam sample and measuring the change in IFD.
See comments under spring steel and endurance strength of steels.
A loss of load-bearing capacity in a mattress.
Structural failure of a material caused by repeated application of stresses.
A material failure caused by repeated application of loads that are individually too small to cause failure.
Cracking, flaking or spalling of a surface due to stresses beyond the endurance limit of the material.
the tendency of a material to weaken or fail during repeated tension or compression cycles. For ropes, degradation is often caused by internal abrasion which cannot be detected by the user. It is normally accelerated as the load increases as a percentage or its rated strength.
Material failure caused by cyclic motion
The failure of a material's mechanical properties as a result of repeated stress.
A lack of energy or a feeling of being tired, weak, or worn out that can cause stress and decrease a person's ability to function normally. follow-up care: Seeing a doctor for regular checkups following cancer treatment.
(1) A condition of stress created by repeated flexing or impact force upon the adhesive - adherend interface; (2) The failure or decay of mechanical properties after repeated stress applications. Fatigue tests provide information on the ability of an adhesive to resist the development of cracks which will bring about failure as a result of continued cyclic bonds.
failure, at relatively low stress levels, of structures that are subjected to fluctuating and cyclic stresses.
The tendency for a metal to break under conditions of repeated cyclic stressing considerably below the ultimate tensile strength.
The tendency to fracture by means of a progressive crack under repeated alternating or cyclic stresses considerably below the tensile strength.
The phenomenon leading to fracture under repeated or fluctuating stresses having a maximum value less than the tensile strength of the material. Fatigue fractures are progressive and grow under the action of the fluctuating stress.
Employment-related causes of fatigue include overwork, long hours, shiftwork and stress. Stress and fatigue cost businesses by lowering productivity and performance; increasing the number of mistakes, accidents and near-misses, increasing employee turnover, absenteeism and sick leave, and lowering motivation and commitment.
As applied to wire rope, the term usually refers to the process of progressive fracture resulting from the bending of individual wires. These fractures may and usually do occur at bending stresses well below the ultimate strength of the material; it is not an abnormality although it may be accelerated due to conditions in the rope such as rust or lack of lubrication.
A tendency to soften under cyclic stresses. Fatigue of foam samples can be measured by cyclicly compressing and relaxing a flexible polyurethane foam sample and measuring its change in IFD.
Term commonly applied to progressive fracture of wires of a rope Internally Lubricated - Wire rope or strand having all wires coated with lubricant
The deterioration of a pavement or other structure caused by the action of repetitive vehicle loads
the application and release of stresses as metal is used which cause small cracks to grow, during many cycles of application, until they fracture.
failure of a metal under repeated loading.
Weakness in metal caused by repeated stress in metal is known as fatigue.
A condition leading to the eventual fracture of a material due to constant or repeated stresses that exert less pressure than the tensile strength of the material.
The effect on metal of repeated cycles of stress. The insidious feature of fatigue failure is that there is no obvious warning, a crack forms without appreciable deformation of structure making it difficult to detect the presence of growing cracks. Fractures usually start from small nicks or scratches or fillets which cause a localized concentration of stress. Failure can be influenced by a number of factors including size, shape and design of the component, condition of the surface or operating environment.
metal condition that occurs when minute cracking begins to appear in the metal and progressively grow under repeated or fluctuating stresses.
Fatigue refers to the breakdown of material integrety when subjected to repeated bending or deformation. Plastics like ABS show relatively high fatigue and break or rip if bent repeatedly. Other plastics like polypropylene show little fatigue and can stand repeat deformation in applications like clips or .
A process leading to fracture resulting from repeated stress cycles well below the normal tensile strength. Such failures start as tiny cracks which grow to cause total failure.
The permanent structural change that occurs in a material that has been subjected to fluctuating stress and strain.
A cumulative effect causing a metal to fail after repeated applications of stress none of which exceeds the ultimate tensile strength. The fatigue strength (or fatigue limits) is the stress that will cause failure after specified number cycles.
Cause of structural deficiencies, usually due to repetitive loading over time.
a structural failure due to flexing caused by cyclic motions or cyclic differential pressures which do not exceed the tensile strength of the material.
The state of a metal after repeated stress, leading to an eventual fracture.
A structural failure which occurs as the result of a load being applied and removed, or reversed, repeatedly over a long period of time, or a large number of cycles.
In terms of training and exercise it may be defined as: The failure of one or more neuromuscular energy systems (phosphagen, glycolysis, & oxidative systems), cause by repetitive movements (exercising), of given intensities (intrinsic/extrinsic resistance loads, etc.), over specific durations (minutes, hours, days, weeks, etc.
The weakening or failure of a material, such as metal or wood, resulting from prolonged cyclic stress.
The failure or decay of mechanical properties after repeated applications of stess. Fatigue tests give information on the ability of a material to resist the development of cracks, which eventually bring about failure as a result of a large number of cycles.
The loss of load-bearing ability of a material under repeated load application, as opposed to a single load.
In materials science, fatigue is the progressive, localised, and permanent structural damage that occurs when a material is subjected to cyclic or fluctuating strains at nominal stresses that have maximum values less than (often much less than) the static yield strength of the material. The resulting stress may be below the ultimate tensile stress, or even the yield stress of the material, yet still cause catastrophic failure.