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Tech/Engineering - Construction / Civil Engineering | | English term or phrase: fatigue-loaded structures | Cement injections are not permitted in fatigue-loaded structures or structures in which individual wires are to be replaced during the planned lifetime of the structure.
Slogotas konstrukcijas?
Nogurumam pakļautas konstrukcijas? |
|   Egils TurksKudoZ activityQuestions: 23 (none open) ( 4 closed without grading) Answers: 83
Latvia
| | Local time: 01:44
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| | Latvian translation:slodzes iedarbībā novājinātas struktūras | Explanation:
Definition:
Fatique: The weakening or failure of a material, such as metal or wood, resulting from prolonged stress.
WHAT IS FATIGUE LOADING?
There are different types of fatigue loading. One type is zero-to-max-to zero, where a part which is carrying no load is then subjected to a load, and later, the load is removed, so the part goes back to the no-load condition. An example of this type of loading is a chain used to haul logs behind a tractor.
Another type of fatigue loading is a varying load superimposed on a constant load. The suspension wires in a railroad bridge are an example of this type. The wires have a constant static tensile load from the weight of the bridge, and an additional tensile load when a train is on the bridge.
The worst case of fatigue loading is the case known as fully-reversing load. One cycle of this type of fatigue loading occurs when a tensile stress of some value is applied to an unloaded part and then released, then a compressive stress of the same value is applied and released.
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| Selected response from:
Inese Poga-Smith
Canada
Local time: 18:44
| Grading comment Paldies! Ļoti izsmeļoši.
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9 hrs confidence: slodzes iedarbībā novājinātas struktūras
Explanation:
Definition:
Fatique: The weakening or failure of a material, such as metal or wood, resulting from prolonged stress.
WHAT IS FATIGUE LOADING?
There are different types of fatigue loading. One type is zero-to-max-to zero, where a part which is carrying no load is then subjected to a load, and later, the load is removed, so the part goes back to the no-load condition. An example of this type of loading is a chain used to haul logs behind a tractor.
Another type of fatigue loading is a varying load superimposed on a constant load. The suspension wires in a railroad bridge are an example of this type. The wires have a constant static tensile load from the weight of the bridge, and an additional tensile load when a train is on the bridge.
The worst case of fatigue loading is the case known as fully-reversing load. One cycle of this type of fatigue loading occurs when a tensile stress of some value is applied to an unloaded part and then released, then a compressive stress of the same value is applied and released.
Reference: http://www.epi-eng.com/mechanical_engineering_basics/fatigue...
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