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- Striations are marks produced on the fracture surface that show the incremental growth of a fatigue crack. A striation marks the position of the crack tip at the time it was made. The term striation generally refers to ductile striations which are rounded bands on the fracture surface separated by depressions or fissures and can have the same appearance on both sides of the mating surfaces of the fatigue crack. Although some research has suggested that many loading cycles are required to form a single striation, it is now generally thought that each striation is the result of a single loading cycle. The presence of striations is used in failure analysis as an indication that a fatigue crack has been growing. Striations are generally not seen when a crack is small even though it is growing by fatigue, but will begin to appear as the crack becomes larger. Not all periodic marks on the fracture surface are striations. The size of a striation for a particular material is typically related to the magnitude of the loading characterised by stress intensity factor range, the mean stress and the environment. The width of a striation is indicative of the overall crack growth rate but can be locally faster or slower on the fracture surface. (en)
- Een striatie is een zichtbare en lange kras, groef, streep of lijn in de op een metalen breukvlak, die is ontstaan door metaalvermoeiing. Bij materiaalonderzoek na breuk kan men de striaties bij vergrotingen tot 1000x zichtbaar maken. Ieder streepje (striatie) op het breukvlak staat voor een belastingscyclus. Deze striaties ontstaan door metaalvermoeiing en worden daarom soms ook aangeduid met de term vermoeiingslijnen. (nl)
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- Een striatie is een zichtbare en lange kras, groef, streep of lijn in de op een metalen breukvlak, die is ontstaan door metaalvermoeiing. Bij materiaalonderzoek na breuk kan men de striaties bij vergrotingen tot 1000x zichtbaar maken. Ieder streepje (striatie) op het breukvlak staat voor een belastingscyclus. Deze striaties ontstaan door metaalvermoeiing en worden daarom soms ook aangeduid met de term vermoeiingslijnen. (nl)
- Striations are marks produced on the fracture surface that show the incremental growth of a fatigue crack. A striation marks the position of the crack tip at the time it was made. The term striation generally refers to ductile striations which are rounded bands on the fracture surface separated by depressions or fissures and can have the same appearance on both sides of the mating surfaces of the fatigue crack. Although some research has suggested that many loading cycles are required to form a single striation, it is now generally thought that each striation is the result of a single loading cycle. (en)
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- Striatie (vermoeiing) (nl)
- Striation (fatigue) (en)
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