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  2. Striation (fatigue) - Wikipedia

    en.wikipedia.org/wiki/Striation_(fatigue)

    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 ...

  3. Striation - Wikipedia

    en.wikipedia.org/wiki/Striation

    Striations means a series of ridges, furrows or linear marks, and is used in several ways: Glacial striation; Striation (fatigue), in material; Striation (geology), a striation as a result of a geological fault; Striation Valley, in Antarctica; In hyperbolic geometry, a striation is a reflection across two parallel mirrors. In anatomy, striated ...

  4. Fatigue (material) - Wikipedia

    en.wikipedia.org/wiki/Fatigue_(material)

    Striations mark the position of the crack tip and the width of each striation represents the growth from one loading cycle. Striations are a result of plasticity at the crack tip. When the stress intensity exceeds a critical value known as the fracture toughness, unsustainable fast fracture will occur, usually by a process of microvoid ...

  5. Forensic firearm examination - Wikipedia

    en.wikipedia.org/wiki/Forensic_firearm_examination

    Striation images can also be uploaded to national databases. Furthermore, the markings can be compared to other images in an attempt to link one weapon to multiple crime scenes. Like all forensic specialties, forensic firearm examiners are subject to being called to testify in court as expert witnesses. However, the reliability of some ...

  6. Striation (geology) - Wikipedia

    en.wikipedia.org/wiki/Striation_(geology)

    In geology, a striation is a groove, created by a geological process, on the surface of a rock or a mineral. In structural geology, striations are linear furrows, or linear marks, generated from fault movement. The striation's direction reveals the movement direction in the fault plane. [1]

  7. Glacial striation - Wikipedia

    en.wikipedia.org/wiki/Glacial_striation

    The following affect the rate of abrasion: [1] The amount of rock debris embedded in the basal surface of the ice. If there is no rock in the basal surface of the ice there will be no abrasion, but if there is too much rock in the basal surface of the ice the motion of the glacier will be affected, thus affecting abrasion rates.

  8. The Amazon Prime symbol probably doesn't mean what you think ...

    www.aol.com/news/2016-11-17-the-amazon-prime...

    In actuality, any of Amazon's 3 million marketplace sellers can use the Amazon warehouse to house and ship their items and get the so-called "coveted" mark on its products.

  9. Sole markings - Wikipedia

    en.wikipedia.org/wiki/Sole_markings

    A slide mark is a long, relatively wide, but shallow gouge left in a muddy bed caused by sliding of a soft-body object such as a bed of algae or slumping of sediment. [6] Drag marks are narrower and deeper than slide marks, but retain the same length. Drag marks create a groove or striation caused by a physically hard object like a rock or ...