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  2. Sheet metal - Wikipedia

    en.wikipedia.org/wiki/Sheet_metal

    Manufacturers' Standard Gauge for Sheet Steel is based on an average density of 41.82 lb per square foot per inch thick, [11] equivalent to 501.84 pounds per cubic foot (8,038.7 kg/m 3). Gauge is defined differently for ferrous (iron-based) and non-ferrous metals (e.g. aluminium and brass).

  3. Fracture toughness - Wikipedia

    en.wikipedia.org/wiki/Fracture_toughness

    In addition to this thickness calculation, test specifications have several other requirements that must be met (such as the size of the shear lips) before a test can be said to have resulted in a K IC value. When a test fails to meet the thickness and other plain-strain requirements, the fracture toughness value produced is given the ...

  4. Attenuation coefficient - Wikipedia

    en.wikipedia.org/wiki/Attenuation_coefficient

    Most commonly, the quantity measures the exponential decay of intensity, that is, the value of downward e-folding distance of the original intensity as the energy of the intensity passes through a unit (e.g. one meter) thickness of material, so that an attenuation coefficient of 1 m −1 means that after passing through 1 metre, the radiation ...

  5. Vickers hardness test - Wikipedia

    en.wikipedia.org/wiki/Vickers_hardness_test

    A diamond in the form of a square-based pyramid satisfied these conditions. It had been established that the ideal size of a Brinell impression was 3 ⁄ 8 of the ball diameter. As two tangents to the circle at the ends of a chord 3 d /8 long intersect at 136°, it was decided to use this as the included angle between plane faces of the ...

  6. Area density - Wikipedia

    en.wikipedia.org/wiki/Area_density

    In the paper and fabric industries, it is called grammage and is expressed in grams per square meter (g/m 2); for paper in particular, it may be expressed as pounds per ream of standard sizes ("basis ream"). A related area number density can be defined by replacing mass by number of particles or other countable quantity, with resulting units of ...

  7. Biden administration moves to forgive $4.7 billion of loans ...

    www.aol.com/news/biden-administrations-moves...

    The Biden administration has moved to forgive about $4.7 billion in U.S. loans to Ukraine, State Department spokesperson Matthew Miller said on Wednesday, as outgoing officials seek to do what ...

  8. 10 Foods That Famous Chefs Refuse To Eat - AOL

    www.aol.com/10-foods-famous-chefs-refuse...

    Julia Child’s 1-pot chicken dinner is one every cook should know. Food. The Pioneer Woman. Try cracker-crusted cod with green beans for dinner tonight. News. News. ABC News.

  9. AOL Mail - AOL Help

    help.aol.com/products/aol-webmail

    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.