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  2. Ballistic plate - Wikipedia

    en.wikipedia.org/wiki/Ballistic_plate

    SAPI Cut, a rectangle with two sloped cuts on the top two corners, the name being derived from the SAPI armour plate. Similar, but with larger cuts, is the Shooter's Cut. Swimmer's Cut, similar to a stretched trapezoid on top of a rectangle. Used by SEALs and other seaborne units. Rectangle/Square, a rectangular armoured plate with rounded off ...

  3. Polycarbonate - Wikipedia

    en.wikipedia.org/wiki/Polycarbonate

    Polycarbonate, however, can be safely used as a carbon source in the steel-making industry. [41] Phenol derivatives are environmental pollutants, classified as volatile organic compounds (VOC). Studies show they are likely to facilitate ground level ozone formation and increase photo-chemical smog. [42]

  4. Ceramic armor - Wikipedia

    en.wikipedia.org/wiki/Ceramic_armor

    Ceramic armor is armor used by armored vehicles and in personal armor to resist projectile penetration through its high hardness and compressive strength. In its most basic form, it consists of two primary components: A ceramic layer on the outer surface, called the "strike face," backed up by a ductile fiber reinforced plastic composite or metal layer.

  5. Vehicle armour - Wikipedia

    en.wikipedia.org/wiki/Vehicle_armour

    The polycarbonate layer, usually consisting of products such as Armormax, Makroclear, Cyrolon, Lexan or Tuffak, is often sandwiched between layers of regular glass. The use of plastic in the laminate provides impact-resistance, such as physical assault with a hammer, an axe, etc. The plastic provides little in the way of bullet-resistance.

  6. Composite armour - Wikipedia

    en.wikipedia.org/wiki/Composite_armour

    The Soviet T-64 was the first mass-produced tank with composite armour The Leclerc tank is equipped with NERA (Non-explosive reactive armour) [1] Depending on the operating state, the Leopard 2 has various extended armour elements such as bomb protection for the top, cage armour, extended mine protection (A6M) or additional armour in the form of composite armour MEXAS or AMAP Plasan SandCat ...

  7. Tameshigiri - Wikipedia

    en.wikipedia.org/wiki/Tameshigiri

    Some substances were wara (藁; rice straw), goza (茣蓙; woven rush mats) or tatami-omote (畳表; the top layer of tatami mats), bamboo, and thin steel sheets. [2] In addition, there was a wide variety of cuts used on cadavers and occasionally convicted criminals, [3] from tabi-gata (ankle cut) to O-kesa (diagonal cut from shoulder to ...

  8. Plastic extrusion - Wikipedia

    en.wikipedia.org/wiki/Plastic_extrusion

    Plastic extruder cut in half to show the components At the front of the barrel, the molten plastic leaves the screw and travels through a screen pack to remove any contaminants in the melt. The screens are reinforced by a breaker plate (a thick metal puck with many holes drilled through it) since the pressure at this point can exceed 34 MPa ...

  9. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    used to indicate the word “by” When the letter X is preceded by a space, this means "by". For example, a chamfer may be called out as X [2] or ( ) number of places—for example, 8X or (8) When a dimension is used in multiple places either of these prefixes can be added to the dimension to define how many times this dimension is used.

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