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Creep resistance is a key property of the refractory metals. In metals, the starting of creep correlates with the melting point of the material; the creep in aluminium alloys starts at 200 °C, while for refractory metals temperatures above 1500 °C are necessary.
Aluminium oxynitride (marketed under the name ALON by Surmet Corporation [3]) is a transparent ceramic composed of aluminium, oxygen and nitrogen.Aluminium oxynitride is optically transparent (≥80% for 2 mm thickness) in the near-ultraviolet, visible, and mid-wave-infrared regions of the electromagnetic spectrum.
The AM General BRV-O (Blast Resistant Vehicle - Off road) competed in an original field of six vehicle designs as part of the JLTV Joint Light Tactical Vehicle program that will replace the Humvee. [3]
Natural slate is also fire resistant and energy efficient. [21] Slate roof tiles are usually fixed (fastened) either with nails or with hooks (as is common with Spanish slate). [22] In the UK, fixing is typically with double nails onto timber battens (England and Wales) [23] or nailed directly onto timber sarking boards (Scotland and Northern ...
VS-50 mine A deminer from non-governmental organisation MAG (Mines Advisory Group) disarms a VS-50 landmine in Dohuk governorate, West Region of Iraq. The VS-50 is a circular plastic-cased anti-personnel blast mine that entered production in 1985.
The VS-AT4 uses a blast-resistant mechanical pressure fuze. In contrast, the VS-AT4-EL uses a programmable electronic pressure fuze with an integral anti-lifting function. The electronic fuze in the VS-AT4 has an active life of between one hour and one year, which can be set in one-hour increments, at the end of which the mine will either self ...
The mine is blast resistant since rapid depression of the fuze will push the fuze casing straight down without any revolution. The lugs on the inner fuze assembly will then slide into vertical groves instead of the diagonal ones. The striker retaining balls will then be prevented from coming in line with the groves in the outer casing and the ...
Bulk moduli, shear moduli, and elasticity are the key factors in the superhard classification process. The incompressibility of a material is quantified by the bulk modulus B, which measures the resistance of a solid to volume compression under hydrostatic stress as B = −Vdp/dV. Here V is the volume, p is pressure, and dp/dV is the partial ...