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In metallurgy, peening is the process of working a metal's surface to improve its material properties, usually by mechanical means, such as hammer blows, by blasting with shot (shot peening), focusing light (laser peening), or in recent years, with water column impacts (water jet peening) and cavitation jets (cavitation peening). [1]
Because peening typically produces larger surface features than sand-blasting, the resulting effect is more pronounced. Shot peening and abrasive blasting can apply materials on metal surfaces. When the shot or grit particles are blasted through a powder or liquid containing the desired surface coating, the impact plates or coats the workpiece ...
Original Rapatronic Camera on display at the National Atomic Testing Museum in Las Vegas, NV. Nuclear explosion from the Tumbler-Snapper test series in Nevada, circa 1952 photographed by a rapatronic camera less than 1 millisecond after detonation. In this shot, the fireball is about 20 m (66 ft) across.
Rope trick effects visible from one of Operation Tumbler–Snapper's tower-mounted test shots in 1952, taken with a rapatronic camera. The adjacent photograph shows two unusual phenomena: bright spikes projecting from the bottom of the fireball, and the peculiar mottling of the expanding fireball surface.
The most rigid requirements are applicable for Almen strips and checking devices (Almen gauges) used in the aerospace industry. The generic requirements can be found in SAE specifications. Another operation to gauge the intensity of a shot peening process is the use of an Almen round , developed by R. Bosshard.
The iron lung was less invasive than modern technology, but it would be far less effective in treating acute or respiratory conditions that require high-pressure support, like pneumonia, COVID-19 ...
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Plenty know J. Robert Oppenheimer's name, but do you know the Ames scientists who contributed to the atomic bomb? How work at Iowa State made Oppenheimer's Manhattan Project and the atomic bomb ...