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After many acquisitions, ACCO went public in 1983, and was acquired in 1987 by American Brands (later Fortune Brands). In 1990, ACCO acquired Hetzel in Germany, [4] a company selling stationery products. [5] In 1992, ACCO UK was created from the integration of ACCO Europe and Rexel Ltd. ACCO UK is the UK's largest manufacturer of office products.
Coils in the probe are periodically charged by current pulses and thus generate a magnetic field. On the surface of any electrically conductive material which is in the magnetic field eddy currents are produced. They induce a magnetic field in opposite directions. The resulting change in voltage can be utilized for the measurement.
Magnetic yoke is a hand-held device that induces a magnetic field between two poles. Common applications are for outdoor use, remote locations, and weld inspection . The drawback of magnetic yokes is that they only induce a magnetic field between the poles, so large-scale inspections using the device can be time-consuming.
The instrument uses the world's first patented non-destructive testing method for concrete. 1950 – J. Kaiser introduces acoustic emission as an NDT method. (Basic source for above: Hellier, 2001) Note the number of advancements made during the WWII era, a time when industrial quality control was growing in importance. 1955 – ICNDT founded ...
Magnetic levitation can be stabilised using different techniques; here rotation (spin) is used. Magnetic levitation (maglev) or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic force is used to counteract the effects of the gravitational force and any other forces. [2]
Here are the best games of college football's Week 14. (Bruno Rouby/Yahoo Sports)
“I just started crying,” Vahedian recalls of her boyfriend’s gesture. “I said [to him], ‘No. That's too much on you.’ He basically said, 'I have a steady job now.
Paramagnetic materials are attracted to magnetic fields, hence have a relative magnetic permeability greater than one (or, equivalently, a positive magnetic susceptibility). The magnetic moment induced by the applied field is linear in the field strength, and it is rather weak. It typically requires a sensitive analytical balance to detect the ...
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