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Dye penetrant inspection (DP), also called liquid penetrate inspection (LPI) or penetrant testing (PT), is a widely applied and low-cost inspection method used to check surface-breaking defects in all non-porous materials (metals, plastics, or ceramics).
Internal rotary inspection system (IRIS) is an ultrasonic method for the nondestructive testing of pipes and tubes. The IRIS probe is inserted into a tube that is flooded with water, and the probe is pulled out slowly as the data is displayed and recorded. The ultrasonic beam allows detection of metal loss from the inside and outside of the ...
Magnetic particle inspection (MPI) is a nondestructive testing process where a magnetic field is used for detecting surface, and shallow subsurface, discontinuities in ferromagnetic materials. Examples of ferromagnetic materials include iron , nickel , cobalt , and some of their alloys .
Ultrasonic testing is often performed on steel and other metals and alloys, though it can also be used on concrete, wood and composites, albeit with less resolution. It is used in many industries including steel and aluminium construction, metallurgy, manufacturing, aerospace, automotive and other transportation sectors.
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Lustron House, pre-fabricated, all steel, porcelain-enamel, 2 bedrooms on concrete slab, built in 1948, 4647 3rd Street South, Arlington, Arlington County, VA, demolished 2007. 5201 12th Street , South, Arlington, VA, surveyed by the Historic American Buildings Survey (HABS), [ 35 ] demolished October 24, 2016.
Germain Amphitheater (originally Polaris Amphitheater) was a 20,000-seat outdoor entertainment venue located in Columbus, Ohio, near the suburb of Westerville. The venue opened as part of a large development venture off of Interstate Highway I-71. There were 6,700 seats in an open-air pavilion—much of it under cover—and room for another ...
Newman's Energy Machine was a DC motor which the inventor, Joseph Newman, claimed to produce mechanical power exceeding the electrical power being supplied to it. In 1979, Newman attempted to patent the device, but it was rejected by the United States Patent Office as being a perpetual motion machine . [ 1 ]