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2. Ultrasonic thickness measurement - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_Thickness...

   In the field of industrial ultrasonic testing, ultrasonic thickness measurement ( UTM) is a method of performing non-destructive measurement (gauging) of the local thickness of a solid element (typically made of metal, if using ultrasound testing for industrial purposes) based on the time taken by the ultrasound wave to return to the surface.

3. Epstein frame - Wikipedia

   en.wikipedia.org/wiki/Epstein_frame

   An Epstein frame or Epstein square is a standardised measurement device for measuring the magnetic properties of soft magnetic materials, especially used for testing of electrical steels. The International Standard for the measurement configuration and conditions are defined by the standard IEC 60404-2:2008 Magnetic materials - Part 2: Methods ...

4. Eddy current - Wikipedia

   en.wikipedia.org/wiki/Eddy_current

   A magnet induces circular electric currents in a metal sheet moving through its magnetic field. See the diagram at right. It shows a metal sheet (C) moving to the right with velocity v under a stationary magnet. The magnetic field (B, green arrows) of the magnet's north pole N passes down through the sheet.

5. Staple (fastener) - Wikipedia

   en.wikipedia.org/wiki/Staple_(fastener)

   A staple is a type of two-pronged fastener, usually metal, used for joining, gathering, or binding materials together. Large staples might be used with a hammer or staple gun for masonry, roofing, corrugated boxes and other heavy-duty uses. Smaller staples are used with a stapler to attach pieces of paper together; such staples are a more ...

6. Steel and tin cans - Wikipedia

   en.wikipedia.org/wiki/Steel_and_tin_cans

   Steel cans are made in many different diameters and volumes, with opening mechanisms that vary from ring pulls and tab openers, to wide open mouths. Drawn-and-ironed (DWI) steel cans. The process of re-forming sheet metal without changing its thickness is known as 'drawing'.

7. Corrugated galvanised iron - Wikipedia

   en.wikipedia.org/wiki/Corrugated_galvanised_iron

   Corrugated galvanised iron ( CGI) or steel, colloquially corrugated iron (near universal), wriggly tin (taken from UK military slang), pailing (in Caribbean English), corrugated sheet metal (in North America), zinc (in Cyprus and Nigeria) or custom orb / corro sheet (Australia) is a building material composed of sheets of hot-dip galvanised ...