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  • The dissolution behavior of individual powder particles
    On top of this glass slide, a 50-μm thick metal shim with a punched rectangular hole was placed (see Fig. 1 for dimensions).
  • Industrial Automation: Hands-On > Occupations and Trades
    Mounting techniques include riveting, drilling, tapping, and cutting or punching holes in the metal enclosure to mount rectangular components.
  • Creating a three dimensional holographic movie
    The process involves two rectangular , 30.5 cm long, metal pieces being pressed together to punch the holes in the film.
  • Environmental aspects of photodegradable plastics
    One of the most successful examples is the Hi-Conem beverage carrier, a rectangular sheet of polyethylene (ca. 0.4 mm thick) into which are punched six holes the size of conventional metal beverage containers.
  • Dictionary of Civil Engineering
    A tool mounted on a machine known as a punching machine, allowing to obtain a hole carved in a blade of metal by shearing of material according to a circular, oblong, square, or rectangular contour, corresponding at the dimension of the punch…
  • McGraw-Hill Machining and Metalworking Handbook, Third Edition > Sheet Metal Practices and Layout
    The sheet metal blank is punched , one hole at a time, on a strippit punch press. .... quickly for punching different sizes or shapes of holes, such as round, square, rectangular , oval, or obround…
  • Analysis of bending effects in sheet forming operations
    S. C. Tang, ‘Large elasto-plastic strain analysis of flanged hole forming’, Comp. Struct., 13, 363-370 .... T. B. Stoughton, ‘Finite element modeling of 1008 AK sheet steel stretched over a rectangular punch with bending effects’,in N.-M. Wang and S. C. Tang (eds.), Computer Modeling of Sheet Metal Forming Process, AIME, 1985. ii..
  • An examination of Maya metallurgy, 1150 to 1544 A.D.
    A hole with ragged edges has been punched through both blades. .... The two circular blades are joined by a rectangular piece of metal , folded over to form a hinge.
  • Early punched card equipment: 1880-1951 [Scanning Our Past]
    Rectan- gular holes were more easily read as cards passed over a metallic roller under metal brushes that made elec- trical contact when the hole passed between the brush and the roller. .... This design required the development of new punches and readers, but (unlike Peirce’s approach) the coding of…
  • Infrared scanning of failure processes in wood
    Although the actual configuration of metal connector plates vanes widely among manufacturers, the plates generally consist ofgalvanized sheet steel of 14 to 20 gage with teeth of 1/4 to 3/4 in. (6.4 to 19.0 mm) punched in a regular pattern .... The long side of the punched rectangular holes defines the major axis of the plate.