testex - como funciona

  • Replica tape consists of a layer of compressible foam affixed to an incompressible polyester substrate.
  • When pressed against a roughened (steel) surface, the foam collapses.
  • Acquiring an impression of the surface.
  • Placing the compressed tape between the anvils of a micrometric thickness gage, and subtracting the contribution of the incompressible substrate (50 micrometers or 0.002 inches), gives a measure of the surface profile.