비의류제품

laser interferometric measurement of ion electrode shape and charge exchange erosion

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 520
a projected fringe profilometry system was applied to surface contour measurements of an accelerator electrode from an ion thrustor. the system permitted noncontact, nondestructive evaluation of the fine and gross structure of the electrode. a 3-d surface map of a dished electrode was generated without altering the electrode surface. the same system was used to examine charge exchange erosion pits near the periphery of the electrode to determine the depth, location, and volume of material lost. this electro-optical measurement system allowed rapid, nondestructive, digital data acquisition coupled with automated computer data processing. in addition, variable sensitivity allowed both coarse and fine measurements of objects having various surface finishes
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