An abrading system for the measurement of oxide thickness
Abstract
A device for the measurement of oxide or other coating thicknesses is described. The device was designed primarily for the remote measurement of oxide thickness inside a shutdown nuclear reactor. The oxide is removed over a region 1 mm in diameter by an air jet containing a controlled amount of abrasive powder. A high precision linear displacement transducer is used to measure the oxide thickness at this position. The technique is suitable for thickness in the range 10 to 2500 micron. An accuracy of + or - 5 micron is attainable.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- January 1979
- Bibcode:
- 1979STIN...8011411W
- Keywords:
-
- Film Thickness;
- Measuring Instruments;
- Metal Surfaces;
- Oxide Films;
- Abrasion;
- Electronic Transducers;
- Inspection;
- Nuclear Reactors;
- Patent Policy;
- Instrumentation and Photography