A prototype dual mode corrosion monitor is described which is capable of measuring both instantaneous corrosion rate and cumulative corrosion loss in atmospheric environments not boldly exposed to weather. The monitor system consists of two components: a small flat sensor to be located in the area to be monitored and a battery powered electronics unit to query the sensor. The sensor element is made of steel which is far more sensitive to atmospheric corrosion than most commonly used metals; thus the sensor will react before significant damage has been done to other materials. The sensor itself is actually two discrete sensors on the same substrate and photo-etched from the same foil.
NASA STI/Recon Technical Report N
- Pub Date:
- February 1989
- Atmospheric Effects;
- Corrosion Tests;
- Instrumentation and Photography