Plasma-Spray Coating Thickness Monitoring System.
Abstract
The Plasma-Spray Coating Thickness Monitoring System incorporates a unique optical transform technique that enables an image of a coupon (part) surface to be projected on a one-dimensional linear diode array (LDA). Parts to be coated with plasma spray are mounted on a carousel, and a probe containing the optics and LDA is attached to one side. The system measures the height of the coupon surface, thus providing a way to determine the thickness of the ceramic coating. The optical pattern impressed on the diode array is converted to an accurate representation of coating thickness by a small microprocessor-based control and readout console mounted adjacent to the equipment operator.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1981
- Accession Number
- ADA132385