Feasibility Study of an Automatic Photoelectric Detection System for Inspection of 'Magnafluxed' M46 Steel Bodies.
Abstract
ETECTION, *Photodectors, Cracks, Automatic, Steel, Magnetic materials, Particles, Feasibility studies, Fluorescence, AutomationMagnetic particle inspectionThe objective of the program was to automate and speed up the existing 'magna-glow' detection by replacing the human observer with a high speed photosensor system. Fundamentally, each item is presented to the inspection device in some manner after having been routinely magna-glowed. An optical system collects the light from the item, rejects the ultraviolet components, and a photodetector recognizes the characteristic yellow phosphor adhering to the cracks and surface discontinuities. By expanding the signal to background ratio, optimizing the field of view and using pulse discriminating electronics it was possible to correlate the photocells output signal with the magnitude of the surface discontinuity. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1973
- Accession Number
- AD0770508
Entities
People
- Edward G. Kessler
- Paul Kisatsky
Organizations
- Picatinny Arsenal