Electronic Signal Processing Techniques. Phase 3. Nondestructive Testing
Abstract
Correlation techniques were used to improve the signal to noise ratio in the ultrasonic inspection of a simulated weld seam. A quarter inch titanium plate, containing EDM slots and drill holes, was inspected ultrasonically. The inspection was performed as if the plate contained a weld seam with potential flaws. The limiting background noise was due to surface roughness and grain boundary scattering. The weld line was inspected three times, a different transducer configuration being used for each inspection. The three sets of data were multiplied together. The signal to noise ratio for the ultrasonic reflection from a ten (10) mil drill hole was improved from a value of one to one to a value of five to one. The development of automatic scanning procedures appears possible.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1971
- Accession Number
- AD0727156
Entities
People
- James C. Kennedy
- Wayne E. Woodmansee
Organizations
- Boeing