Methods for ultrasonic inspection of spot and seam resistance welds in metallic sheets and a spot weld examination probe system (SWEPS)
US6948369B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2005 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Jan 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2675
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An external focused ultrasonic beam, non-destructive, open-air, inspection method of sheet metal spot and seam weldments using a probe in combination with motion measurement of the probe over the weldments during inspection without immersion of the material. Reflected ultrasonic waves are received and signals produced and processed or displayed as A-scan, B-scan and C-scan images that are easily recognized. An A-Scan is based on the time-of-flight difference between the outer surface, the weldment and inner and opposite surfaces of the component. B-scan and C-scan indicate the degree of weld fusion and provide data relative to fused thickness and defects sheet metal or welds. A special purpose scanner that enables ultrasonic examination welds. Scanner is pencil like ultrasonic probe with bearing face and position sensing device disposed adjacent a weld position. Scanner collects data for method to determine various characteristics of welded items.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.