Method and apparatus for ultrasonic testing of defects
US4669312A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1985 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Apr 30, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2634
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The object of the invention is a method for the non-destructive testing of workpieces (14) or components with ultrasonics and a device for applying the method. The workpieces (14) are subjected in accordance with the through-transmission principle at the same locations (38) in succession with ultrasonic waves that differ by their opposing directions under conditions that are otherwise the same. The ultrasonic signals received in the two different sound directions are, provided they have different signal amplitudes, compared with given values obtained from a similar workpiece with defects in previously known depth in order to determine the depth of defect in the workpiece (14). If the sound absorption is complete, the ultrasonic waves continue to be applied in opposite directions to neighboring positions until ultrasonic signals are received whose differences are evaluated in order to determine the depth of the defect concerned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.