Pulse-echo method by means of an array-type probe and temperature compensation
US8770027B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2009 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jan 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/326
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a nondestructive ultrasonic test method in which at least one ultrasonic pulse is emitted into a workpiece under test by at least one ultrasonic transmitter (3), the ultrasonic pulse is reflected on boundary surfaces within the workpiece, the reflected ultrasound is received by at least one ultrasonic receiver (2), and the associated signals are evaluated, the ultrasound penetrating a damping block (4) that is arranged between the workpiece and the transmitter or receiver. The method is characterized in that it includes at least one step for determining at least one dimension (alpha, d1, d2) of the damping block (4) that is relevant for the ultrasonic test; in said step, the propagation time of at least one ultrasonic pulse which is generated by the ultrasonic transmitter (3), is reflected on a boundary surface (5) of the damping block (4), and is received by the ultrasonic receiver (2) is measured, and at least one dimension (alpha, d1, d2) of the damping block (4) that is relevant for the ultrasonic test is determined from the measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.