Ultrasonic array sensor, ultrasonic inspection instrument and ultrasonic inspection method
US6957583B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2003 |
| Grant date | Oct 25, 2005 |
| Priority date | — |
| Expiry date | Nov 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/044
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ultrasonic inspection instrument for detecting a crack and performing sizing in the depth direction of the crack. By a transmitter element array and a receiver element array included in a common sensor, focus points between focused acoustic fields are electronically scanned in a range including a location where half the sum of the transmitting angle of ultrasonic waves to an inspection-target material and the receiving angle of diffraction echoes from the inspection-target material is 30 degrees, so that a tip portion of the crack is detected from the received diffraction echoes. Thus, the detectability of the ultrasonic inspection instrument for detecting diffraction waves in a subject to be inspected and performing crack inspection is stabilized and kept high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.