US3820387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Probe system for ultrasonic nondestructive testing
Assignee: Krautkramer Branson Inc
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Filing: 1973-04-11
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Granted: 1974-06-28
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Expires: 1993-04-11
Abstract
Abstract A pulse-echo ultrasonic test system comprises an array of probes disposed along the surface of a test specimen. The array is divided into groups, each group comprising a plurality of probes. A control circuit sequentially renders each group of probes operative in a predetermined sequence to cover the exposed length of the specimen. Certain adjacent probes are rendered operative during the time interval in which two adjacent but different groups are rendered operative to provide an overlap, while other probes are rendered operative only once during a complete cycle in which all of the groups are rendered operative.
Inventors
- 👤 W Grabendorfer
- 👤 M Gregor
- 👤 U Schlengermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:58
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/26; G01N29/262; G01N29/04; G01N29/06; G01N29/34; G01N29/341; G01N2291/00; G01N2291/04; G01N2291/044; G01N2291/10; G01N2291/106
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
157 words
A probe system for ultrasonic nondestructive testing by the pulse-echo test method comprising: a plurality of probes disposed in a linear array on the surface of a specimen to be tested, each probe adapted to transmit ultrasonic pulse energy into the specimen and to subsequently receive an echo signal therefrom, such echo signal being indicative of an acoustic discontinuity intercepted by the energy transmitted from a respective probe; control means coupled to said probes for energizing during a first time interval simultaneously a first group of juxtaposed probes, such group comprising a portion of said plurality, and for energizing during a subsequent second time interval simultaneously a second but similar group of juxtaposed probes whereby one of said probes is common to said first group and to said second group to provide overlapping test zones and, means coupled to said probes and operative responsive to the energizing of said probes for indicating acoustic discontinuities in the workpiece.
Claim 2
Dependent Claim
157 words
A probe system for ultrasonic nondestructive testing by the pulse-echo test method comprising: a plurality of probes disposed in a linear array on the surface of a specimen to be tested, each probe adapted to transmit ultrasonic pulse energy into the specimen and to subsequently receive an echo signal therefrom, such echo signal being indicative of an acoustic discontinuity intercepted by the energy transmitted from a respective probe; control means coupled to said probes for energizing during a first time interval simultaneously a first group of juxtaposed probes, such group comprising a portion of said plurality, and for energizing during a subsequent second time interval simultaneously a second but similar group of juxtaposed probes whereby one of said probes is common to said first group and to said second group to provide overlapping test zones and, means coupled to said probes and operative responsive to the energizing of said probes for indicating acoustic discontinuities in the workpiece.
Claim 3
Dependent Claim
47 words
A probe system as set forth in claim 1, each group comprising at least three probes causing one probe to be energized during said first and during said second interval and causing at least one probe of each group to be energized only once during said intervals.
Claim 4
Dependent Claim
19 words
A probe system as set forth in claim 1, each of said groups having an equal quantity of probes.
Claim 5
Dependent Claim
47 words
A probe system as set forth in claim 1, said plurality of probes being divided into at least three groups, the thrid group of probes being energized during a subsequent third time interval, and one of said probes is common to said second and said third group.
Claim 6
Dependent Claim
23 words
A probe system as set forth in claim 1 and including a plurality of pulse generating means, one coupled to each respective probe.
Claim 7
Independent Claim
111 words
The method of testing a workpiece by the pulse-echo ultrasonic test method comprising the steps: disposing a plurality of juxtaposed ultrasonic probes forming an array in ultrasonic energy transmitting contact with the surface of the workpiece, rendering operative for transmitting and receiving ultrasonic signals sequentially a respective group of juxtaposed probes selected from said plurality, the probes belonging to a respective group being rendered operative substantially siMultaneously, and controlling the operation of said groups to cause during one entire cycle of operation in which all of the respective groups are rendered operative in sequence a progressively advancing overlapping sound pressure pattern across the surface portion of the workpiece opposite said array.
Claim 8
Independent Claim
111 words
The method of testing a workpiece by the pulse-echo ultrasonic test method comprising the steps: disposing a plurality of juxtaposed ultrasonic probes forming an array in ultrasonic energy transmitting contact with the surface of the workpiece, rendering operative for transmitting and receiving ultrasonic signals sequentially a respective group of juxtaposed probes selected from said plurality, the probes belonging to a respective group being rendered operative substantially siMultaneously, and controlling the operation of said groups to cause during one entire cycle of operation in which all of the respective groups are rendered operative in sequence a progressively advancing overlapping sound pressure pattern across the surface portion of the workpiece opposite said array.
Claim 9
Dependent Claim
54 words
The method as set forth in claim 6, said sequencing being arranged to cause said overlapping pattern to be the result of rendering operative twice during said one cycle the probe disposed at the end position of a respective group and juxtaposed with the probe belonging to a group of probes rendered operative subsequently.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |