US5042305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic flaw detecting system
Assignee: Hitachi Construction Machinery Co Ltd
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Filing: 1989-07-26
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Granted: 1991-08-27
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Expires: 2009-07-26
Abstract
Abstract According to the present invention, a cursor is displayed on a screen of display of an ultrasonic image obtained by scanning the surface of an inspection object by use of a probe formed by arrangement of array elements and, further, the cursor is moved to a desired position of the ultrasonic image so that ultrasonic waves are emitted to a position of the surface of the object corresponding to the aforementioned position and the reflection wave signals are displayed in another display portion. Accordingly, not only ultrasonic flaw detection (C-scope) in a plane of the object can be conducted, but also ultrasonic flaw detection (B-scope) in the direction of depth in a desired position of the object can be conducted simultaneously. Consequently, detailed flaw information, such as a flaw type, a flaw position, a flaw size and a flaw shape, in the object can be detected quickly.
Inventors
- 👤 Yoshihiko Takishita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:49
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/52; G01S7/52017; G01S7/52053; G01S7/52057; G01S7/52074; G01N; G01N29/00; G01N29/04; G01N29/06; G01N29/0609; G01N29/0618; G01N29/0627; G01N29/0645; G01N29/44; G01N29/4454; G01S7/52073
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
235 words
An ultrasonic flaw detecting system comprising: an array probe constituted by a large number of array elements arranged in a direction of a first axis for serving transmission and reception of ultrasonic waves; switching means for switching said array elements so as to successively select a predetermined number of ones of said array elements on the basis of a clock signal; moving means for moving said array probe in a direction of a second axis orthogonal to said first axis; delay control means provided for both transmission and reception of ultrasonic waves for the double purpose of converging ultrasonic waves at a predetermined point and receiving reflection waves from said point; a display portion for displaying an ultrasonic image in a plane formed by said first and second axes on the basis of signals received by said array elements; cursor display means for displaying a cursor in said display portion; computing means for computing the amount of movement of said cursor; clock signal output control means for generating said clock signal having a number of pulses corresponding to the amount of movement of said cursor in said first axial direction; driving means for driving said moving means corresponding to the amount of movement of said cursor in the second axial direction; and a second display portion for displaying an ultrasonic image in a direction of a third axis orthogonal to said first and second axes.
Claim 2
Dependent Claim
235 words
An ultrasonic flaw detecting system comprising: an array probe constituted by a large number of array elements arranged in a direction of a first axis for serving transmission and reception of ultrasonic waves; switching means for switching said array elements so as to successively select a predetermined number of ones of said array elements on the basis of a clock signal; moving means for moving said array probe in a direction of a second axis orthogonal to said first axis; delay control means provided for both transmission and reception of ultrasonic waves for the double purpose of converging ultrasonic waves at a predetermined point and receiving reflection waves from said point; a display portion for displaying an ultrasonic image in a plane formed by said first and second axes on the basis of signals received by said array elements; cursor display means for displaying a cursor in said display portion; computing means for computing the amount of movement of said cursor; clock signal output control means for generating said clock signal having a number of pulses corresponding to the amount of movement of said cursor in said first axial direction; driving means for driving said moving means corresponding to the amount of movement of said cursor in the second axial direction; and a second display portion for displaying an ultrasonic image in a direction of a third axis orthogonal to said first and second axes.
Claim 3
Dependent Claim
248 words
An ultrasonic flaw detecting system comprising: an array probe constituted by a large number of array elements arranged in a direction of a first axis for serving transmission and reception of ultrasonic waves; switching means for switching said array elements so as to successively select a predetermined number of ones of said array elements on the basis of a clock signal; moving means for moving said array probe in a direction of a second axis orthogonal to said first axis; delay control means provided for both transmission and reception of ultrasonic waves for the double purpose of converging ultrasonic waves at a predetermined point and receiving reflection waves from said point; a display portion for displaying an ultrasonic image in a plane formed by said first and second axes on the basis of signals received by said array elements; cursor display means for displaying a cursor in said display portion; computing means for computing the amount of movement of said cursor; clock signal output control means for generating said clock signal having a number of pulses corresponding to the amount of movement of said cursor in said first axial direction; driving means for driving said moving means corresponding to the amount of movement of said cursor in the second axial direction; and a second display portion for displaying an ultrasonic image in a direction of a third axis orthogonal to said first and second axes, so that said system is capable of simultaneously conducting plan-image display (B-scope display).
Claim 4
Dependent Claim
248 words
An ultrasonic flaw detecting system comprising: an array probe constituted by a large number of array elements arranged in a direction of a first axis for serving transmission and reception of ultrasonic waves; switching means for switching said array elements so as to successively select a predetermined number of ones of said array elements on the basis of a clock signal; moving means for moving said array probe in a direction of a second axis orthogonal to said first axis; delay control means provided for both transmission and reception of ultrasonic waves for the double purpose of converging ultrasonic waves at a predetermined point and receiving reflection waves from said point; a display portion for displaying an ultrasonic image in a plane formed by said first and second axes on the basis of signals received by said array elements; cursor display means for displaying a cursor in said display portion; computing means for computing the amount of movement of said cursor; clock signal output control means for generating said clock signal having a number of pulses corresponding to the amount of movement of said cursor in said first axial direction; driving means for driving said moving means corresponding to the amount of movement of said cursor in the second axial direction; and a second display portion for displaying an ultrasonic image in a direction of a third axis orthogonal to said first and second axes, so that said system is capable of simultaneously conducting plan-image display (B-scope display).
Claim 5
Dependent Claim
50 words
An ultrasonic flaw detecting system according to claim 2, in which said plane-image display includes a switching circuit for switching reception waves from said array probe, a detection circuit for detecting the signal thus selected by said switching circuit, and a frame memory for storing the thus detected signal therein.
Claim 6
Dependent Claim
52 words
An ultrasonic flaw detecting system according to claim 2, in which said sectional-image display includes a switching circuit for switching reception waves from said array probe, a gate circuit for getting the signal thus selected by said switching circuit, and a frame memory for storing the output of said gate circuit therein.
Claim 7
Dependent Claim
256 words
An ultrasonic flaw detecting system comprising: an array probe constituted by a large number of array elements arranged both in a direction of a first axis and in a direction of a second axis orthogonal thereto for serving transmission and reception of ultrasonic waves; switching means for switching said array elements so as to successively select a predetermined number of ones of said array elements on the basis of a clock signal; delay control means provided for both transmission and reception of ultrasonic waves for the double purpose of converging ultrasonic waves at a predetermined point and receiving reflection waves from said point; a display portion for displaying an ultrasonic image in a plane formed by said first and second axes on the basis of signals received by said array elements; cursor display means for displaying a cursor in said display portion; computing means for computing the amounts of movement of said cursor in said first and second axial direction; clock signal output control means for generating said clock signal having a number of pulses corresponding to the amount of movement of said cursor in said first axial direction and for generating said clock signal having a number of pulses corresponding to the amount of movement of said cursor in said second axial direction; and a second display portion for displaying an ultrasonic image in a direction of a third axis orthogonal to said first and second axes, so that said system is capable of simultaneously conducting plane-image display (C-scope display) and sectional-image display (B-scope display).
Claim 8
Dependent Claim
256 words
An ultrasonic flaw detecting system comprising: an array probe constituted by a large number of array elements arranged both in a direction of a first axis and in a direction of a second axis orthogonal thereto for serving transmission and reception of ultrasonic waves; switching means for switching said array elements so as to successively select a predetermined number of ones of said array elements on the basis of a clock signal; delay control means provided for both transmission and reception of ultrasonic waves for the double purpose of converging ultrasonic waves at a predetermined point and receiving reflection waves from said point; a display portion for displaying an ultrasonic image in a plane formed by said first and second axes on the basis of signals received by said array elements; cursor display means for displaying a cursor in said display portion; computing means for computing the amounts of movement of said cursor in said first and second axial direction; clock signal output control means for generating said clock signal having a number of pulses corresponding to the amount of movement of said cursor in said first axial direction and for generating said clock signal having a number of pulses corresponding to the amount of movement of said cursor in said second axial direction; and a second display portion for displaying an ultrasonic image in a direction of a third axis orthogonal to said first and second axes, so that said system is capable of simultaneously conducting plane-image display (C-scope display) and sectional-image display (B-scope display).
Claim 9
Dependent Claim
50 words
An ultrasonic flaw detecting system according to Claim 5, in which said plane-image display includes a switching circuit for switching reception waves from said array probe, a detection circuit for detecting the signal thus selected by said switching circuit, and a frame memory for storing the thus detected signal therein.
Claim 10
Dependent Claim
52 words
An ultrasonic flaw detecting system according to Claim 5, in which said sectional-image display includes a switching circuit for switching reception waves from said array probe, a gate circuit for gating the signal thus selected by said switching circuit, and a frame memory for storing the output of said gate circuit therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-26 | 1995-02-25 | 1995-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-26 | 1999-02-25 | 1999-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-26 | 2003-02-25 | 2003-08-27 | $7700.00 | Window Closed / Lapsed |