EP0353633A2
Expired / Lapsed
EP
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Supersonic flaw detecting system
Assignee: Hitachi Construction Machinery Co Ltd
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Filing: 1989-07-27
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Granted: —
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Expires: 2009-07-27
Abstract
Abstract According to the present invention, a cursor (41) is displayed on a screen of display of a supersonic 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 (41) is moved to a desired position of the supersonic image in a first display portion (40) so that supersonic waves are emitted to a position of the surface of the object (3) corresponding to the aforementioned position and the reflection wave signals are displayed in another display portion (42). Accordingly, not only supersonic flaw detection (C-scope) in a plane of the object can be conducted, but also supersonic 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
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:23
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: 6
Claim 1
Independent Claim
257 words
A supersonic flaw detecting system comprising: an array probe (10) constituted by a large number of array elements arranged in a direction of a first axis (X) for serving transmission and reception of supersonic waves; switching means (24) 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 (Y) orthogonal to said first axis; delay control means (22, 27) provided both in the transmission side and in the reception side for the double purpose of converging supersonic waves at a predetermined point and receiving reflection waves from said point; a display portion (21, 21′) for displaying a supersonic image in a plane formed by said first and second axes on the basis of signals received by said array elements; characterized by cursor display means (20) for displaying a cursor in said display portion (21, 21′); computing means (20a, 20a′) 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 (X); driving means (8M, 8E) for driving said moving means corresponding to the amount of movement of said cursor in the second axial direction; and a second display portion (31) for displaying a supersonic image in a direction of a third axis (Z) orthogonal to said first and second axes.
Claim 2
Dependent Claim
257 words
A supersonic flaw detecting system comprising: an array probe (10) constituted by a large number of array elements arranged in a direction of a first axis (X) for serving transmission and reception of supersonic waves; switching means (24) 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 (Y) orthogonal to said first axis; delay control means (22, 27) provided both in the transmission side and in the reception side for the double purpose of converging supersonic waves at a predetermined point and receiving reflection waves from said point; a display portion (21, 21′) for displaying a supersonic image in a plane formed by said first and second axes on the basis of signals received by said array elements; characterized by cursor display means (20) for displaying a cursor in said display portion (21, 21′); computing means (20a, 20a′) 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 (X); driving means (8M, 8E) for driving said moving means corresponding to the amount of movement of said cursor in the second axial direction; and a second display portion (31) for displaying a supersonic image in a direction of a third axis (Z) orthogonal to said first and second axes.
Claim 3
Dependent Claim
35 words
A supersonic flaw detecting system according to claim 1, wherein said second display portion (31) is adapted, so that said system is capable of simultaneously conducting plane-image display (C-scope display) and sectional-image display (B-scope display).
Claim 4
Dependent Claim
54 words
A supersonic flaw detecting system according to Claim 2, in which said plane-image display includes a switching circuit (35) for switching reception waves from said array probe (10), a detection circuit (38) for detecting the signal thus selected by said switching circuit, and a frame memory (36) for storing the thus detected signal therein.
Claim 5
Dependent Claim
56 words
A supersonic flaw detecting system according to Claim 2, in which said sectional-image display includes a switching circuit (35) for switching reception waves from said array probe (10), a gate circuit (50) for gating the signal thus selected by said switching circuit, and a frame memory (36) for storing the output of said gate circuit therein.
Claim 6
Dependent Claim
47 words
A supersonic flaw detecting system according to onc of the preceding claims 2 to 4, wherein said clock signal output control means further generates said clock signal having a number of pulses corresponding to the amount of movement of said cursor in said second axial direction (Y).
References Cited (Backward Citations)
No citation records indexed.
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