GB1341005A – Method of and apparatus for testing a workpiece for disconformities of dimensions or shape
– Google Patents
GB1341005A – Method of and apparatus for testing a workpiece for disconformities of dimensions or shape
– Google Patents
Method of and apparatus for testing a workpiece for disconformities of dimensions or shape
Info
Publication number
GB1341005A
GB1341005A
GB1341005DA
GB1341005A
GB 1341005 A
GB1341005 A
GB 1341005A
GB 1341005D A
GB1341005D A
GB 1341005DA
GB 1341005 A
GB1341005 A
GB 1341005A
Authority
GB
United Kingdom
Prior art keywords
strip
stream
pulse
echo
disconformities
Prior art date
1969-12-17
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Steel Corp
Original Assignee
British Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1969-12-17
Filing date
1970-12-17
Publication date
1973-12-19
1970-12-17
Application filed by British Steel Corp
filed
Critical
British Steel Corp
1973-12-19
Publication of GB1341005A
publication
Critical
patent/GB1341005A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G01—MEASURING; TESTING
G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
G01B17/06—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring contours or curvatures
Abstract
1341005 Measuring strip material BRITISH STEEL CORP 17 Dec 1970 [17 Dec 1969] 61544/69 Heading G1M [Also in Divisions B2 H4] Disconformities of the dimensions or shape of a workpiece are detected by directing a stream of liquid on to a surface of the workpiece, transmitting ultrasonic energy along the stream and utilizing the energy reflected back from the surface through the stream to provide an indication of any such disconformities. In an embodiment for detecting buckling of hot or cold metal strip issuing from a rolling mill the strip profile is sensed by pulse-echo measurement of the distances between the strip surface and several test heads arranged above or below the strip at points spaced across the strip width. Each test head comprises Fig. 2 a Piezo-electric transmit/receive transducer 7 in a housing 6 into which water is fed at 9 as that it passes via apertures 17 into tube 15 and emerges from nozzle 10. Laminar flow is induced by a member 19 having bores 20, and is maintained by annular flange groove 21 which produces a toroidal air motion around a stream at the nozzle exit. Each test head is connected to a respective signal processing channel in which a bi-stable is set just before the expected arrival of the echo pulse, is reset by the echo pulse, and the reset pulse is displayed on an oscilloscope common to all channels and whose time-base sawtooth sweep is synchronized with the acoustic pulse transmission. The sawtooth amplitude is also sampled at the echo arrival instant and the sampled values for the different channels are recorded and may be used for automatic control of the rolling operation or strip feed rate. A single test head scanned across the width of the strip may be used instead of the several heads.
GB1341005D
1969-12-17
1970-12-17
Method of and apparatus for testing a workpiece for disconformities of dimensions or shape
Expired
GB1341005A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB6154469
1969-12-17
Publications (1)
Publication Number
Publication Date
GB1341005A
true
GB1341005A
(en)
1973-12-19
Family
ID=10487155
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1341005D
Expired
GB1341005A
(en)
1969-12-17
1970-12-17
Method of and apparatus for testing a workpiece for disconformities of dimensions or shape
Country Status (6)
Country
Link
BE
(1)
BE760419A
(en)
CA
(1)
CA964361A
(en)
DE
(1)
DE2062049A1
(en)
FR
(1)
FR2073917A5
(en)
GB
(1)
GB1341005A
(en)
NL
(1)
NL7018454A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2194051A
(en)
*
1986-08-15
1988-02-24
British Aerospace
Ultrasonic non-destructive testing apparatus
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE3621819C2
(en)
*
1986-06-28
1995-05-18
Mpv Mes Und Prueftechnik Vogt
Method and device for measuring airborne sound
DE19922058A1
(en)
*
1999-05-14
2000-11-23
Fraunhofer Ges Forschung
Examination and testing of e.g. lengthy rock anchors and bridge sections, employs transducers to excite them with specific ultrasound modes, digitizing reflected wave to locate and characterize e.g. fissures or corrosion damage
1970
1970-12-16
CA
CA100,782A
patent/CA964361A/en
not_active
Expired
1970-12-16
BE
BE760419A
patent/BE760419A/en
unknown
1970-12-16
DE
DE19702062049
patent/DE2062049A1/en
active
Pending
1970-12-17
GB
GB1341005D
patent/GB1341005A/en
not_active
Expired
1970-12-17
NL
NL7018454A
patent/NL7018454A/xx
unknown
1970-12-17
FR
FR7045552A
patent/FR2073917A5/fr
not_active
Expired
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2194051A
(en)
*
1986-08-15
1988-02-24
British Aerospace
Ultrasonic non-destructive testing apparatus
GB2194051B
(en)
*
1986-08-15
1991-04-24
British Aerospace
Ultrasonic non-destructive testing apparatus
Also Published As
Publication number
Publication date
BE760419A
(en)
1971-05-27
FR2073917A5
(en)
1971-10-01
CA964361A
(en)
1975-03-11
DE2062049A1
(en)
1971-06-24
NL7018454A
(en)
1971-06-21
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Legal Events
Date
Code
Title
Description
1974-05-01
PS
Patent sealed
1974-05-22
PLE
Entries relating assignments, transmissions, licences in the register of patents
1977-07-13
PLNP
Patent lapsed through nonpayment of renewal fees
