GB1445151A – Apparatus for determining the wall thickness of specimens such as plates or the like by ultrasonic methods
– Google Patents
GB1445151A – Apparatus for determining the wall thickness of specimens such as plates or the like by ultrasonic methods
– Google Patents
Apparatus for determining the wall thickness of specimens such as plates or the like by ultrasonic methods
Info
Publication number
GB1445151A
GB1445151A
GB4028173A
GB4028173A
GB1445151A
GB 1445151 A
GB1445151 A
GB 1445151A
GB 4028173 A
GB4028173 A
GB 4028173A
GB 4028173 A
GB4028173 A
GB 4028173A
GB 1445151 A
GB1445151 A
GB 1445151A
Authority
GB
United Kingdom
Prior art keywords
wavetrain
determining
specimen
received
count
Prior art date
1972-08-29
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
GB4028173A
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.)
Krautkraemer GmbH
Original Assignee
Krautkraemer GmbH
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.)
1972-08-29
Filing date
1973-08-24
Publication date
1976-08-04
1973-08-24
Application filed by Krautkraemer GmbH
filed
Critical
Krautkraemer GmbH
1976-08-04
Publication of GB1445151A
publication
Critical
patent/GB1445151A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G01—MEASURING; TESTING
G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
G01S15/06—Systems determining the position data of a target
G01S15/08—Systems for measuring distance only
G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
G01S15/14—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves wherein a voltage or current pulse is initiated and terminated in accordance respectively with the pulse transmission and echo reception
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
G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
Abstract
1445151 Ultrasonic thickness gauge KRAUTKRAMER GmbH 24 Aug 1973 [29 Aug 1972] 40281/73 Heading H4D In a system for measuring the wall thickness of a specimen, by transmitting an acoustic pulse into the specimen to excite a wall resonance and determining the oscillation frequency of a time-gated portion of the resulting wavetrain received from the specimen, a clocked counter is arranged to count upwards from an initial value for the duration of the transmission pulse and is switched to count downwards when the leading edge of the wavetrain is received. When the initial count value is reached, a delay period (a selected number of oscillation cycles of the receiver signal) elapses before a frequency counter for determining the oscillation frequency is switched on. The required time-gate thus includes a substantially pure (decaying) sinusoidal portion of the wavetrain. A gated portion of the wavetrain is also fed back to the transmitter to re-excite the wall resonance (a noise generator having been used for the initial excitation). The apparatus is adjusted to give maximum deflection on a received signal amplitude monitor.
GB4028173A
1972-08-29
1973-08-24
Apparatus for determining the wall thickness of specimens such as plates or the like by ultrasonic methods
Expired
GB1445151A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE19722242466
DE2242466C3
(en)
1972-08-29
1972-08-29
Switching device for determining the wall thickness of measurement objects such as plates or the like. according to the ultrasonic method
Publications (1)
Publication Number
Publication Date
GB1445151A
true
GB1445151A
(en)
1976-08-04
Family
ID=5854895
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4028173A
Expired
GB1445151A
(en)
1972-08-29
1973-08-24
Apparatus for determining the wall thickness of specimens such as plates or the like by ultrasonic methods
Country Status (4)
Country
Link
JP
(1)
JPS4965855A
(en)
DE
(1)
DE2242466C3
(en)
FR
(1)
FR2198153B1
(en)
GB
(1)
GB1445151A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2143036A
(en)
*
1983-07-08
1985-01-30
Atomic Energy Authority Uk
Ultrasonic resonance for detecting changes in elastic properties
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB8334394D0
(en)
*
1983-12-23
1984-02-01
Czajowski S B
Electrical circuits
1972
1972-08-29
DE
DE19722242466
patent/DE2242466C3/en
not_active
Expired
1973
1973-08-24
GB
GB4028173A
patent/GB1445151A/en
not_active
Expired
1973-08-29
FR
FR7331233A
patent/FR2198153B1/fr
not_active
Expired
1973-08-29
JP
JP9710173A
patent/JPS4965855A/ja
active
Pending
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2143036A
(en)
*
1983-07-08
1985-01-30
Atomic Energy Authority Uk
Ultrasonic resonance for detecting changes in elastic properties
Also Published As
Publication number
Publication date
DE2242466C3
(en)
1981-01-08
FR2198153A1
(en)
1974-03-29
DE2242466A1
(en)
1974-03-07
FR2198153B1
(en)
1978-01-06
DE2242466B2
(en)
1980-05-14
JPS4965855A
(en)
1974-06-26
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Legal Events
Date
Code
Title
Description
1976-12-15
PS
Patent sealed
1981-04-01
PCNP
Patent ceased through non-payment of renewal fee
