GB1402495A – Method for measuring and evaluating ultrasonic test pulses
– Google Patents
GB1402495A – Method for measuring and evaluating ultrasonic test pulses
– Google Patents
Method for measuring and evaluating ultrasonic test pulses
Info
Publication number
GB1402495A
GB1402495A
GB2446473A
GB2446473A
GB1402495A
GB 1402495 A
GB1402495 A
GB 1402495A
GB 2446473 A
GB2446473 A
GB 2446473A
GB 2446473 A
GB2446473 A
GB 2446473A
GB 1402495 A
GB1402495 A
GB 1402495A
Authority
GB
United Kingdom
Prior art keywords
defect
amplitudes
echo
time
measured
Prior art date
1972-05-30
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
GB2446473A
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.)
Thyssen Niederrhein AG
Original Assignee
Thyssen Niederrhein AG
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.)
1972-05-30
Filing date
1973-05-22
Publication date
1975-08-06
1973-05-22
Application filed by Thyssen Niederrhein AG
filed
Critical
Thyssen Niederrhein AG
1975-08-06
Publication of GB1402495A
publication
Critical
patent/GB1402495A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G01—MEASURING; TESTING
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
G01N29/04—Analysing solids
G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
Abstract
1402495 Ultrasonic testing of materials THYSSEN NIEDERRHEIN AG HUTTEN. UND WALZWERKE 22 May 1973 [30 May 1972] 24464/73 Heading H4D In a method for processing ultrasonic test pulses using a plurality of transducer probes and wherein time gates are produced for the defect and bottom echoes, taking into account the time for the pulses to pass through the probe and a coupling medium, the defect and test sample bottom echo amplitudes being measured and their ratio taken, the amplitudes are corrected for depth, the path lengths of the probes and coupling medium being individually and successively determined and the ratio of the defect and bottom echo amplitudes being determined by obtaining their amplitudes logarithmically and then subtracting. In Fig. 3, the governing equipment provides all the necessary timing pulses for the transmitter and processing circuitry. In the gate control, the time gates, one enframing the expected time for defect echo arrival and one enframing that for bottom echo arrival, are generated. The time for the injected pulse to travel through the probe and coupling medium is gated out. In the echo level measurement section, the amplitudes of the defect and bottom echoes are measured. The depth of the defect is measured in the travel time measurement unit and from this measurement a compensation value is derived from the depth characteristic curve. In this way, the true defect size is obtained from the echo amplitude which has been compensated for its dependence on depth. Additionally, the bottom echo amplitude is compensated from a knowledge of the test sample thickness. The amplitudes are measured logarithmically, subtracted and the answer compensated. The resulting value is discriminated by a threshold detector before being passed as a detected defect to a computer or recording device. Detailed circuitry of the various units is given.
GB2446473A
1972-05-30
1973-05-22
Method for measuring and evaluating ultrasonic test pulses
Expired
GB1402495A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE19722226172
DE2226172C3
(en)
1972-05-30
1972-05-30
Process for measuring and evaluating ultrasonic test pulses with a selected pulse repetition frequency for the ultrasonic testing of metal sheets and similar test objects using the pulse-echo method
Publications (1)
Publication Number
Publication Date
GB1402495A
true
GB1402495A
(en)
1975-08-06
Family
ID=5846251
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2446473A
Expired
GB1402495A
(en)
1972-05-30
1973-05-22
Method for measuring and evaluating ultrasonic test pulses
Country Status (8)
Country
Link
BE
(1)
BE800155A
(en)
DE
(1)
DE2226172C3
(en)
FR
(1)
FR2187124A5
(en)
GB
(1)
GB1402495A
(en)
IE
(1)
IE37685B1
(en)
IT
(1)
IT1012055B
(en)
LU
(1)
LU67598A1
(en)
NL
(1)
NL156241B
(en)
Cited By (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2124378A
(en)
*
1982-07-23
1984-02-15
Krautkraemer Gmbh
Non-destructive ultrasonic testing
GB2136569A
(en)
*
1983-03-05
1984-09-19
Robert Joseph Savage
Testing of structures
US4829824A
(en)
*
1985-11-02
1989-05-16
Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V.
Method for digital peak value measurement for ultrasonic test pulses
US6250160B1
(en)
1993-09-28
2001-06-26
Defelsko Corporation
High resolution ultrasonic thickness gauge
WO2004055508A1
(en)
*
2002-12-17
2004-07-01
Agfa Ndt Gmbh
Method and device for determining the size of a fracture in a workpiece by means of the ultrasound pulse method
Families Citing this family (14)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2422439C2
(en)
*
1974-05-09
1983-12-08
Krautkrämer GmbH, 5000 Köln
Method for adjusting the flaw aperture in an ultrasonic testing process
DE2620590C3
(en)
*
1976-05-10
1981-11-12
Krautkrämer, GmbH, 5000 Köln
Procedure for setting orifices during the automated test piece thickness measurement and / or non-destructive material testing with ultrasound
DE2623522C2
(en)
*
1976-05-26
1983-12-22
Krautkrämer GmbH, 5000 Köln
Procedure for non-destructive material testing with ultrasound
DE2623892B2
(en)
*
1976-05-28
1980-05-14
Karl Deutsch Pruef- Und Messgeraetebau, 5600 Wuppertal
Process for evaluating ultrasonic signals in ultrasonic testing devices for non-destructive testing of materials
DE2636401C3
(en)
*
1976-08-11
1983-11-03
Mannesmann AG, 4000 Düsseldorf
Procedure for the automatic detection of ultrasonic indications
DE2846153C2
(en)
*
1978-10-24
1985-03-21
Krautkrämer GmbH, 5000 Köln
Procedure for determining the size of the replacement reflector in automatic ultrasonic testing
DE2939617C2
(en)
*
1979-09-29
1986-02-06
Edotronik Gesellschaft für Elektronik-Systeme mbH & Co Optoelektronik KG, 8000 München
Device for fast and distortion-free conversion of the analog ultrasonic test signals generated by a detector into digital signals
JPS5698650A
(en)
*
1980-01-11
1981-08-08
Hitachi Ltd
Ultrasonic-signal processing device
EP0038055A3
(en)
*
1980-04-16
1982-08-18
Georg Fischer Aktiengesellschaft
Ultrasonic test method
DE3139570C2
(en)
*
1981-10-05
1983-09-29
Krautkrämer GmbH, 5000 Köln
Method and circuit device for determining and displaying maximum values of the ultrasonic signals reflected by reflectors in a test piece
DE3421176A1
(en)
*
1984-06-07
1985-12-19
Sartorius GmbH, 3400 Göttingen
Device for the acoustic detection of gas bubbles in liquids such as blood or infusion solutions
DE3436498C2
(en)
*
1984-10-05
1994-08-25
Truetzschler Gmbh & Co Kg
Device for the detection of foreign bodies, such as metal parts, in textile fiber bales
DE3538948C1
(en)
*
1985-11-02
1987-04-23
Deutsche Forsch Luft Raumfahrt
Method for digitally measuring the peak value of ultrasonic test pulses
DE102015100098B4
(en)
*
2015-01-07
2017-03-02
Bundesrepublik Deutschland, Vertreten Durch Den Bundesminister Für Wirtschaft Und Energie, Dieser Vertreten Durch Den Präsidenten Der Bundesanstalt Für Materialforschung Und -Prüfung (Bam)
Ultrasonic testing with reduced memory requirements and increased signal bandwidth
1972
1972-05-30
DE
DE19722226172
patent/DE2226172C3/en
not_active
Expired
1973
1973-05-14
LU
LU67598D
patent/LU67598A1/xx
unknown
1973-05-21
FR
FR7318338A
patent/FR2187124A5/fr
not_active
Expired
1973-05-22
GB
GB2446473A
patent/GB1402495A/en
not_active
Expired
1973-05-24
IE
IE83573A
patent/IE37685B1/en
unknown
1973-05-29
BE
BE2052804A
patent/BE800155A/en
not_active
IP Right Cessation
1973-05-30
IT
IT2483573A
patent/IT1012055B/en
active
1973-05-30
NL
NL7307604A
patent/NL156241B/en
not_active
IP Right Cessation
Cited By (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2124378A
(en)
*
1982-07-23
1984-02-15
Krautkraemer Gmbh
Non-destructive ultrasonic testing
GB2136569A
(en)
*
1983-03-05
1984-09-19
Robert Joseph Savage
Testing of structures
US4829824A
(en)
*
1985-11-02
1989-05-16
Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V.
Method for digital peak value measurement for ultrasonic test pulses
US6250160B1
(en)
1993-09-28
2001-06-26
Defelsko Corporation
High resolution ultrasonic thickness gauge
US6282962B1
(en)
1993-09-28
2001-09-04
Defelsko Corporation
High resolution ultrasonic thickness gauge
WO2004055508A1
(en)
*
2002-12-17
2004-07-01
Agfa Ndt Gmbh
Method and device for determining the size of a fracture in a workpiece by means of the ultrasound pulse method
US7240554B2
(en)
2002-12-17
2007-07-10
Ge Inspection Technologies Systems Gmbh
Method and device for sizing a crack in a workpiece using the ultrasonic pulse-echo technique
Also Published As
Publication number
Publication date
FR2187124A5
(en)
1974-01-11
DE2226172A1
(en)
1973-12-13
DE2226172C3
(en)
1975-12-04
BE800155A
(en)
1973-09-17
NL7307604A
(en)
1973-12-04
NL156241B
(en)
1978-03-15
LU67598A1
(en)
1973-07-24
IT1012055B
(en)
1977-03-10
IE37685L
(en)
1973-11-30
IE37685B1
(en)
1977-09-14
DE2226172B2
(en)
1975-04-24
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Legal Events
Date
Code
Title
Description
1975-12-17
PS
Patent sealed
1986-05-14
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1988-07-20
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1991-01-16
PCNP
Patent ceased through non-payment of renewal fee
