GB1132989A – Magnetographic process
– Google Patents
GB1132989A – Magnetographic process
– Google Patents
Magnetographic process
Info
Publication number
GB1132989A
GB1132989A
GB52118/65A
GB5211865A
GB1132989A
GB 1132989 A
GB1132989 A
GB 1132989A
GB 52118/65 A
GB52118/65 A
GB 52118/65A
GB 5211865 A
GB5211865 A
GB 5211865A
GB 1132989 A
GB1132989 A
GB 1132989A
Authority
GB
United Kingdom
Prior art keywords
tape
fault
stl
sts
dec
Prior art date
1964-12-08
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
GB52118/65A
Inventor
Joachim Greiner
Friedrich Krones
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert 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.)
1964-12-08
Filing date
1965-12-08
Publication date
1968-11-06
1965-12-08
Application filed by Agfa Gevaert AG
filed
Critical
Agfa Gevaert AG
1968-11-06
Publication of GB1132989A
publication
Critical
patent/GB1132989A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
239000002245
particle
Substances
0.000
abstract
2
241001479434
Agfa
Species
0.000
abstract
1
230000005415
magnetization
Effects
0.000
abstract
1
238000009738
saturating
Methods
0.000
abstract
1
Classifications
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
G03G5/16—Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing
G—PHYSICS
G01—MEASURING; TESTING
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
Abstract
1,132,989. Testing with magnetic tapes. AGFA GEVAERT A.G. 8 Dec., 1965 [8 Dec., 1964], No. 52118/65. Heading G5R. [Also in Division H1] A magnetic tape 5, preferably one made as described in Division H1, in which the magnetic layer 4 consists of acicular particles of CrO 2 aligned along the direction 13, is laid on a testpiece 1 along which a field Hf is exerted. At a fault 3, the fringe field is recorded in the tape. The vertical components H StS relate to the fault 3, while the horizontal components H StL may be partly due to the fault but are mainly due to direct magnetization by the test field Hp. While this is much greater than H StS , the orientation of the particles in the tape prevents the component H StL from saturating the tape. The tape is then spliced into a loop and played back on a tape recorder at audio playback speed. The fault 3 is then adjudged orally by loud-speaker or measured with a valve voltmeter or other measuring instrument.
GB52118/65A
1964-12-08
1965-12-08
Magnetographic process
Expired
GB1132989A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DEA47812A
DE1258146B
(en)
1964-12-08
1964-12-08
Magnetography process for the non-destructive testing of materials
Publications (1)
Publication Number
Publication Date
GB1132989A
true
GB1132989A
(en)
1968-11-06
Family
ID=6936006
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB52118/65A
Expired
GB1132989A
(en)
1964-12-08
1965-12-08
Magnetographic process
Country Status (7)
Country
Link
US
(1)
US3435336A
(en)
BE
(1)
BE673412A
(en)
CH
(1)
CH444525A
(en)
DE
(1)
DE1258146B
(en)
FR
(1)
FR1457167A
(en)
GB
(1)
GB1132989A
(en)
NL
(1)
NL6515807A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2119518A
(en)
*
1982-03-24
1983-11-16
George Victor Crowe
Flaw detection method
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2764733A
(en)
*
1952-05-03
1956-09-25
Magnaflux Corp
Method and means for detecting flaws
US3221315A
(en)
*
1962-06-25
1965-11-30
Ncr Co
Magnetic recording medium utilizing microscopic capsules containing magnetic material
1964
1964-12-08
DE
DEA47812A
patent/DE1258146B/en
not_active
Ceased
1965
1965-12-03
US
US511889A
patent/US3435336A/en
not_active
Expired – Lifetime
1965-12-06
NL
NL6515807A
patent/NL6515807A/xx
unknown
1965-12-08
BE
BE673412D
patent/BE673412A/xx
unknown
1965-12-08
GB
GB52118/65A
patent/GB1132989A/en
not_active
Expired
1965-12-08
FR
FR41434A
patent/FR1457167A/en
not_active
Expired
1965-12-08
CH
CH1691565A
patent/CH444525A/en
unknown
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2119518A
(en)
*
1982-03-24
1983-11-16
George Victor Crowe
Flaw detection method
Also Published As
Publication number
Publication date
US3435336A
(en)
1969-03-25
NL6515807A
(en)
1966-04-25
BE673412A
(en)
1966-06-08
CH444525A
(en)
1967-09-30
DE1258146B
(en)
1968-01-04
FR1457167A
(en)
1966-10-28
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None