GB1421686A - Flaw detection - Google Patents

Flaw detection

Info

Publication number
GB1421686A
GB1421686A GB2792574A GB2792574A GB1421686A GB 1421686 A GB1421686 A GB 1421686A GB 2792574 A GB2792574 A GB 2792574A GB 2792574 A GB2792574 A GB 2792574A GB 1421686 A GB1421686 A GB 1421686A
Authority
GB
United Kingdom
Prior art keywords
workpiece
particles
coating
june
flaws
Prior art date
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
GB2792574A
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.)
Magnaflux Corp
Original Assignee
Magnaflux 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.)
Filing date
Publication date
Application filed by Magnaflux Corp filed Critical Magnaflux Corp
Publication of GB1421686A publication Critical patent/GB1421686A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

1421686 Detecting flaws in surfaces MAGNAFLUX CORP 24 June 1974 [22 June 1973] 27925/74 Heading G1S A method of detecting flaws in the external surface of a hollow workpiece W, Fig. 4, comprises coating particles 34 such as spheres of glass, vitreous or plastics material or cork, the smallest of which are too large to enter into the hollows 33 of the workpiece, with an amount of liquid penetrant insufficient to cause free flowing of the penetrant coating from such particles. Surface contact and relative movement between the coated particles and the workpiece is then brought about so as to transfer a coating to the external surface to give an indication of flaws therein when the workpiece is viewed under normal or fluorescent light. In Figs. 1 to 3 (not shown) turbine blades are held in a skeleton framework (23) within a rotary drum assembly (10) and are coated by tumbling particles, but the coating could be carried out by other means using vibrating tubs, oscillating conveyers, or a cascading arrangement.
GB2792574A 1973-06-22 1974-06-24 Flaw detection Expired GB1421686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00372659A US3845658A (en) 1973-06-22 1973-06-22 Method of detecting flaws in the exterior surfaces of hollow workpieces

Publications (1)

Publication Number Publication Date
GB1421686A true GB1421686A (en) 1976-01-21

Family

ID=23469126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2792574A Expired GB1421686A (en) 1973-06-22 1974-06-24 Flaw detection

Country Status (3)

Country Link
US (1) US3845658A (en)
GB (1) GB1421686A (en)
IT (1) IT1015299B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273671A (en) * 1979-09-18 1981-06-16 The United States Of America As Represented By The Secretary Of The Air Force Fluorescent detection of flaws
US4281033A (en) * 1980-03-12 1981-07-28 Magnaflux Corporation Fluorescent penetrant system
US4661369A (en) * 1985-09-05 1987-04-28 The United States Of America As Represented By The Secretary Of The Air Force Non-destructive evaluation method for coated carbon-carbon composites
CN101710079B (en) * 2009-12-10 2011-06-01 贵州电力试验研究院 Decision method for testing in-service water turbine runner crackle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US662516A (en) * 1900-05-09 1900-11-27 Hermann H Barklage Process of filling interstices of cob pipes.
US1350458A (en) * 1916-09-11 1920-08-24 Hokanson Martin Shovel-testing machine
US1629858A (en) * 1921-10-07 1927-05-24 Wood Shovel And Tool Company Method and apparatus for testing shovels
US2554723A (en) * 1949-08-06 1951-05-29 Isthmian Metals Inc Lubricating powder pressed compact
US2788297A (en) * 1951-11-15 1957-04-09 Myron A Coler Process of impact coating solid insulators with transparent conductive coatings
US2817603A (en) * 1953-03-04 1957-12-24 Myron A Coler Method of producing electrically conductive article
US3162040A (en) * 1960-05-28 1964-12-22 Cahen Max Methods and devices for examining the flatiness or the exactly concentric cylinder-shape of a plane or cylindric surface, e. g. the active surface of printing-forms and/or of the supporting member thereof
US3425950A (en) * 1965-04-01 1969-02-04 North American Rockwell Dye penetrant

Also Published As

Publication number Publication date
US3845658A (en) 1974-11-05
IT1015299B (en) 1977-05-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee