GB2015749A - Process for detecting flaws in workpieces - Google Patents

Process for detecting flaws in workpieces

Info

Publication number
GB2015749A
GB2015749A GB7903540A GB7903540A GB2015749A GB 2015749 A GB2015749 A GB 2015749A GB 7903540 A GB7903540 A GB 7903540A GB 7903540 A GB7903540 A GB 7903540A GB 2015749 A GB2015749 A GB 2015749A
Authority
GB
United Kingdom
Prior art keywords
workpieces
detecting flaws
solvent
coloured liquid
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.)
Withdrawn
Application number
GB7903540A
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen 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.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of GB2015749A publication Critical patent/GB2015749A/en
Withdrawn legal-status Critical Current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)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The present invention provides a process for detecting flaws which extend to the surface of workpieces, in daylight by applying a thin layer of a coloured liquid comprising a dyestuff, a binder and a solvent, using a solvent of low evaporation number, the application of the coloured liquid being carried out as the sole step of the process.
GB7903540A 1978-02-04 1979-02-01 Process for detecting flaws in workpieces Withdrawn GB2015749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782804829 DE2804829C2 (en) 1978-02-04 1978-02-04 Process for the determination of imperfections reaching up to the surface of workpieces

Publications (1)

Publication Number Publication Date
GB2015749A true GB2015749A (en) 1979-09-12

Family

ID=6031182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7903540A Withdrawn GB2015749A (en) 1978-02-04 1979-02-01 Process for detecting flaws in workpieces

Country Status (3)

Country Link
DE (1) DE2804829C2 (en)
FR (1) FR2416464A1 (en)
GB (1) GB2015749A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006120389A1 (en) * 2005-05-07 2006-11-16 Sheffield Hallam University Fluorescent probe for the detection of corrosion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006120389A1 (en) * 2005-05-07 2006-11-16 Sheffield Hallam University Fluorescent probe for the detection of corrosion

Also Published As

Publication number Publication date
DE2804829B1 (en) 1979-07-19
FR2416464A1 (en) 1979-08-31
DE2804829C2 (en) 1980-03-27

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)