GB819925A - Improvements in or relating to methods of detecting surface discontinuities in articles - Google Patents
Improvements in or relating to methods of detecting surface discontinuities in articlesInfo
- Publication number
- GB819925A GB819925A GB2483456A GB2483456A GB819925A GB 819925 A GB819925 A GB 819925A GB 2483456 A GB2483456 A GB 2483456A GB 2483456 A GB2483456 A GB 2483456A GB 819925 A GB819925 A GB 819925A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- ultra
- penetrant
- penetrants
- water
- 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
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
819,925. Detecting surface flaws. SWITZER BROS. Inc. July 9, 1957 [Aug. 14, 1956], No. 24834/56. Class 106 (2). [Also in Group XL (a)] A method of testing the surface of an article for the presence of a surface discontinuity comprises forming on the surface of the article an adherent film of a liquid penetrant containing a colouring matter susceptible to fading on exposure to ultra-violet light, exposing the surface to ultra-violet light for sufficient time to substantially destroy any colour in the penetrant on the surface, but not in that lodged in a surface discontinuity and then inspecting the surface in a light which will render contrastingly visible any colouring matter remaining in a surface discontinuity. Suitable penetrants are stated to include kerosene, mineral spirits and light fuel oils. Less suitable penetrants include benzene, toluene, xylene, methyl ethyl ketone, isophorine, butyl acetate, amyl acetate and acids such as acrylic acid. Some of these latter are soluble in water and care must be taken, if a water wash is used to remove excess penetrant before leaving the films, not to use too vigorous a wash. Suitable dyes include that sold under the Registered Trade Mark " Fluorol 5GA," perylene and celliton brilliant yellow FFA, all of which fluoresce and are soluble in the above mentioned penetrants. The mixture may be applied in any suitable way, either to leave a thin film or else to leave an excess of liquid which may be removed by wiping or hosing with water. The inspection may be made under ultra-violet light, or a developer such as french talc may be applied to the surface which is then inspected under visible light.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2483456A GB819925A (en) | 1956-08-14 | 1956-08-14 | Improvements in or relating to methods of detecting surface discontinuities in articles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2483456A GB819925A (en) | 1956-08-14 | 1956-08-14 | Improvements in or relating to methods of detecting surface discontinuities in articles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB819925A true GB819925A (en) | 1959-09-09 |
Family
ID=10217965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2483456A Expired GB819925A (en) | 1956-08-14 | 1956-08-14 | Improvements in or relating to methods of detecting surface discontinuities in articles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB819925A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4522742A (en) * | 1982-02-25 | 1985-06-11 | E. I. Du Pont De Nemours And Company Inc. | Water soluble fluor compositions |
EP2623963A1 (en) * | 2012-01-19 | 2013-08-07 | MTU Aero Engines GmbH | Method for non-destructive testing of workpiece surfaces |
DE102013213369B3 (en) * | 2013-07-09 | 2014-10-23 | MTU Aero Engines AG | Non-destructive testing of workpiece surfaces |
DE102016201221A1 (en) * | 2016-01-28 | 2017-08-03 | MTU Aero Engines AG | Non-destructive testing of workpiece surfaces |
CN110376212A (en) * | 2019-08-20 | 2019-10-25 | 华能国际电力股份有限公司 | Online in-situ fluorescence permeation detection device for key components of gas turbine |
CN112654756A (en) * | 2018-09-04 | 2021-04-13 | Sika技术股份公司 | Adhesive composition and use thereof for achieving leak detection in fully adhered roof systems |
-
1956
- 1956-08-14 GB GB2483456A patent/GB819925A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4522742A (en) * | 1982-02-25 | 1985-06-11 | E. I. Du Pont De Nemours And Company Inc. | Water soluble fluor compositions |
EP2623963A1 (en) * | 2012-01-19 | 2013-08-07 | MTU Aero Engines GmbH | Method for non-destructive testing of workpiece surfaces |
US8901515B2 (en) | 2012-01-19 | 2014-12-02 | Mtu Aero Engines Gmbh | Method for nondestructive testing of workpiece surfaces |
DE102013213369B3 (en) * | 2013-07-09 | 2014-10-23 | MTU Aero Engines AG | Non-destructive testing of workpiece surfaces |
EP2824447A3 (en) * | 2013-07-09 | 2015-04-01 | MTU Aero Engines GmbH | Method for non-destructive testing of workpiece surfaces |
US9535012B2 (en) | 2013-07-09 | 2017-01-03 | MTU Aero Engines AG | Method for the non-destructive testing of workpiece surfaces |
DE102016201221A1 (en) * | 2016-01-28 | 2017-08-03 | MTU Aero Engines AG | Non-destructive testing of workpiece surfaces |
CN112654756A (en) * | 2018-09-04 | 2021-04-13 | Sika技术股份公司 | Adhesive composition and use thereof for achieving leak detection in fully adhered roof systems |
CN110376212A (en) * | 2019-08-20 | 2019-10-25 | 华能国际电力股份有限公司 | Online in-situ fluorescence permeation detection device for key components of gas turbine |
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