AU8071791A - Illumination system for high speed surface inspection of rolled aluminum sheet - Google Patents

Illumination system for high speed surface inspection of rolled aluminum sheet

Info

Publication number
AU8071791A
AU8071791A AU80717/91A AU8071791A AU8071791A AU 8071791 A AU8071791 A AU 8071791A AU 80717/91 A AU80717/91 A AU 80717/91A AU 8071791 A AU8071791 A AU 8071791A AU 8071791 A AU8071791 A AU 8071791A
Authority
AU
Australia
Prior art keywords
high speed
illumination system
aluminum sheet
surface inspection
rolled aluminum
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.)
Abandoned
Application number
AU80717/91A
Inventor
Matthew Fairlie
Warren Fraser
Otto Meijer
David Smith
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.)
Rio Tinto Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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 Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Publication of AU8071791A publication Critical patent/AU8071791A/en
Abandoned 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
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details
    • G01N21/8903—Optical details; Scanning details using a multiple detector array
    • 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
    • G01N21/8806—Specially adapted optical and illumination features
    • G01N2021/8809—Adjustment for highlighting flaws
    • 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
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8854—Grading and classifying of flaws
    • G01N2021/8867—Grading and classifying of flaws using sequentially two or more inspection runs, e.g. coarse and fine, or detecting then analysing
    • G01N2021/887—Grading and classifying of flaws using sequentially two or more inspection runs, e.g. coarse and fine, or detecting then analysing the measurements made in two or more directions, angles, positions
    • 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
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details
    • G01N2021/8908—Strip illuminator, e.g. light tube
    • 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
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • G01N2021/8918—Metal

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • 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)
AU80717/91A 1990-06-22 1991-06-20 Illumination system for high speed surface inspection of rolled aluminum sheet Abandoned AU8071791A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54320290A 1990-06-22 1990-06-22
US543202 1995-10-13

Publications (1)

Publication Number Publication Date
AU8071791A true AU8071791A (en) 1992-01-23

Family

ID=24167009

Family Applications (1)

Application Number Title Priority Date Filing Date
AU80717/91A Abandoned AU8071791A (en) 1990-06-22 1991-06-20 Illumination system for high speed surface inspection of rolled aluminum sheet

Country Status (2)

Country Link
AU (1) AU8071791A (en)
WO (1) WO1992000517A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917588A (en) * 1996-11-04 1999-06-29 Kla-Tencor Corporation Automated specimen inspection system for and method of distinguishing features or anomalies under either bright field or dark field illumination
EP0893686A1 (en) * 1997-07-25 1999-01-27 Hoogovens Technical Services Iron & Steel BV System for inspecting the lower face of a moving strip
EP0898163B1 (en) * 1997-08-22 2000-11-08 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Method and apparatus for automatic inspection of moving surfaces
US6327374B1 (en) 1999-02-18 2001-12-04 Thermo Radiometrie Oy Arrangement and method for inspection of surface quality
DE19946520B4 (en) * 1999-09-28 2010-09-16 Parsytec Ag Apparatus and method for surface inspection of a continuously tapered strip material
DE10139717A1 (en) 2001-08-13 2003-02-27 Giesecke & Devrient Gmbh Method and device for examining defects in or on sheet material
DE102013108722B4 (en) * 2013-08-12 2022-10-06 Thyssenkrupp Steel Europe Ag Method and device for detecting defects of a flat surface
JP6213662B2 (en) * 2014-03-07 2017-10-18 新日鐵住金株式会社 Surface texture indexing device, surface texture indexing method and program
GB2526866A (en) * 2014-06-05 2015-12-09 Univ Bristol Apparatus for and method of inspecting surface topography of a moving object
US11169095B2 (en) * 2016-05-30 2021-11-09 Bobst Mex Sa Surface inspection system and method using multiple light sources and a camera offset therefrom
DE102017209062B4 (en) * 2017-05-30 2020-07-30 Thyssenkrupp Ag Detection of dry defects on oiled steel strips using UV light

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB894570A (en) * 1959-07-15 1962-04-26 British Iron Steel Research Improvements in or relating to the detection of surface abnormalities
GB1362047A (en) * 1971-12-08 1974-07-30 Nippon Kokan Kk Method and apparatus for detecting surface defects of moving bodies
JPS5614935A (en) * 1979-07-19 1981-02-13 Nippon Steel Corp Surface defect detecting method
JPS6238348A (en) * 1985-08-14 1987-02-19 Mitsubishi Metal Corp Optical inspecting method for surface defect
JPH0682103B2 (en) * 1987-10-27 1994-10-19 松下電工株式会社 Visual inspection system for copper-clad wiring boards
US4954891A (en) * 1988-07-11 1990-09-04 Process Automation Business, Inc. Light guided illuminating/sectioning device for sheet inspection system

Also Published As

Publication number Publication date
WO1992000517A1 (en) 1992-01-09

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