GB974671A - Improvements in or relating to an electronic surface inspection system - Google Patents

Improvements in or relating to an electronic surface inspection system

Info

Publication number
GB974671A
GB974671A GB3779761A GB3779761A GB974671A GB 974671 A GB974671 A GB 974671A GB 3779761 A GB3779761 A GB 3779761A GB 3779761 A GB3779761 A GB 3779761A GB 974671 A GB974671 A GB 974671A
Authority
GB
United Kingdom
Prior art keywords
scan
defect
pulse
relating
conveyer
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
GB3779761A
Inventor
John Francis Laycak
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.)
Jones and Laughlin Steel Corp
Original Assignee
Jones and Laughlin Steel 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 Jones and Laughlin Steel Corp filed Critical Jones and Laughlin Steel Corp
Publication of GB974671A publication Critical patent/GB974671A/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
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles

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)

Abstract

974,671. Counters. JONES & LAUGHLIN STEEL CORPORATION. Oct. 20, 1961, No. 37797/61. Drawings to Specification. Heading G4D. The surface condition of a material is estimated by scanning the material photo-electrically as it travels along a conveyer. Each scan produces a long pulse. Each defect produces a pulse proportional to the width of the defect. Differentiation, rectification and gating results in the elimination of all signals other than a pulse at the detection of each defect in a scan. Such pulses are counted for a predetermined length of material to give an indication of the quality of that length. A printer is operated and the counter is reset. The speed of scan and the speed of the conveyer can be related. U. S. A. Specifications 2,999,944, 3,020,033 and 3,020,034 are referred to.
GB3779761A 1961-11-16 1961-10-20 Improvements in or relating to an electronic surface inspection system Expired GB974671A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU40827 1961-11-16
DEJ0020884 1961-11-24

Publications (1)

Publication Number Publication Date
GB974671A true GB974671A (en) 1964-11-11

Family

ID=25982330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3779761A Expired GB974671A (en) 1961-11-16 1961-10-20 Improvements in or relating to an electronic surface inspection system

Country Status (3)

Country Link
DE (1) DE1423992A1 (en)
GB (1) GB974671A (en)
LU (1) LU40827A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT379684B (en) * 1984-01-11 1986-02-10 Voest Alpine Ag METHOD FOR SURFACE TESTING OF STEEL STRINGS AND DEVICE FOR IMPLEMENTING THE METHOD

Also Published As

Publication number Publication date
DE1423992A1 (en) 1969-01-23
LU40827A1 (en) 1962-01-16

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