JPH0411821B2 - - Google Patents

Info

Publication number
JPH0411821B2
JPH0411821B2 JP58029845A JP2984583A JPH0411821B2 JP H0411821 B2 JPH0411821 B2 JP H0411821B2 JP 58029845 A JP58029845 A JP 58029845A JP 2984583 A JP2984583 A JP 2984583A JP H0411821 B2 JPH0411821 B2 JP H0411821B2
Authority
JP
Japan
Prior art keywords
circuit
signal
cutting
metal material
level
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 - Lifetime
Application number
JP58029845A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59154346A (ja
Inventor
Kenichi Matsui
Tatsuo Hiroshima
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP2984583A priority Critical patent/JPS59154346A/ja
Publication of JPS59154346A publication Critical patent/JPS59154346A/ja
Publication of JPH0411821B2 publication Critical patent/JPH0411821B2/ja
Granted 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)
JP2984583A 1983-02-23 1983-02-23 金属材の欠陥検査装置 Granted JPS59154346A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2984583A JPS59154346A (ja) 1983-02-23 1983-02-23 金属材の欠陥検査装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2984583A JPS59154346A (ja) 1983-02-23 1983-02-23 金属材の欠陥検査装置

Publications (2)

Publication Number Publication Date
JPS59154346A JPS59154346A (ja) 1984-09-03
JPH0411821B2 true JPH0411821B2 (OSRAM) 1992-03-02

Family

ID=12287328

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2984583A Granted JPS59154346A (ja) 1983-02-23 1983-02-23 金属材の欠陥検査装置

Country Status (1)

Country Link
JP (1) JPS59154346A (OSRAM)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2509115B2 (ja) * 1991-09-26 1996-06-19 新日本製鐵株式会社 鋼片の表面欠陥検出方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5419798A (en) * 1977-07-14 1979-02-14 Ishikawajima Harima Heavy Ind Crack detecting method

Also Published As

Publication number Publication date
JPS59154346A (ja) 1984-09-03

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