JPS5740646A - Processing method for continuous signal for surface inspection of cylindrical object - Google Patents

Processing method for continuous signal for surface inspection of cylindrical object

Info

Publication number
JPS5740646A
JPS5740646A JP11673880A JP11673880A JPS5740646A JP S5740646 A JPS5740646 A JP S5740646A JP 11673880 A JP11673880 A JP 11673880A JP 11673880 A JP11673880 A JP 11673880A JP S5740646 A JPS5740646 A JP S5740646A
Authority
JP
Japan
Prior art keywords
signal
axis direction
recording
continuous signal
defect
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.)
Pending
Application number
JP11673880A
Other languages
Japanese (ja)
Inventor
Masahito Nagaya
Takashi Ueno
Yuzuru Takahashi
Kazuyoshi Miyazawa
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
Nippon 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP11673880A priority Critical patent/JPS5740646A/en
Publication of JPS5740646A publication Critical patent/JPS5740646A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9073—Recording measured data
    • G01N27/908—Recording measured data synchronously with scanning

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

PURPOSE:To perform easily a signal analysis of a higher level, by inspecting spirally the surface of a cylindrical object and recording the obtained continuous signal with the positions being corresponded on a development plan on the surface of the object to be inspected. CONSTITUTION:A travelling amount in the axial direction of a defect detecting element 2 is synchronized with feed 15 in the x axis direction of a recording paper 20, further an angle 6 of rotation between a roll 1 and the defect detecting element 2 is synchronized with a movement 16 of a signal recording part in the y axis direction perpendicular to the x axis direction, thereby an inspection signal along the y direction is drawn. The inspection signal for length of one circumference of the roll 1 is recorded between 0 deg. and 360 deg. in the y axis direction of the recording paper 20, and the starting point of recording is returned successively for every one circumference to be recorded. The judgement of the kind, distribution and magnitude of defect parts and others become easy and a defect analysis of a higher level can be performed from the continuous signal on a development plan obtained in this way.
JP11673880A 1980-08-25 1980-08-25 Processing method for continuous signal for surface inspection of cylindrical object Pending JPS5740646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11673880A JPS5740646A (en) 1980-08-25 1980-08-25 Processing method for continuous signal for surface inspection of cylindrical object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11673880A JPS5740646A (en) 1980-08-25 1980-08-25 Processing method for continuous signal for surface inspection of cylindrical object

Publications (1)

Publication Number Publication Date
JPS5740646A true JPS5740646A (en) 1982-03-06

Family

ID=14694559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11673880A Pending JPS5740646A (en) 1980-08-25 1980-08-25 Processing method for continuous signal for surface inspection of cylindrical object

Country Status (1)

Country Link
JP (1) JPS5740646A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63279185A (en) * 1987-04-16 1988-11-16 シーメンス、アクチエンゲゼルシヤフト Method of detecting inherent stress of part
CN103868928A (en) * 2014-03-17 2014-06-18 吉林大学 Full-automatic guide rod surface quality detecting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63279185A (en) * 1987-04-16 1988-11-16 シーメンス、アクチエンゲゼルシヤフト Method of detecting inherent stress of part
CN103868928A (en) * 2014-03-17 2014-06-18 吉林大学 Full-automatic guide rod surface quality detecting device

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