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JPS57192840A - Display method for crack type image - Google Patents

Display method for crack type image

Info

Publication number
JPS57192840A
JPS57192840A JP7756181A JP7756181A JPS57192840A JP S57192840 A JPS57192840 A JP S57192840A JP 7756181 A JP7756181 A JP 7756181A JP 7756181 A JP7756181 A JP 7756181A JP S57192840 A JPS57192840 A JP S57192840A
Authority
JP
Japan
Prior art keywords
crack
signal
type image
detected
image
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.)
Granted
Application number
JP7756181A
Other languages
Japanese (ja)
Other versions
JPS6131809B2 (en
Inventor
Mitsuhisa Miyazawa
Hideaki Yanai
Seiichiro Satomura
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.)
Akashi Seisakusho KK
Original Assignee
Akashi Seisakusho KK
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 Akashi Seisakusho KK filed Critical Akashi Seisakusho KK
Priority to JP7756181A priority Critical patent/JPS57192840A/en
Publication of JPS57192840A publication Critical patent/JPS57192840A/en
Publication of JPS6131809B2 publication Critical patent/JPS6131809B2/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
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/06—Special adaptations of indicating or recording means

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)
  • Indicating Measured Values (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

PURPOSE:To enable the continuous, automatic, and accurate display of a crack type image at a high reliability, by a method wherein, following extension of a crack in a sample, a type image of a rack corresponding to an original image of the crack is elongated for display. CONSTITUTION:An image signal of a sample 4, having a crack 3, is inputted at a range of a picture 3 from an ITV1, and after it is binary-coded (A), a crack signal is detected (B) to supply it to a crack end finder C, in case a crack signal at the end exceeding a given value is detected, a measuring allowable zone is elongated, and in case the crack signal being below a given value is detected, the measuring allowable zone is contracted. The detecting signals are supplied as a crack type image signal to an adding circuit R by a generator D. A binary code signal from a circuit A is inputted as a marker to an adding circuit R via a switch S1, and an addition output follows extension of a crack by means of a CRT37, and is displayed as an elongating picture of a crack type image corresponding to an original image of a crack.
JP7756181A 1981-05-22 1981-05-22 Display method for crack type image Granted JPS57192840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7756181A JPS57192840A (en) 1981-05-22 1981-05-22 Display method for crack type image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7756181A JPS57192840A (en) 1981-05-22 1981-05-22 Display method for crack type image

Publications (2)

Publication Number Publication Date
JPS57192840A true JPS57192840A (en) 1982-11-27
JPS6131809B2 JPS6131809B2 (en) 1986-07-23

Family

ID=13637421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7756181A Granted JPS57192840A (en) 1981-05-22 1981-05-22 Display method for crack type image

Country Status (1)

Country Link
JP (1) JPS57192840A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004410A1 (en) * 1985-01-25 1986-07-31 Nippon Kokan Kabushiki Kaisha Apparatus for detecting positions of crack caused by fatigue
JPS63214642A (en) * 1987-03-02 1988-09-07 Shirou Hagishita Cracking progress tracking device for crack testing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004410A1 (en) * 1985-01-25 1986-07-31 Nippon Kokan Kabushiki Kaisha Apparatus for detecting positions of crack caused by fatigue
JPS63214642A (en) * 1987-03-02 1988-09-07 Shirou Hagishita Cracking progress tracking device for crack testing device

Also Published As

Publication number Publication date
JPS6131809B2 (en) 1986-07-23

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