JPS56125646A - Fissure size detecting method - Google Patents

Fissure size detecting method

Info

Publication number
JPS56125646A
JPS56125646A JP2794380A JP2794380A JPS56125646A JP S56125646 A JPS56125646 A JP S56125646A JP 2794380 A JP2794380 A JP 2794380A JP 2794380 A JP2794380 A JP 2794380A JP S56125646 A JPS56125646 A JP S56125646A
Authority
JP
Japan
Prior art keywords
fissure
signals
measured
defect
repetitive stresses
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
JP2794380A
Other languages
English (en)
Inventor
Kunio Enomoto
Tasuku Shimizu
Yoshio Fukuda
Tsutomu Masumoto
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2794380A priority Critical patent/JPS56125646A/ja
Publication of JPS56125646A publication Critical patent/JPS56125646A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02854—Length, thickness

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (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 Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
JP2794380A 1980-03-07 1980-03-07 Fissure size detecting method Pending JPS56125646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2794380A JPS56125646A (en) 1980-03-07 1980-03-07 Fissure size detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2794380A JPS56125646A (en) 1980-03-07 1980-03-07 Fissure size detecting method

Publications (1)

Publication Number Publication Date
JPS56125646A true JPS56125646A (en) 1981-10-02

Family

ID=12234965

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2794380A Pending JPS56125646A (en) 1980-03-07 1980-03-07 Fissure size detecting method

Country Status (1)

Country Link
JP (1) JPS56125646A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6008761A (en) * 1996-06-17 1999-12-28 Nec Corporation Loop antenna
JP2013088262A (ja) * 2011-10-17 2013-05-13 National Institute For Materials Science 極低温超音波疲労非破壊試験評価装置及び解析・評価方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6008761A (en) * 1996-06-17 1999-12-28 Nec Corporation Loop antenna
JP2013088262A (ja) * 2011-10-17 2013-05-13 National Institute For Materials Science 極低温超音波疲労非破壊試験評価装置及び解析・評価方法

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