JPH0437947B2 - - Google Patents

Info

Publication number
JPH0437947B2
JPH0437947B2 JP59223884A JP22388484A JPH0437947B2 JP H0437947 B2 JPH0437947 B2 JP H0437947B2 JP 59223884 A JP59223884 A JP 59223884A JP 22388484 A JP22388484 A JP 22388484A JP H0437947 B2 JPH0437947 B2 JP H0437947B2
Authority
JP
Japan
Prior art keywords
defect
defects
underwater
location
sensor
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
JP59223884A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61102555A (ja
Inventor
Koji Ishihara
Koji Yamada
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan 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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to JP59223884A priority Critical patent/JPS61102555A/ja
Publication of JPS61102555A publication Critical patent/JPS61102555A/ja
Publication of JPH0437947B2 publication Critical patent/JPH0437947B2/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
    • 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)
JP59223884A 1984-10-26 1984-10-26 海洋構造物の欠陥監視方法 Granted JPS61102555A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59223884A JPS61102555A (ja) 1984-10-26 1984-10-26 海洋構造物の欠陥監視方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59223884A JPS61102555A (ja) 1984-10-26 1984-10-26 海洋構造物の欠陥監視方法

Publications (2)

Publication Number Publication Date
JPS61102555A JPS61102555A (ja) 1986-05-21
JPH0437947B2 true JPH0437947B2 (xx) 1992-06-22

Family

ID=16805215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59223884A Granted JPS61102555A (ja) 1984-10-26 1984-10-26 海洋構造物の欠陥監視方法

Country Status (1)

Country Link
JP (1) JPS61102555A (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5636672B2 (ja) * 2009-12-25 2014-12-10 東電設計株式会社 トンネル覆工の変状監視方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979290A (xx) * 1972-11-06 1974-07-31
JPS5585269A (en) * 1978-12-23 1980-06-27 Nippon Ii T L Kk Device for ranging sound source and the like
JPS5526467B2 (xx) * 1972-10-21 1980-07-14

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526467U (xx) * 1978-08-10 1980-02-20

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526467B2 (xx) * 1972-10-21 1980-07-14
JPS4979290A (xx) * 1972-11-06 1974-07-31
JPS5585269A (en) * 1978-12-23 1980-06-27 Nippon Ii T L Kk Device for ranging sound source and the like

Also Published As

Publication number Publication date
JPS61102555A (ja) 1986-05-21

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees