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
Links
- 230000007547 defect Effects 0.000 claims description 37
- 238000012544 monitoring process Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007847 structural defect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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)
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)
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5526467U (xx) * | 1978-08-10 | 1980-02-20 |
-
1984
- 1984-10-26 JP JP59223884A patent/JPS61102555A/ja active Granted
Patent Citations (3)
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 |