JPS6431048A - Method for measuring surface opening crack depth of concrete by ultrasonic wave - Google Patents
Method for measuring surface opening crack depth of concrete by ultrasonic waveInfo
- Publication number
- JPS6431048A JPS6431048A JP62186702A JP18670287A JPS6431048A JP S6431048 A JPS6431048 A JP S6431048A JP 62186702 A JP62186702 A JP 62186702A JP 18670287 A JP18670287 A JP 18670287A JP S6431048 A JPS6431048 A JP S6431048A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- crack
- probe
- wave
- depth
- 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
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE:To measure the depth of a crack easily in a real time with high accuracy, by inputting a low frequency surface wave to concrete from the transmitting probe among the transmitting and receiving probes brought into contact with the surface of concrete in opposed relationship across the crack. CONSTITUTION:A transmitting probe 12 and a receiving probe 13 are brought into contact with the surface 11a of concrete 11 to be measured in opposed relation to a crack 14 and a low frequency surface wave is allowed to be incident to the concrete 11 from the contact surface of the probe 12. The incident surface wave propagates to the leading end of the depth of the crack 14 and the transversal wave of the component parallel to the surface of the concrete 11 converted in a mode at said leading end is received by the probe 13 and the propagation time received through the routes of the surface wave and transversal wave is measured as an evaluation index. By this method, the depth of the open crack 14 on the surface 11a of the concrete 11 can be easily measured with good accuracy in a real time.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62186702A JPS6431048A (en) | 1987-07-28 | 1987-07-28 | Method for measuring surface opening crack depth of concrete by ultrasonic wave |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62186702A JPS6431048A (en) | 1987-07-28 | 1987-07-28 | Method for measuring surface opening crack depth of concrete by ultrasonic wave |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6431048A true JPS6431048A (en) | 1989-02-01 |
Family
ID=16193137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62186702A Pending JPS6431048A (en) | 1987-07-28 | 1987-07-28 | Method for measuring surface opening crack depth of concrete by ultrasonic wave |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6431048A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0416708A (en) * | 1990-05-10 | 1992-01-21 | Mitsubishi Electric Corp | Surface acoustic wave probe |
JP2003035703A (en) * | 2001-07-18 | 2003-02-07 | Mitsubishi Electric Corp | Nondestructive inspection apparatus for concrete structure |
KR100454361B1 (en) * | 2002-06-04 | 2004-11-03 | 에스큐엔지니어링(주) | Portable ultrasonic device for estimating the crack depth of concrete construnction |
JP2007205848A (en) * | 2006-02-01 | 2007-08-16 | Tottori Univ | Method and device for surveying crack depth in concrete structure by ultrasonic method |
JP2010019658A (en) * | 2008-07-10 | 2010-01-28 | Shimizu Corp | Measuring device and measurement method of depth of concrete surface crack by ultrasonic wave |
JP4870297B2 (en) * | 1999-06-23 | 2012-02-08 | エリエミ マテリアイス レフラターリオス リミタダ | Biohydrolysis apparatus and method for biomass |
CN113777047A (en) * | 2021-09-02 | 2021-12-10 | 哈尔滨工业大学 | Method for identifying position and size of metal surface crack based on thermoelastic effect |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61122562A (en) * | 1984-11-20 | 1986-06-10 | Mitsubishi Heavy Ind Ltd | Measuring method of depth of cracking |
-
1987
- 1987-07-28 JP JP62186702A patent/JPS6431048A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61122562A (en) * | 1984-11-20 | 1986-06-10 | Mitsubishi Heavy Ind Ltd | Measuring method of depth of cracking |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0416708A (en) * | 1990-05-10 | 1992-01-21 | Mitsubishi Electric Corp | Surface acoustic wave probe |
JP4870297B2 (en) * | 1999-06-23 | 2012-02-08 | エリエミ マテリアイス レフラターリオス リミタダ | Biohydrolysis apparatus and method for biomass |
JP2003035703A (en) * | 2001-07-18 | 2003-02-07 | Mitsubishi Electric Corp | Nondestructive inspection apparatus for concrete structure |
KR100454361B1 (en) * | 2002-06-04 | 2004-11-03 | 에스큐엔지니어링(주) | Portable ultrasonic device for estimating the crack depth of concrete construnction |
JP2007205848A (en) * | 2006-02-01 | 2007-08-16 | Tottori Univ | Method and device for surveying crack depth in concrete structure by ultrasonic method |
JP2010019658A (en) * | 2008-07-10 | 2010-01-28 | Shimizu Corp | Measuring device and measurement method of depth of concrete surface crack by ultrasonic wave |
CN113777047A (en) * | 2021-09-02 | 2021-12-10 | 哈尔滨工业大学 | Method for identifying position and size of metal surface crack based on thermoelastic effect |
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