JP2018205185A5 - - Google Patents
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- JP2018205185A5 JP2018205185A5 JP2017111991A JP2017111991A JP2018205185A5 JP 2018205185 A5 JP2018205185 A5 JP 2018205185A5 JP 2017111991 A JP2017111991 A JP 2017111991A JP 2017111991 A JP2017111991 A JP 2017111991A JP 2018205185 A5 JP2018205185 A5 JP 2018205185A5
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- thin plate
- change
- wave
- mhz
- frequency
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- 239000000523 sample Substances 0.000 claims 10
- 238000007689 inspection Methods 0.000 claims 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 7
- 230000005540 biological transmission Effects 0.000 claims 3
- 238000002604 ultrasonography Methods 0.000 claims 3
- 238000004378 air conditioning Methods 0.000 claims 1
- 230000000644 propagated Effects 0.000 claims 1
- 230000001902 propagating Effects 0.000 claims 1
Claims (5)
前記薄板構造物を構成する少なくとも１つの薄板の一方側端面及び反対側端面に送信用探触子及び受信用探触子をそれぞれ配置し、
前記薄板を伝播する板波を励起する横波を、前記薄板の厚さ変化又は水滴付着に応じて板波の速度変化が得られるように予め設定した周波数にて、前記送信用探触子から前記薄板の一方側端面に入射し、
前記薄板を伝播した板波を前記受信用探触子で受信し、
前記受信用探触子で受信した板波の伝播時間を演算し、この伝播時間を予め取得した参照時間と比較することにより、前記薄板の厚さ変化又は水滴付着を検出することを特徴とする超音波検査方法。 An ultrasonic inspection method for detecting a change in the thickness of a thin plate structure or adhesion of water droplets,
A transmission probe and a reception probe are arranged on one end surface and the opposite end surface of at least one thin plate constituting the thin plate structure, respectively.
A transverse wave that excites a plate wave propagating through the thin plate, at a preset frequency so that a change in the thickness of the thin plate or a change in the speed of the plate wave in accordance with the attachment of water droplets, from the transmission probe, Incident on one end face of the thin plate,
The plate wave propagated through the thin plate is received by the receiving probe,
Calculating the propagation time of the plate wave received by the receiving probe, and comparing the propagation time with a previously acquired reference time to detect a change in thickness of the thin plate or adhesion of water droplets. Ultrasound method.
前記送信用探触子は、単一の周波数ｆ１を有する横波を前記薄板の一方側端面に入射しており、
前記周波数ｆ１は、前記薄板の厚さ変化又は水滴付着に応じてＡ０モード成分の板波の速度変化が得られるように、０．１ＭＨｚ≦ｆ１≦１ＭＨｚの範囲内で設定したことを特徴とする超音波検査方法。 In the ultrasonic inspection method according to claim 1,
The transmitting probe has a transverse wave having a single frequency f1 incident on one end surface of the thin plate,
The frequency f1 is set within a range of 0.1 MHz ≦ f1 ≦ 1 MHz so as to obtain a change in the speed of the plate wave of the A0 mode component in accordance with a change in the thickness of the thin plate or adhesion of water droplets. Ultrasound method.
前記送信用探触子は、単一の周波数ｆ２を有する横波を前記薄板の一方側端面に入射しており、
前記周波数ｆ２は、前記薄板の厚さ変化又は水滴付着に応じてＳ０モード成分の板波の速度変化が得られるように、１ＭＨｚ≦ｆ２≦５ＭＨｚの範囲内で設定したことを特徴とする超音波検査方法。 In the ultrasonic inspection method according to claim 1,
The transmitting probe has a transverse wave having a single frequency f2 incident on one end surface of the thin plate,
The frequency f2 is set within a range of 1 MHz ≦ f 2 ≦ 5 MHz so as to obtain a change in the speed of the plate wave of the S0 mode component in accordance with a change in the thickness of the thin plate or adhesion of water droplets. Sonic inspection method.
前記送信用探触子は、第１の周波数ｆ１から第２の周波数ｆ２まで変化するチャープ波形の横波を前記薄板の一方側端面に入射しており、
前記第１の周波数ｆ１は、前記薄板の厚さ変化又は水滴付着に応じてＡ０モード成分の板波の速度変化が得られるように、０．１ＭＨｚ≦ｆ１≦１ＭＨｚの範囲内で設定し、
前記第２の周波数ｆ２は、前記薄板の厚さ変化又は水滴付着に応じてＳ０モード成分の板波の速度変化が得られるように、１ＭＨｚ≦ｆ２≦５ＭＨｚの範囲内で設定したことを特徴とする超音波検査方法。 In the ultrasonic inspection method according to claim 1,
The transmitting probe has a transverse wave of a chirp waveform that changes from a first frequency f1 to a second frequency f2 incident on one end surface of the thin plate,
The first frequency f1 is set within a range of 0.1 MHz ≦ f1 ≦ 1 MHz so as to obtain a change in the thickness of the thin plate or a change in the speed of the plate wave of the A0 mode component according to the adhesion of water droplets,
The second frequency f2 is set within a range of 1 MHz ≦ f2 ≦ 5 MHz so as to obtain a change in the speed of the plate wave of the S0 mode component according to a change in the thickness of the thin plate or adhesion of water droplets. Ultrasonic inspection method.
空調ダクトを構成する少なくとも１つの薄板の一方側端面及び反対側端面に前記送信用探触子及び前記受信用探触子をそれぞれ常設して定期的に検査を実施することを特徴とする超音波検査方法。 In the ultrasonic inspection method according to claim 1,
Ultrasound characterized in that the transmission probe and the reception probe are permanently installed on one end face and the opposite end face of at least one thin plate constituting an air conditioning duct, respectively, and are periodically inspected. Inspection methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017111991A JP6802113B2 (en) | 2017-06-06 | 2017-06-06 | Ultrasonography method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017111991A JP6802113B2 (en) | 2017-06-06 | 2017-06-06 | Ultrasonography method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2018205185A JP2018205185A (en) | 2018-12-27 |
| JP2018205185A5 true JP2018205185A5 (en) | 2020-02-13 |
| JP6802113B2 JP6802113B2 (en) | 2020-12-16 |
Family
ID=64955593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017111991A Active JP6802113B2 (en) | 2017-06-06 | 2017-06-06 | Ultrasonography method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6802113B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7319620B2 (en) * | 2019-01-15 | 2023-08-02 | ヤマハ発動機株式会社 | Internal condition detection device and vehicle |
| JP7323494B2 (en) * | 2020-07-08 | 2023-08-08 | 日立Ｇｅニュークリア・エナジー株式会社 | Air conditioning duct monitoring system |
| CN113607818B (en) * | 2021-08-04 | 2024-02-27 | 中北大学 | Ultrasonic detection device and method for multi-interface bonding quality |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57187609A (en) * | 1981-05-13 | 1982-11-18 | Hitachi Ltd | Measuring device for decrease in wall thickness |
| JPH05322736A (en) * | 1992-05-15 | 1993-12-07 | Koji Toda | Plate wave ultrasonic device and viscosity sensor with it |
| US5456114A (en) * | 1993-04-23 | 1995-10-10 | Panametrics, Inc. | Elastic wave sensing system |
| JP4656754B2 (en) * | 2001-05-01 | 2011-03-23 | 秀郎 西野 | Pipe parameter estimation method, pipe material state evaluation method, pipe inspection method, and pipe parameter estimation apparatus used therefor |
| JP3913144B2 (en) * | 2002-08-27 | 2007-05-09 | 株式会社日立製作所 | Piping inspection method and apparatus |
| JP4094464B2 (en) * | 2003-03-28 | 2008-06-04 | コスモ石油株式会社 | Nondestructive inspection method and nondestructive inspection device |
| JP2006058291A (en) * | 2004-07-23 | 2006-03-02 | Tokyo Institute Of Technology | Defect inspection device and method |
| JP4686378B2 (en) * | 2006-02-27 | 2011-05-25 | 株式会社東芝 | Pipe inspection device |
| NO327139B1 (en) * | 2006-05-30 | 2009-05-04 | Clampon As | Method and system for determining loss of material thickness in a solid structure |
| EP2120046A1 (en) * | 2008-05-13 | 2009-11-18 | Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO | Ultrasonic modelling |
| EP2304422B1 (en) * | 2008-07-22 | 2020-01-08 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Corrosion monitoring |
| JP5431905B2 (en) * | 2009-12-18 | 2014-03-05 | 日立Ｇｅニュークリア・エナジー株式会社 | Nondestructive inspection method and nondestructive inspection apparatus using guide wave |
-
2017
- 2017-06-06 JP JP2017111991A patent/JP6802113B2/en active Active
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