JPH0664031B2 - Contact medium for nondestructive inspection - Google Patents
Contact medium for nondestructive inspectionInfo
- Publication number
- JPH0664031B2 JPH0664031B2 JP1300600A JP30060089A JPH0664031B2 JP H0664031 B2 JPH0664031 B2 JP H0664031B2 JP 1300600 A JP1300600 A JP 1300600A JP 30060089 A JP30060089 A JP 30060089A JP H0664031 B2 JPH0664031 B2 JP H0664031B2
- Authority
- JP
- Japan
- Prior art keywords
- contact medium
- wave
- ultrasonic
- present
- waves
- 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
- 238000007689 inspection Methods 0.000 title claims description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229920005862 polyol Polymers 0.000 claims description 2
- 150000003077 polyols Chemical class 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000002592 echocardiography Methods 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000012907 honey Nutrition 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 238000009683 ultrasonic thickness measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は各種材料、構造物などの非破壊検査、すなわち
超音波探傷または厚さ測定や各種物性測定用接触媒質に
関する。さらに詳しくは、超音波透過性にすぐれ、取扱
い性の良好な超音波探傷または厚さ測定や各種物性測定
用の接触媒質に関する。The present invention relates to a contact medium for nondestructive inspection of various materials and structures, that is, ultrasonic flaw detection, thickness measurement, and various physical property measurements. More specifically, the present invention relates to a contact medium for ultrasonic flaw detection or thickness measurement and various physical property measurements that has excellent ultrasonic permeability and is easy to handle.
［従来の技術］ 非破壊検査の一種である超音波探傷法や超音波厚さ測定
法においては、被検査試料の表面より内部に向って超音
波パルス（縦波）を送り、界面、傷や格子欠陥などから
の反射波を受け、これを電気信号にかえてブラウン管に
うつし出し、それによって試料の厚さ、内部の傷、欠陥
の位置や大きさを知ることができる。[Prior Art] In the ultrasonic flaw detection method and the ultrasonic thickness measurement method, which are types of nondestructive inspection, ultrasonic pulses (longitudinal waves) are sent from the surface of the sample to be inspected toward the inside, It receives reflected waves from lattice defects, converts them into electrical signals, and sends them out to a cathode ray tube. By doing so, it is possible to know the thickness of the sample, internal scratches, and the position and size of defects.
従来は、超音波発振器の送波面および受波面と被検査試
料との間の空気間隙をなくし、受信波の減衰率を小さく
するために、油、グリセリン、水などの接触媒質を介在
させて測定を行なっていた。Conventionally, in order to eliminate the air gap between the transmitting surface and receiving surface of the ultrasonic oscillator and the sample to be inspected, and to reduce the attenuation factor of the received wave, measurement is performed by interposing a contact medium such as oil, glycerin, or water. Was being done.
最近では、油、水、グリセリンの欠点を改良したポリビ
ニルアルコール（PVA）を主成分とする接触媒質、カル
ボキシビニルポリマーを主成分とする接触媒質、ポリグ
リセリンを主成分とする接触媒体などが知られている。Recently, a contact medium containing polyvinyl alcohol (PVA) as a main component, a contact medium containing carboxyvinyl polymer as a main component, a contact medium containing polyglycerin as a main component, and the like, which have improved defects of oil, water and glycerin, are known. ing.
しかしながら、ポリグリセリンをのぞいた接触媒質は、
いずれも横波（SH波）超音波パルス（被検査面と平行な
波）を用いたばあい、被検査面にSH波を伝達することが
できず、鉄鋼の音響異方性、応力、弾性係数、内部の
傷、欠陥の位置や大きさなどを知ることができなかっ
た。However, the couplant except polyglycerin is
When using transverse wave (SH wave) ultrasonic pulse (wave parallel to the surface to be inspected), the SH wave cannot be transmitted to the surface to be inspected, and the acoustic anisotropy, stress and elastic modulus of steel , I was not able to know the position and size of internal scratches and defects.
一部の接触媒質には、水あめやハチミツが用いられ、SH
波の伝達が試みられているが、超音波のエコーの安定性
（再現性）がなく、しかも感度がわるく、後処理（ふき
とり）がしにくく実用には向かないものであった。For some couplants, starch syrup and honey are used.
Wave transmission has been attempted, but the stability (reproducibility) of ultrasonic echoes is poor, the sensitivity is poor, and post-processing (wiping) is difficult, making it unsuitable for practical use.
［発明が解決しようとする課題］ そこで本発明者らは、前記従来技術に鑑みて超音波（縦
波および横波（SH波））の透過性にすぐれ、取扱い性の
良好な接触媒質、すなわち従来の縦波を利用する超音波
探傷や厚さ測定にも使用することができ、加えて横波
（SH波）を利用する鉄鋼の音響異方性、応力、弾性係数
の測定および欠陥の検出用触媒媒質をうるべく種々検討
を重ねた結果、超音波（縦波および横波（SH波））透過
性にすぐれ、取扱い性も良好である非破壊検査用接触媒
質を見出し、本発明を完成するにいたった。[Problems to be Solved by the Invention] Therefore, in view of the above-mentioned conventional technique, the present inventors have a superior contact property of ultrasonic waves (longitudinal wave and transverse wave (SH wave)) and have good handleability, that is, a conventional contact medium. It can also be used for ultrasonic flaw detection and thickness measurement using longitudinal waves of steel, and in addition, it uses acoustic waves (SH waves) to measure acoustic anisotropy, stress, elastic modulus of steel and catalyst for defect detection. As a result of various investigations for the medium, a contact medium for nondestructive inspection having excellent ultrasonic wave (longitudinal wave and transverse wave (SH wave)) transparency and good handleability was found, and the present invention was completed. It was
［課題を解決するための手段］ すなわち、本発明は一般式（Ｉ）： （式中、ｎは１〜15の整数を示す）で表わされるポリエ
ーテルポリオールからなる非破壊検査用接触媒質に関す
る。[Means for Solving the Problems] That is, the present invention provides a compound represented by the general formula (I): (In the formula, n represents an integer of 1 to 15) The present invention relates to a non-destructive inspection contact medium composed of a polyether polyol.
［作用および実施例］ 本発明の非破壊検査用接触媒質は、前記したように、一
般式（Ｉ）： （式中、ｎは１〜15の整数を示す）で表わされるポリエ
ーテルポリオールからなる。なお、一般式（Ｉ）中、各
ｎは、それぞれ目的とする接触媒質に応じて適宜調整さ
れ、通常、１〜15、なかんづく２〜５の整数である。[Operation and Examples] As described above, the non-destructive inspection contact medium of the present invention has the general formula (I): (In the formula, n represents an integer of 1 to 15). In the general formula (I), each n is appropriately adjusted according to the intended couplant, and is usually an integer of 1 to 15, especially 2 to 5.
また本発明の接触媒質には、さらに要すれば、チクソト
ロピック性を有する増粘剤、防錆剤、金属石ケン、金属
粉、中和剤などを適宜添加してもよい。Further, if necessary, a thickener having a thixotropic property, a rust preventive, a metal soap, a metal powder, a neutralizing agent and the like may be appropriately added to the contact medium of the present invention.
本発明の接触媒質の大きな特徴点は、超音波の横波（SH
波）をも伝達するという点である。このことにより、今
まで困難とされていた鉄鋼の音響異方性、応力の測定、
弾性係数の測定などが可能となった。A major feature of the couplant of the present invention is that ultrasonic transverse waves (SH
Waves) are also transmitted. This makes it possible to measure the acoustic anisotropy and stress of steel, which was considered difficult until now.
It became possible to measure the elastic modulus.
本発明の接触媒質の別の特徴は、本来の目的である各種
材料、構造物などの超音波探傷（縦波）による欠陥の有
無、位置、大きさなどに対しても充分に感度よく使用す
ることができる点にある。Another feature of the couplant of the present invention is that it is used with sufficient sensitivity even to the presence or absence, position, size, etc. of defects due to ultrasonic flaw detection (longitudinal wave) of various materials and structures, which are the original purpose. There is a point that can be.
本発明のさらに別の特徴は、使用後の後処理がきわめて
簡単でウエスで拭き取るだけでよく、作業の省力化を図
ることができる点にある。Still another feature of the present invention is that post-treatment after use is extremely simple and only needs to be wiped off with a waste cloth, and labor can be saved.
つぎに実施例および比較例をあげて本発明の接触媒質を
説明する。Next, the contact medium of the present invention will be described with reference to Examples and Comparative Examples.
実施例１〜５および比較例１〜４ 第１表に示す組成の接触媒質を調整し、感度試験を下記
の方法に基づいて行なった。その結果を第２表に示す。Examples 1 to 5 and Comparative Examples 1 to 4 The contact medium having the composition shown in Table 1 was prepared, and the sensitivity test was conducted based on the following method. The results are shown in Table 2.
（感度試験−１） 表面粗さ50μｍを有する厚さ13mmの鋼板（100mm×200m
m）に、接触媒質を厚さ0.3mmとなるように塗布し、超音
波探傷器（三菱電機（株）製のFD−610）により感度の
測定（垂直方向で5MHz）を行なった。(Sensitivity test-1) A steel plate having a surface roughness of 50 μm and a thickness of 13 mm (100 mm × 200 m)
m) was coated with a contact medium to a thickness of 0.3 mm, and the sensitivity was measured (5 MHz in the vertical direction) with an ultrasonic flaw detector (FD-610 manufactured by Mitsubishi Electric Corporation).
このとき、探触子は5Z10N（縦波）と5Z10N（横波;SH
波）を用いた。At this time, the transducers are 5Z10N (longitudinal wave) and 5Z10N (transverse wave; SH
Wave) was used.
（感度試験−２） コンクリート厚さ200mmのブロック（200mm×200mm）
に、接触媒質を厚さが0.3mmとなるように塗布し、超音
波探傷器（（株）エー・アンド・ディ製のAD−3211）に
より感度の測定（垂直方向で0.2MHz）を行なった。この
とき、探触子には、0.2Z40N（縦波）を用いた。(Sensitivity test-2) Concrete 200 mm thick block (200 mm x 200 mm)
Then, the contact medium was applied to have a thickness of 0.3 mm, and the sensitivity was measured (0.2 MHz in the vertical direction) with an ultrasonic flaw detector (AD-3211 manufactured by A & D Co., Ltd.). . At this time, 0.2Z40N (longitudinal wave) was used for the probe.
第２表から明らかなごとく、本発明の接触媒質は縦波の
みならず横波（SH波）も伝えることができ、超音波透過
性および探傷作業性にすぐれていることがわかる。 As is clear from Table 2, the couplant of the present invention can transmit not only longitudinal waves but also transverse waves (SH waves), and is excellent in ultrasonic wave transmission and flaw detection workability.
さらにコンクリートの探傷においても雑エコーが少な
く、超音波透過性および探傷作業性にすぐれていること
がわかる。Furthermore, it can be seen that there are few noise echoes in the flaw detection of concrete, and the ultrasonic wave permeability and the flaw detection workability are excellent.
［発明の効果］ 本発明の接触媒質は、各種材料、構造物などの非破壊検
索に適し、手動、半自動、自動の超音波探傷ないし厚さ
測定に有利に使用され、かつSH波を伝達することができ
るので、鉄鋼の音響異方性、応力、弾性係数などを簡単
に知ることができ、かつ内部の傷、欠陥の位置や大きさ
も摺動的に探傷できるものである。[Advantage of the Invention] The couplant of the present invention is suitable for nondestructive retrieval of various materials and structures, and is advantageously used for manual, semi-automatic, and automatic ultrasonic flaw detection or thickness measurement, and transmits SH waves. Therefore, the acoustic anisotropy, stress, elastic coefficient, etc. of steel can be easily known, and the position and size of internal scratches and defects can be slidably detected.
また、本発明の接触媒質は、いかなる部所および作業環
境においても接触媒質としてきわめてすぐれた機能を果
たすものであり、また使用後も何らの問題を残さないも
のであるから、非破壊検査において卓抜した効果を奏し
うるものである。Further, the couplant of the present invention fulfills an extremely excellent function as a couplant in any place and working environment, and does not leave any problems after use. It is possible to achieve the effect.
さらに本発明の接触媒質は、無臭であり、皮膚に対する
刺激もまったくなく、人体に対してまったく無害である
から、安心して用いることができるものである。Furthermore, since the contact medium of the present invention is odorless, has no irritation to the skin, and is harmless to the human body, it can be safely used.
Claims (1)
ーテルポリオールからなる非破壊検査用接触媒質。1. General formula (I): A contact medium for nondestructive inspection, which comprises a polyether polyol represented by the formula (n represents an integer of 1 to 15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1300600A JPH0664031B2 (en) | 1989-11-18 | 1989-11-18 | Contact medium for nondestructive inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1300600A JPH0664031B2 (en) | 1989-11-18 | 1989-11-18 | Contact medium for nondestructive inspection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03160363A JPH03160363A (en) | 1991-07-10 |
| JPH0664031B2 true JPH0664031B2 (en) | 1994-08-22 |
Family
ID=17886798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1300600A Expired - Lifetime JPH0664031B2 (en) | 1989-11-18 | 1989-11-18 | Contact medium for nondestructive inspection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0664031B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100360278B1 (en) * | 2000-03-10 | 2002-11-09 | 김정엽 | The gel for supersonic probe and its manufacturing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6335236A (en) * | 1986-07-29 | 1988-02-15 | 三菱油化株式会社 | Coupling medium for ultrasonic probes |
| JP2899804B2 (en) * | 1988-06-02 | 1999-06-02 | タキロン株式会社 | Polymer gel-like elastic body and contact medium for ultrasonic diagnostic probe comprising the same |
-
1989
- 1989-11-18 JP JP1300600A patent/JPH0664031B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03160363A (en) | 1991-07-10 |
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