JPS62207954A - Tire type ultrasonic probe - Google Patents
Tire type ultrasonic probeInfo
- Publication number
- JPS62207954A JPS62207954A JP61050494A JP5049486A JPS62207954A JP S62207954 A JPS62207954 A JP S62207954A JP 61050494 A JP61050494 A JP 61050494A JP 5049486 A JP5049486 A JP 5049486A JP S62207954 A JPS62207954 A JP S62207954A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- ultrasonic
- steel plate
- rubber
- pair
- 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.)
- Granted
Links
- 239000000523 sample Substances 0.000 title claims abstract description 19
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920001971 elastomer Polymers 0.000 claims abstract description 9
- 239000005060 rubber Substances 0.000 claims abstract description 9
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 22
- 239000010959 steel Substances 0.000 abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000005062 Polybutadiene Substances 0.000 abstract description 3
- 229920002857 polybutadiene Polymers 0.000 abstract description 3
- 230000002238 attenuated effect Effects 0.000 abstract description 2
- 229920002379 silicone rubber Polymers 0.000 abstract description 2
- 239000004945 silicone rubber Substances 0.000 abstract description 2
- -1 butadiene compound Chemical class 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、タイヤ型超音波接触子に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a tire-type ultrasonic contactor.
従来、連続的に移動する鋼板に存在する疵を検出するに
は、例えば、タイヤ型゛超音波探触子が用いられる。こ
の探触子は、第３図に示すように、１対の固定軸１と、
１対の固定軸１の間に設けられた超音波振動子２と、超
音波振動子２を囲むように１対の固定＠Ｘに軸受３を介
して回転自在に取り付けられたタイヤ４とからなってい
る。そして、タイヤ４と超音波振動子２との間には、水
や油等の接触媒体５が充填されている。Conventionally, for example, a tire-shaped ultrasonic probe has been used to detect flaws in a continuously moving steel plate. As shown in FIG. 3, this probe includes a pair of fixed shafts 1,
An ultrasonic transducer 2 provided between a pair of fixed shafts 1, and tires 4 rotatably attached to a pair of fixings @X via bearings 3 so as to surround the ultrasonic transducer 2. It has become. A contact medium 5 such as water or oil is filled between the tire 4 and the ultrasonic vibrator 2.
° このように構成されてい乞、従来のタイヤ型超音波
探触子においては、連続的に移動する鋼板６の上面に接
触媒体８を介してタイヤ４が接触するように探触子を設
置する。そして、超音波振動子２から超音波を鋼板６に
向けて発振させると、超音波は接触媒体５を伝播し、そ
の後鋼板６全板波および表面波で伝播し、疵が存在すれ
ば、反射エコーは往路と同経路で再び超音波振動子２に
入射する。このようにして、鋼板６に存在する疵が連続
的に検出される。しかし、これは、薄板や鋼板表層部の
探傷が主流であり、通常の超音波探傷で用いられる２〜
ｌ ＯＭＨｚの縦波で十分な感度余裕をもって、鋼板内
部の欠陥検出ができるものがなかった。その理由は、接
触媒体５をタイヤ４および鋼板６との間の往復音圧通過
率が小さいことにあった。しかも、タイヤ４の肉厚が薄
いためにタイヤ４の使用寿命が短かかった。また、タイ
ヤ４と鋼板６との間に接触媒体８を介さないドライカッ
プリングの状態で、板厚測定ができるタイヤ型探触子も
存在しなかった。° In the conventional tire-type ultrasonic probe configured as described above, the probe is installed so that the tire 4 is in contact with the top surface of the continuously moving steel plate 6 via the contact medium 8. . When ultrasonic waves are emitted from the ultrasonic transducer 2 toward the steel plate 6, the ultrasonic waves propagate through the contact medium 5, and then propagate through the steel plate 6 as waves and surface waves. The echo enters the ultrasonic transducer 2 again on the same path as the outward path. In this way, flaws existing on the steel plate 6 are continuously detected. However, this method is mainly used for flaw detection on the surface layer of thin plates and steel plates, and the
1) There was no one that could detect defects inside a steel plate with sufficient sensitivity margin using OMHz longitudinal waves. The reason for this is that the reciprocating sound pressure passage rate between the contact medium 5 and the tire 4 and the steel plate 6 is small. Moreover, since the tire 4 had a thin wall thickness, the tire 4 had a short service life. Furthermore, there has not been a tire-shaped probe capable of measuring the thickness of the tire 4 and the steel plate 6 in a dry coupling state without using the contact medium 8 between the tire 4 and the steel plate 6.
そこで、超音波の減衰が小さく、鋼板との往復音圧通過
率が犬きく、シかも、タイヤの使用寿命が長く、さらに
、ドライカップリングで板厚測定が行えるタイヤ型超音
波探触子の開発が望まれているが、かかる探触子は未だ
提案されていない。Therefore, we developed a tire-shaped ultrasonic probe that has low attenuation of ultrasonic waves, a high round-trip sound pressure passage rate with the steel plate, a long tire service life, and can measure plate thickness using dry coupling. Although development is desired, such a probe has not yet been proposed.
従って、この発明の目的は、超音波の減衰が小さく、か
つ、鋼板との往復音圧通過率が大きく、しかも、タイヤ
の使用寿命が長く、さらに、ドライカップリングで板厚
測定が行なえるタイヤ型超音波探触子を提供することに
ある。Therefore, an object of the present invention is to provide a tire that has a low attenuation of ultrasonic waves, a high round-trip sound pressure passage rate with a steel plate, a long tire service life, and a tire that can be used to measure plate thickness by dry coupling. The purpose of the present invention is to provide a type ultrasonic probe.
この発明は、１対の固定軸と、前記１対の固定軸の間に
取り付けられた超音波振動子と、前記超音波振動子を囲
むように前記１対の固定軸に回転自在に取り付けられた
タイヤと、前記タイヤと前記超音波振動子との間に充填
された接触媒体とからなるタイヤ型超音波探触子におい
て、前記タイヤが厚肉のブタジェン系またはシリコン系
のゴムによって作られ、そして、前記超音波振動子の前
面にブタジェン系またはシリコン系のゴムによって作ら
れた伝播部材が、前記タイヤと若干の間隙をあけて取シ
付けられていることに特徴に有するものである。The present invention includes a pair of fixed shafts, an ultrasonic transducer mounted between the pair of fixed shafts, and an ultrasonic transducer mounted rotatably on the pair of fixed shafts so as to surround the ultrasonic transducer. A tire-shaped ultrasonic probe comprising a tire and a contact medium filled between the tire and the ultrasonic transducer, wherein the tire is made of thick butadiene-based or silicone-based rubber, The present invention is characterized in that a propagation member made of butadiene-based or silicone-based rubber is attached to the front surface of the ultrasonic transducer with a slight gap from the tire.
次に、この発明のタイヤ型超音波探触子の一実施態様を
図面を参照しながら説明する。Next, one embodiment of the tire-shaped ultrasonic probe of the present invention will be described with reference to the drawings.
第１図は、この発明のタイヤ型超音波探触子の一実施態
様の断面図、第２図は、第１図のＡ−Ａ線断面図である
。FIG. 1 is a sectional view of an embodiment of the tire-type ultrasonic probe of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1.
第１図および第２図において、超音波振動子２は、１対
の固定軸１間に取シ付けられている。タイヤ４は、水や
油と同等の減衰定数をもち、鋼板との往復音圧通過率が
大きいブタジェン系ゴムまたはシリコン系ゴムによって
作られている。このうち特に好ましいのは、ブタジェン
系ゴムである。In FIGS. 1 and 2, an ultrasonic transducer 2 is attached between a pair of fixed shafts 1. The tire 4 is made of butadiene-based rubber or silicone-based rubber, which has a damping constant equivalent to that of water or oil and has a high reciprocating sound pressure passage rate with a steel plate. Among these, butadiene rubber is particularly preferred.
タイヤ４は、超音波振動子２を囲むように軸受３を介し
て１対の固定軸１に回転自在に取り付けられている。The tires 4 are rotatably attached to a pair of fixed shafts 1 via bearings 3 so as to surround the ultrasonic transducer 2 .
超音波振動子２の前面には、タイヤ４と同様にブタジェ
ン系ゴムまたはシリコン系ゴムによって作られた伝播部
材７が取り付けられている。伝播部材７とタイヤ４との
間には、これらが接触しない程度の若干の隙間が形成さ
れている。A propagation member 7 made of butadiene rubber or silicone rubber, like the tire 4, is attached to the front surface of the ultrasonic transducer 2. A slight gap is formed between the propagation member 7 and the tire 4 so that they do not come into contact with each other.
タイヤ４と伝播部材７との間には、水や油等の通常の接
触媒体５が充填されている。A common contact medium 5 such as water or oil is filled between the tire 4 and the propagation member 7.
このように構成されている、この発明のタイヤ型超音波
探触子においては、連続的に移動する鋼板６の上面に接
触媒体８を介してタイヤ４が接触するように探触子を設
置する。そして、超音波振動子２から超音波を鋼板６に
向けて発振させると、超音波は伝播部材７およびタイヤ
４を伝播し、その後、２〜１０ ＭＨｚの縦波が鋼板内
部に伝播し、反射源が存在すれば１反射エコーは、往路
と同経路で再び超音波振動子２に入射する。このように
、超音波は、伝播過程で減衰しに＜＜、鋼板との往復音
圧通過率も大きいので、鋼板６の探傷は勿論、ドライカ
ップリングで板厚の測定も行なえる。しかも、タイヤ４
の肉厚が厚いので、使用寿命が長い。In the tire-shaped ultrasonic probe of the present invention configured as described above, the probe is installed so that the tire 4 is in contact with the top surface of the continuously moving steel plate 6 via the contact medium 8. . When an ultrasonic wave is emitted from the ultrasonic transducer 2 toward the steel plate 6, the ultrasonic wave propagates through the propagation member 7 and the tire 4, and then longitudinal waves of 2 to 10 MHz propagate inside the steel plate and are reflected. If the source exists, one reflected echo enters the ultrasonic transducer 2 again along the same path as the forward path. In this way, since the ultrasonic waves are attenuated during the propagation process and have a high reciprocating sound pressure passage rate with the steel plate, it is possible not only to detect flaws in the steel plate 6 but also to measure the plate thickness by dry coupling. Moreover, tires 4
It has a thick wall, so it has a long service life.
以上説明したように、この発明によれば、超音波の減衰
が小さく、鋼板との往復音圧通過率が大きいので、探傷
は勿論、ドライカップリングで板厚の測定も行なえ、し
かも、タイヤの使用寿命が大幅に延びるといったきわめ
て有用な効果がもたらされる。As explained above, according to the present invention, the attenuation of ultrasonic waves is small and the round-trip sound pressure passage rate with respect to the steel plate is large, so it is possible to perform not only flaw detection but also plate thickness measurement by dry coupling. The extremely useful effect is that the service life is significantly extended.
第１図は、この発明のタイヤ型超音波探触子の一笑施態
様を示す断面図、第２図は、第１図のＡ−Ａ線断面図、
第３図は、従来のタイヤ型超音波探触子勿示す断面図で
ある。図面において、ｌ・・・”固定軸、 ２
・・・超音波振動子、３・・・軸受、 ４・・
・タイヤ、５・・・接触媒体、 ６・・・鋼板、７
・・・伝播部材、 ８・・・接触媒体。FIG. 1 is a sectional view showing a simple embodiment of the tire-type ultrasonic probe of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1,
FIG. 3 is a sectional view of a conventional tire-type ultrasonic probe. In the drawings, l...” fixed axis, 2
... Ultrasonic vibrator, 3... Bearing, 4...
・Tire, 5... Contact medium, 6... Steel plate, 7
... Propagation member, 8... Contact medium.
Claims (1)
た超音波振動子と、前記超音波振動子を囲むように前記
１対の固定軸に回転自在に取り付けられたタイヤと、前
記タイヤと前記超音波振動子との間に充填された接触媒
体とからなるタイヤ型超音波探触子において、前記タイ
ヤが厚肉のブタジエン系またはシリコン系ゴムによつて
作られ、そして、前記超音波振動子の前面にブタジエン
系またはシリコン系のゴムによつて作られた伝播部材が
、前記タイヤと若干の間隙をあけて取り付けられている
ことを特徴とするタイヤ型超音波探触子。a pair of fixed shafts, an ultrasonic transducer mounted between the pair of fixed shafts, and a tire rotatably mounted on the pair of fixed shafts so as to surround the ultrasonic transducer; In a tire-type ultrasonic probe comprising a contact medium filled between the tire and the ultrasonic transducer, the tire is made of thick-walled butadiene-based or silicone-based rubber, and the A tire-type ultrasonic probe characterized in that a propagation member made of butadiene-based or silicon-based rubber is attached to the front surface of an ultrasonic transducer with a slight gap between the tire and the tire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61050494A JPS62207954A (en) | 1986-03-10 | 1986-03-10 | Tire type ultrasonic probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61050494A JPS62207954A (en) | 1986-03-10 | 1986-03-10 | Tire type ultrasonic probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62207954A true JPS62207954A (en) | 1987-09-12 |
| JPH0348464B2 JPH0348464B2 (en) | 1991-07-24 |
Family
ID=12860483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61050494A Granted JPS62207954A (en) | 1986-03-10 | 1986-03-10 | Tire type ultrasonic probe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62207954A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02131660U (en) * | 1989-04-07 | 1990-11-01 | ||
| JP2013210296A (en) * | 2012-03-30 | 2013-10-10 | Jfe Steel Corp | Self-propelled flaw detection device |
-
1986
- 1986-03-10 JP JP61050494A patent/JPS62207954A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02131660U (en) * | 1989-04-07 | 1990-11-01 | ||
| JP2013210296A (en) * | 2012-03-30 | 2013-10-10 | Jfe Steel Corp | Self-propelled flaw detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0348464B2 (en) | 1991-07-24 |
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