JPH04177159A - Ultrasonic flaw detection apparatus - Google Patents
Ultrasonic flaw detection apparatusInfo
- Publication number
- JPH04177159A JPH04177159A JP2303921A JP30392190A JPH04177159A JP H04177159 A JPH04177159 A JP H04177159A JP 2303921 A JP2303921 A JP 2303921A JP 30392190 A JP30392190 A JP 30392190A JP H04177159 A JPH04177159 A JP H04177159A
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- probe
- ring
- shaft
- head
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 239000000523 sample Substances 0.000 claims abstract description 40
- 238000007689 inspection Methods 0.000 claims description 26
- 238000010586 diagram Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
Classifications
-
- 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
- G01N2291/04—Wave modes and trajectories
- G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ボルト、ファスナ等の周囲のき裂検査に適用
される超音波探傷検査装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an ultrasonic flaw detection inspection device that is applied to inspecting cracks around bolts, fasteners, and the like.
超音波探傷検査によるボルト、ファスナ等の周囲のき裂
検査は、第４図（Ｃ）に示すように斜角反射法を用いて
行うものである。Inspection for cracks around bolts, fasteners, etc. by ultrasonic testing is carried out using the oblique reflection method as shown in FIG. 4(C).
従来の検査においては、検査員が最適検査条件となるボ
ルト、ファスナからの探触子の距離を目測しなから探触
子をボルト、ファスナ等の周囲にてスキャンさせて検査
を行っていた。In conventional inspections, the inspector visually measures the distance of the probe from the bolt or fastener, which is the optimum inspection condition, and then performs the inspection by scanning the probe around the bolt or fastener.
以下、従来の検査について第４図（ａ）、 （ｂ）によ
り詳細に説明する。ボルト、ファスナ等３の外周のある
点（仮にＡ点とする）に超音波探触子ｌを置き、検査用
のオッシロスコープ９を注視しながら検査員の手８によ
りｂ方向に微動させて、超音波経路２が最適となる位置
を捜して、点Ａにおける検査が終わる。次に、上記探触
子１をボルト、ファスナ等３からの半径が長さａの円周
上をＣ方向に探触子１の１〜１７２個分移動させて、同
様に検査用のオッシロスコープ９を注視しなからｂ方向
に微動させて、超音波経路２が最適となる位置を捜す。The conventional inspection will be explained in detail below with reference to FIGS. 4(a) and 4(b). Place the ultrasonic probe l at a certain point on the outer periphery of bolts, fasteners, etc. 3 (temporarily call it point A), and move it slightly in direction b with the inspector's hand 8 while watching the oscilloscope 9 for inspection. The inspection at point A is completed by searching for the position where the sound wave path 2 is optimal. Next, the probe 1 is moved in the C direction on the circumference of the bolt, fastener, etc. 3 with a radius of length a by 1 to 172 probes 1, and the oscilloscope 9 for inspection is similarly moved. While keeping a close eye on the position, move it slightly in the b direction to find the position where the ultrasonic path 2 is optimal.
このように、順次、探触子１をボルト、ファスナ３のま
わりをＣ方向に探触子１の１〜１７２個分づつ移動させ
てはｂ方向に微動させて検査し、これをボルト、ファス
ナ３の全周にわたって行い、検査を完了していた。In this way, the probe 1 is sequentially moved in the C direction around the bolts and fasteners 3 by 1 to 172 probes 1, and then slightly moved in the b direction to inspect the bolts and fasteners. The inspection was completed over the entire circumference of 3.
従来の超音波探傷検査装置において、ボルトやファスナ
周りの欠陥を検出する場合には、第４図（ａ）に示すよ
うにボルト外周と探触子の距離が一定となるように、探
触子を微動させて最適検査位置を全周にわたって捜す必
要がある。このため、検査に要する時間が長く、かつ、
検査位置が不正確であるなどの課題があった。In conventional ultrasonic testing equipment, when detecting defects around bolts and fasteners, the probe is moved so that the distance between the bolt outer circumference and the probe is constant, as shown in Figure 4(a). It is necessary to search for the optimal inspection position over the entire circumference by slightly moving the For this reason, the time required for inspection is long, and
There were issues such as inaccurate inspection positions.
さらに、航空機の実際の機体検査時を考慮すると、検査
場所によっては作業者の姿勢が不安定となり、検査の正
確性に欠（などの課題もあった。Furthermore, when considering the actual inspection of an aircraft, there were also issues such as the worker's posture becoming unstable depending on the inspection location, resulting in a lack of accuracy in the inspection.
第５図を参照しながらこのような実作業例を説明する。An example of such an actual work will be explained with reference to FIG.
検査位置Ｂでは検査員はオソシロスコープを見ながら検
査可能であるが、検査位置りでは検査員の手がとどきに
くい。なお、もぐり込んで検査を行う場合は検査結果の
情報を示すオッシロスコープが見にく＼、さらに安全性
でも課題があった。At inspection position B, the inspector can inspect while looking at the oscilloscope, but at the inspection position it is difficult for the inspector to reach. Furthermore, when inspecting by crawling into the facility, it is difficult to see the oscilloscope that shows the information on the inspection results, and there are also safety issues.
本発明は、上記のような課題を解消するためになされた
もので、−変操触子の位置決めを行った後は全周にわた
って探触子を移動させるだけで、距離を一定に保つよう
にできるとともに、自動で探触子がボルト、ファスナに
そって回転できる超音波探傷検査装置を提供することを
目的とする。The present invention has been made to solve the above-mentioned problems. - After positioning the variable probe, the probe can be simply moved around the entire circumference to maintain a constant distance. It is an object of the present invention to provide an ultrasonic flaw detection inspection device in which a probe can be automatically rotated along bolts and fasteners.
〔課題を解決するための手段］
本発明の超音波探傷装置は、周囲のき裂が検査されるボ
ルトの頭部が挿入されるリング、同リングが一端に結合
された伸縮可能な可変式シャフト、同シャフトの他端に
設けられ上記ボルトの周囲のき裂を探傷する探触子、お
よび同探触子が接続され上記き裂を表示する表示装置を
備えたことを特徴としている。[Means for Solving the Problems] The ultrasonic flaw detection device of the present invention includes a ring into which the head of a bolt to be inspected for surrounding cracks is inserted, and an extendable and retractable variable shaft connected to one end of the ring. , a probe provided at the other end of the shaft to detect cracks around the bolt, and a display device connected to the probe to display the crack.
上記において、まず、探触子とボルトの間の長さが所定
の長さとなるように、可変式シャフトの長さを調節する
。In the above, first, the length of the variable shaft is adjusted so that the length between the probe and the bolt becomes a predetermined length.
上記可変式シャトの長さを設定後、上記ボルトの頭部に
可変式シャフトに結合されたリングを挿入し、可変式シ
ャフトがボルト頭部を一周するように可変式シャフトを
回転させながら、探触子により欠陥を探傷し、探触子の
出力信号を表示装置に入力し表示させる。After setting the length of the variable shaft, insert the ring connected to the variable shaft into the head of the bolt, and rotate the variable shaft so that it goes around the bolt head while searching. Defects are detected using a probe, and the output signal from the probe is input to a display device and displayed.
上記により、探触子はボルトとの間の距離を正確に保つ
ことができるため探触子をボルト方向に前後移動させる
必要がなく、狭隘個所等にも安全に適用でき、表示装置
を注視することができるため精度の高い超音波探傷検査
の実施が可能となる。As a result of the above, the distance between the probe and the bolt can be maintained accurately, so there is no need to move the probe back and forth in the direction of the bolt, and it can be safely applied to narrow spaces, etc., and it is possible to keep a close eye on the display device. This makes it possible to perform ultrasonic flaw detection with high accuracy.
本発明の第１の実施例を第１図（ａ）、 （ｂｌに示す
。A first embodiment of the present invention is shown in FIGS. 1(a) and 1(bl).
第１図（ａ）、 （ｂ）に示す本実施例の超音波探傷検
査装置は、ボルト３の頭部が挿入されるリング５ａ、同
リング５ａが一端に結合された伸縮可能な可変式シャフ
ト５、および同シャフト５の他端部に設けられオッシロ
スコープ９が電線により接続された探触子１を備えてい
る。The ultrasonic flaw detection inspection device of this embodiment shown in FIGS. 1(a) and 1(b) includes a ring 5a into which the head of the bolt 3 is inserted, and an extendable and retractable variable shaft connected to one end of the ring 5a. 5, and a probe 1 provided at the other end of the shaft 5 and connected to an oscilloscope 9 by an electric wire.
上記において、まず、探触子１とボルト３の間の長さが
所定の長さとなるように、可変式シャフトの長さを調節
する。In the above, first, the length of the variable shaft is adjusted so that the length between the probe 1 and the bolt 3 becomes a predetermined length.
上記シャフト５の長さを設定後、第１図（ａ）、 （ｂ
）に示すようにボルト３に本実施例の装置を取り付け、
ボルト３のまわりを回転させると、ボルト３と探触子１
の間の距離が一定の長さに保たれた状態で、探触子１は
ボルト３のまわりを一周し、第１図（ｂ）に示す経路２
で超音波を発射し、クランク４を検出してオノシロスコ
ープ９に表示する。After setting the length of the shaft 5, Fig. 1 (a), (b)
), attach the device of this example to the bolt 3,
When rotating around bolt 3, bolt 3 and probe 1
The probe 1 goes around the bolt 3 while keeping the distance between
emits ultrasonic waves, detects the crank 4, and displays it on the onoscilloscope 9.
上記により、探触子はボルトとの間の距離を正確に保つ
ことができるため探触子をボルト方向に前後移動させる
必要がなく、狭隘個所等にも安全に適用でき、オッシロ
スコープを注視することができるため精度の高い超音波
探傷検査の実施が可能となった。As a result of the above, the distance between the probe and the bolt can be maintained accurately, so there is no need to move the probe back and forth in the direction of the bolt, and it can be safely applied to narrow places, etc., and it is easy to keep a close eye on the oscilloscope. This makes it possible to perform ultrasonic flaw detection with high accuracy.
本発明の第２の実施例を第２図（ａ）、 （ｂ）に示す
。A second embodiment of the invention is shown in FIGS. 2(a) and 2(b).
第２図（ａ）、 （ｂ）に示す本実施例は、上記第１の
実施例における可変式シャフト５が回転用車輪６とモー
タ７を有する自動スキャン機構を介してリング５ｂに結
合されている。In the present embodiment shown in FIGS. 2(a) and 2(b), the variable shaft 5 in the first embodiment is coupled to the ring 5b via an automatic scanning mechanism having rotating wheels 6 and a motor 7. There is.
本実施例においては、リング５ａがボルト３頭部に固定
されており、可変式シャフト５がリング５ｂ上を回転し
、探触子１がボルト３との間に一定距離（最適検査位置
）を保ちながら自動的にボルト３のまわりをまわり、検
査を行うものであり、探触子１の移動を自動的に行うこ
とができる点で、第１の実施例より更に優れている。In this embodiment, the ring 5a is fixed to the head of the bolt 3, the variable shaft 5 rotates on the ring 5b, and the probe 1 maintains a certain distance (optimal inspection position) between the bolt 3 and the ring 5a. This embodiment is even better than the first embodiment in that the probe 1 can be automatically moved around the bolt 3 and inspected while maintaining its position.
本発明の第３の実施例を第３図（ａ）、 Ｃｂ）に示す
。A third embodiment of the present invention is shown in FIGS. 3(a) and Cb).
第３図（ａ）、 （ｂ）に示す本実施例は、第２の実施
例におけるオッシロスコープ９に替えて自動記録計１０
を配設している。The present embodiment shown in FIGS. 3(a) and 3(b) uses an automatic recorder 10 instead of the oscilloscope 9 in the second embodiment.
has been set up.
本実施例においては、−度最適検査位置を設定すればボ
ルト３の全周にわたって検査可能であるため、検査時に
自動記録が可能となる。従来の検査員がオッシロスコー
プで確認していく方法では、欠陥を検査員が見落す場合
もあったが、本実施例の場合には記録が残るためこのよ
うな不具合がなくなる。In this embodiment, if the optimum inspection position is set, the entire circumference of the bolt 3 can be inspected, so automatic recording is possible during the inspection. In the conventional method in which an inspector uses an oscilloscope to check, defects may be overlooked by the inspector, but this embodiment eliminates such problems because records are kept.
本発明の超音波探傷検査装置は、探触子が他端に設けら
れ伸縮可能な可変式シャフトの一端に結合されたリング
をボルト頭部に挿入し、探触子が探傷しながら可変式シ
ャフトにボルトのまわりを回転させることによって、探
触子はボルトとの間の距離を正確に保つことができるた
め探触子をボルト方向に前後移動させる必要がなく、狭
隘個所等にも安全に適用でき、表示装置を注視すること
ができるため精度の高い超音波探傷検査の実施が可能と
なる。In the ultrasonic flaw detection inspection device of the present invention, a ring, which is connected to one end of a variable shaft with a probe provided at the other end and which is extendable and retractable, is inserted into the bolt head, and while the probe is detecting flaws, the variable shaft By rotating around the bolt, the distance between the probe and the bolt can be maintained accurately, so there is no need to move the probe back and forth in the direction of the bolt, making it safe for use in narrow spaces. Since the display device can be watched closely, highly accurate ultrasonic flaw detection can be performed.
第１図は本発明の第１の実施例の説明図で、（ａ）は平
面図、（ｂ）は（ａ）の１．−１１．矢視図、第２図は
本発明の第２の実施例の説明図で、（ａ）は平面図、■
）は（ａ）のｎ、−ｎ、矢視図、第３図は本発明の第３
の実施例の説明図で、（ａ）は平面図、（ｂ）は（ａ）
の■。
−■５矢視図、第４図は従来の超音波探傷の説明図で、
（ａ）は平面図、［有］）は（ａ）のＩＶｂ部分の詳細
説明図、（Ｃ）は（ａ）の■。−ＩＶ、矢視図、第５図
は従来の狭隘部における超音波探傷の説明図である。
１・・・探触子、 ３・・・ボルト、
５・・・可変式シャフト、 ５ａ・・・リング、６・
・・回転用車輪、 ７・・・モータ、９・・・オッシロ
スコープ、 １０・・・自動記録計。
代理人 弁理士 坂 間 暁 外２２躬２凶
（α）
躬３図FIG. 1 is an explanatory diagram of a first embodiment of the present invention, in which (a) is a plan view, and (b) is a 1. -11. The arrow view and FIG. 2 are explanatory views of the second embodiment of the present invention, (a) is a plan view, and
) is the n, -n, arrow view of (a), and Figure 3 is the third view of the present invention.
(a) is a plan view, (b) is an explanatory diagram of the embodiment of (a).
■. - ■ 5 arrow view, Figure 4 is an explanatory diagram of conventional ultrasonic flaw detection,
(a) is a plan view, [exist]) is a detailed explanatory diagram of the IVb portion of (a), and (C) is (■) of (a). -IV, arrow view, FIG. 5 is an explanatory diagram of conventional ultrasonic flaw detection in a narrow area. DESCRIPTION OF SYMBOLS 1... Probe, 3... Bolt, 5... Variable shaft, 5a... Ring, 6...
... Rotating wheel, 7... Motor, 9... Oscilloscope, 10... Automatic recorder. Agent Patent Attorney Akatsuki Sakama
Claims (1)
グ、同リングが一端に結合された伸縮可能な可変式シャ
フト、同シャフトの他端に設けられ上記ボルトの周囲の
き裂を探傷する探触子、および同探触子が接続され上記
き裂を表示する表示装置を備えたことを特徴とする超音
波探傷検査装置。A ring into which the head of the bolt is inserted to inspect for cracks around it, an extendable and retractable variable shaft connected to one end of the ring, and a variable shaft installed at the other end of the shaft to detect cracks around the bolt. 1. An ultrasonic flaw detection inspection device comprising: a probe for detecting cracks; and a display device connected to the probe for displaying the cracks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2303921A JPH04177159A (en) | 1990-11-13 | 1990-11-13 | Ultrasonic flaw detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2303921A JPH04177159A (en) | 1990-11-13 | 1990-11-13 | Ultrasonic flaw detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04177159A true JPH04177159A (en) | 1992-06-24 |
Family
ID=17926883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2303921A Pending JPH04177159A (en) | 1990-11-13 | 1990-11-13 | Ultrasonic flaw detection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04177159A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002005903A (en) * | 2000-06-20 | 2002-01-09 | Mitsubishi Heavy Ind Ltd | Ultrasonic inspection device and flaw detection method |
-
1990
- 1990-11-13 JP JP2303921A patent/JPH04177159A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002005903A (en) * | 2000-06-20 | 2002-01-09 | Mitsubishi Heavy Ind Ltd | Ultrasonic inspection device and flaw detection method |
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