JPS6228866B2 - - Google Patents
Info
- Publication number
- JPS6228866B2 JPS6228866B2 JP53111766A JP11176678A JPS6228866B2 JP S6228866 B2 JPS6228866 B2 JP S6228866B2 JP 53111766 A JP53111766 A JP 53111766A JP 11176678 A JP11176678 A JP 11176678A JP S6228866 B2 JPS6228866 B2 JP S6228866B2
- Authority
- JP
- Japan
- Prior art keywords
- probe
- base material
- flaw detection
- arm
- receiving
- 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
Links
- 239000000523 sample Substances 0.000 claims description 59
- 238000001514 detection method Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 18
- 239000010953 base metal Substances 0.000 claims description 4
- 230000007547 defect Effects 0.000 description 20
- 238000000034 method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002592 echocardiography Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】
本発明は鉄骨構造建造物等の溶接部の非破壊探
傷装置に関し、特に二探触子を利用する超音波探
傷装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nondestructive flaw detection device for welded parts of steel structures, etc., and particularly to an ultrasonic flaw detection device that uses two probes.
最近鉄骨構造建造物の増加に伴ない、溶接施工
が広く採用されて、その施工の良否、すなわち溶
接の良否は厳重な管理が要求されている。溶接部
の欠陥を発見する非破壊検査には種々の探傷装置
が用いられているが、なかでも超音波を利用する
探傷装置がすぐれており、特に厚肉鋼材の溶接や
現場における溶接作業にその威力を発揮してい
る。 Recently, with the increase in the number of steel frame buildings, welding construction has been widely adopted, and the quality of the construction, that is, the quality of welding, is required to be strictly controlled. Various types of flaw detection equipment are used for non-destructive testing to find defects in welded parts, but flaw detection equipment that uses ultrasonic waves is particularly excellent, and is especially useful for welding thick-walled steel materials and welding work on site. It is demonstrating its power.
超音波を利用する探傷装置としては、超音波の
送信と受信を兼ねた一つの探触子よりなる装置が
従来より知られているが、この装置による場合は
高度のテクニツクを要し、さらに溶接部の欠陥断
面積（板厚方向の欠陥の高さ）まで測定できない
欠点があつた。 Flaw detection equipment that uses ultrasonic waves has long been known to consist of a single probe that transmits and receives ultrasonic waves, but this equipment requires advanced techniques and requires welding. There was a drawback that it was not possible to measure the defect cross-sectional area (height of the defect in the thickness direction) of the part.
そのために例えば実開昭51−135585号公報に開
示されているように、送信探触子および受信探触
子を母材に沿つて反対方向に動かす技術が提案さ
れている。 For this purpose, a technique has been proposed in which a transmitting probe and a receiving probe are moved in opposite directions along the base material, as disclosed in, for example, Japanese Utility Model Application Publication No. 51-135585.
しかしながら、かかる公知の技術では各探触子
が母材の表面に設けられているので、溶接部を垂
直方向に探触し、したがつて幅方向の探触には装
置を表面上で幅方向に動かさねばならなかつた。
また特定の位置を探傷しようとする場合にかかる
公知技術ではその装置および探触子の移動が簡単
に行えない。 However, in such known techniques, each probe is provided on the surface of the base material, so that the weld is probed vertically, and therefore for widthwise probes the device is placed on the surface in the widthwise direction. I had to move it.
Furthermore, when attempting to detect flaws at a specific location, the known technology does not allow easy movement of the device and the probe.
しだかつて本発明の目的は、溶接部の幅方向の
探傷作業を簡単に行うことができ、しかも任意に
選択した位置の探傷作業を容易に行うことのでき
る二探触子を利用する超音波探傷装置を提供する
にある。 However, it is an object of the present invention to provide an ultrasonic wave using two probes that can easily perform flaw detection in the width direction of a welded part, and can also easily perform flaw detection at arbitrarily selected positions. To provide flaw detection equipment.
本発明による二探触子を利用する超音波探傷装
置は母材の厚さとほぼ等しい幅を有していて母材
の一側面に配置され母材と溶接部との境界面に向
けて超音波ビームを送信する送信探触子および同
様に母材の厚さとほぼ等しい幅を有していて送信
探触子が配置される側と同じ側の母材の側面に配
置され境界面に当つて反射した超音波ビームを受
信する受信探触子を備え、そして母材の表面に着
脱自在に設けられた定盤を有し、その定盤には互
いに噛合う一対の歯車が回転自在に取付けられ、
それらの歯車にはそれぞれ第１のアームの一端が
固定され、それらの第１のアームの他端にはそれ
ぞれ第２のアームの一端が軸によつて枢着され、
そして第２のアームの他端はそれぞれ送信探触子
および受信探触子に設けた固定軸に枢着されてい
る。 The ultrasonic flaw detection device using two probes according to the present invention has a width approximately equal to the thickness of the base material, is placed on one side of the base material, and transmits ultrasonic waves toward the interface between the base metal and the weld. A transmitting probe that transmits a beam and a beam that also has a width approximately equal to the thickness of the base material and is placed on the side of the base material on the same side as the transmitting probe is placed and is reflected by hitting the boundary surface. It has a receiving probe that receives the ultrasonic beam, and has a surface plate that is removably attached to the surface of the base material, and a pair of gears that mesh with each other are rotatably attached to the surface plate.
One end of a first arm is fixed to each of the gears, one end of a second arm is pivotally connected to the other end of each of the first arms by a shaft,
The other ends of the second arms are pivotally connected to fixed shafts provided on the transmitting probe and the receiving probe, respectively.
このように母材の一側面に沿つて各探触子が動
くので溶接部の幅方向の欠陥を一度の操作で知る
ことができる。しかもその設置に関し、定盤を母
材の表面に固定すればよく、そして一方の探触子
を手で動かせる他方の探触子は同じ距離だけ母材
の側面に沿つて移動するので、簡単に任意の位置
の探傷作業を行うことができる。 Since each probe moves along one side of the base material in this way, defects in the width direction of the weld can be detected with a single operation. Moreover, regarding the installation, all that is needed is to fix the surface plate to the surface of the base material, and one probe can be moved by hand, while the other probe moves the same distance along the side of the base material, making it easy to install. Flaw detection work can be performed at any location.
それ故に建造物等の溶接部を簡単かつ容易に探
傷することができる。 Therefore, welded parts of buildings etc. can be easily and easily detected.
以下、図面を参照して本発明の二探触子を利用
する超音波探傷装置を用いて柱とはりとの溶接部
を検査する場合を例に挙げ実施例を説明する。 EMBODIMENT OF THE INVENTION Hereinafter, an embodiment will be described with reference to the drawings, taking as an example a case where a welded portion between a pillar and a beam is inspected using an ultrasonic flaw detection apparatus using two probes according to the present invention.
第１図イ，ロにおいてＡは柱フランジ（第２図
参照）、Ｂははりフランジ（母材）、Ｃは溶接部
（第２図参照）を示す。本発明の二探触子を利用
する超音波探傷装置（以下、「探傷装置」とい
う。）は大別してはりフランジＢと溶接部Ｃとの
境界面Ｔ（第２図参照）に向けて超音波ビームを
発する送信探触子および境界面Ｔに当つて反射し
た超音波ビームを受信する受信探触子と、送信探
触子および受信探触子をはりフランジＢの一側面
に沿つて互に反対方向に等距離移動させる治具と
よりなつている。 In Figs. 1A and 1B, A indicates a column flange (see Fig. 2), B indicates a beam flange (base metal), and C indicates a welded portion (see Fig. 2). The ultrasonic flaw detection device (hereinafter referred to as the “flaw detection device”) that uses the two probes of the present invention can be roughly divided into two types: A transmitting probe that emits a beam and a receiving probe that receives an ultrasound beam that hits the boundary surface T and is reflected, and the transmitting probe and the receiving probe are arranged opposite to each other along one side of the beam flange B. It consists of a jig that moves an equal distance in the direction.
まず治具について説明する。図において１は定
盤で、はりフランジＢ、すなわち母材上に着脱自
在に定着するためのマグネツトを備えており、ま
た定盤１には互いに噛み合う歯車２ａ，２ｂが軸
３ａ，３ｂにより回転できるようにして取付けら
れている。歯車２ａ，２ｂには第１のアーム４
ａ，４ｂの一端が固定されており、第１のアーム
４ａ，４ｂの他端には軸５ａ，５ｂにより第２の
アーム６ａ，６ｂの一端が枢着されており、第２
のアーム６ａ，６ｂの他端には後述する送信探触
子および受信探触子の固定軸が通る孔を有してい
る。 First, the jig will be explained. In the figure, reference numeral 1 denotes a surface plate, which is equipped with a beam flange B, that is, a magnet for removably fixing it on the base material.The surface plate 1 also has gears 2a and 2b that mesh with each other and can be rotated by shafts 3a and 3b. It is installed like this. A first arm 4 is attached to the gears 2a and 2b.
One ends of the first arms 4a and 4b are fixed, and one ends of the second arms 6a and 6b are pivotally connected to the other ends of the first arms 4a and 4b by shafts 5a and 5b.
The other ends of the arms 6a and 6b have holes through which fixed shafts of a transmitter probe and a receiver probe, which will be described later, pass.
次に探触子について説明する。７ははりフラン
ジＢの厚さとほぼ等しい幅を有していてはりフラ
ンジＢの一側面に配置され境界面Ｔに向つて超音
波ビームを発生する送信探触子、９は同様にはり
フランジＢの厚さとほぼ等しい幅を有していて送
信探触子が配置される側と同じ側のはりフランジ
Ｂの側面に配置され境界面Ｔに当つて反射した超
音波ビームを受信する受信探触子で、各探触子
７，９はともに通常屈折角45゜のものを使用す
る。また各探触子７，９は固定軸８，１０が取付
けられており、これら軸８，１０を前述の治具の
第２のリンク６ａ，６ｂの先端の孔に通すことに
より各探触子７，９を治具に取付ける。各探触子
７，９を治具に取付けた状態において前述の治具
の歯車およびリンク機構により各探触子７，９は
はりフランジＢの一側面に沿つて互に反対方向に
等距離移動される。 Next, the probe will be explained. 7 is a transmitting probe which has a width almost equal to the thickness of beam flange B and is placed on one side of beam flange B and generates an ultrasonic beam toward boundary surface T; A receiving probe that has a width approximately equal to the thickness, is placed on the side of the beam flange B on the same side as the transmitting probe, and receives the ultrasonic beam reflected by the boundary surface T. , the probes 7 and 9 both have a normal refraction angle of 45°. Further, fixed shafts 8, 10 are attached to each probe 7, 9, and by passing these shafts 8, 10 through the holes at the tips of the second links 6a, 6b of the aforementioned jig, each probe Attach 7 and 9 to the jig. With each probe 7, 9 attached to the jig, each probe 7, 9 is moved equidistantly in opposite directions along one side of beam flange B by the gears and link mechanism of the jig described above. be done.
次に前述の構成の探傷装置を用いて柱Ａとはり
Ｂとの溶接部Ｃを検査する方法について説明す
る。なお、送信探触子、受信探触子ともに屈折角
45゜のものを使用するものとする。 Next, a method of inspecting the weld C between the pillar A and the beam B using the flaw detection device having the above-described configuration will be described. Note that the refraction angle of both the transmitting and receiving probes is
A 45° angle shall be used.
第２図に示すようにはりフランジＢの一側面に
おいて溶接部Ｃからはり幅に相当する距離Ｗに位
置をマークする。これを探傷の中心点とする。ま
た探傷感度および欠陥エコーが検出されるビーム
路程を設定するために、第３図に示すように送信
探触子７と受信探触子９をはりフランジＢの一側
面に互に向き合うようにセツトし、超音波探傷器
の感度設定および欠陥エコーの検出位置のマーク
を行う。 As shown in FIG. 2, a position is marked on one side of the beam flange B at a distance W corresponding to the beam width from the weld C. This is the center point for flaw detection. In addition, in order to set the flaw detection sensitivity and the beam path for detecting defect echoes, the transmitter probe 7 and the receiver probe 9 are set so that they face each other on one side of the flange B, as shown in Fig. 3. Then, set the sensitivity of the ultrasonic flaw detector and mark the detection position of the defect echo.
次いで治具に送信探触子７と受信探触子９を取
付け（各探触子７，９の固定軸８，１０を治具の
第２のリンク６ａ，６ｂの先端の孔に通す。）、グ
リセリン等の接触媒質を通して超音波を鋼材中に
伝搬させる。そして溶接部Ｃの全面を探傷するた
めに、治具を用いて送信、受信の各探触子７，９
をはりフランジＢの一側面に沿つて矢印方向に走
査させる。 Next, attach the transmitting probe 7 and the receiving probe 9 to the jig (pass the fixed shafts 8, 10 of each probe 7, 9 through the holes at the tips of the second links 6a, 6b of the jig). , the ultrasonic waves are propagated into the steel material through a couplant such as glycerin. Then, in order to detect flaws on the entire surface of the welded part C, a jig is used to test the transmitting and receiving probes 7 and 9.
is scanned along one side of the beam flange B in the direction of the arrow.
検出された欠陥エコー高さを測定し、さらに探
触子７，９の移動に伴う欠陥エコー高さの変化を
測定し記録する。そして溶接部全域から検出され
た欠陥エコー高さを積算する。一方欠陥断面積が
既知な対比試験片を作成し、欠陥断面積と欠陥エ
コー高さの関係を明確にしておき、測定した溶接
部の欠陥エコー高さの積算値と欠陥断面積が既知
な対比試験片の欠陥エコー高さの積算値とを比較
し、溶接部の欠陥断面積を推定する。 The detected defect echo height is measured, and changes in the defect echo height due to movement of the probes 7 and 9 are also measured and recorded. Then, the defect echo heights detected from the entire area of the weld are integrated. On the other hand, create a comparison specimen with a known defect cross-sectional area, clarify the relationship between the defect cross-sectional area and the defect echo height, and compare the integrated value of the defect echo height of the measured weld with a known defect cross-sectional area. The defect cross-sectional area of the weld is estimated by comparing the integrated value of the defect echo height of the test piece.
本探傷装置より断面欠陥率を精度よく評価でき
る。さらに溶接線全線を覆うように前後走査し、
その結果を積分すれば溶接継手部の欠陥断面積を
推定できる。また対比試験片は検査毎に製作する
必要はない。 The cross-sectional defect rate can be evaluated with high accuracy using this flaw detection device. Furthermore, scan forward and backward to cover the entire weld line,
By integrating the results, the defect cross-sectional area of the welded joint can be estimated. Furthermore, it is not necessary to produce a comparison test piece for each inspection.
以上の如く本発明によれば、母材の表面に定盤
を設置固定するだけで、一回の操作で溶接部の幅
方向の欠陥を探傷することができ、しかも一方の
探触子を手で動かせば、他方の探触子は自動的に
母材の側面に沿つて動くので特定の位置を探傷す
る場合に極めて便利である。また同じ側面を探触
子が動くので、一方の側面に探触子を設置できな
い場合にも実施できる。 As described above, according to the present invention, defects in the width direction of a welded part can be detected in a single operation by simply installing and fixing a surface plate on the surface of the base metal, and moreover, one probe can be used manually. When the other probe is moved, the other probe automatically moves along the side of the base material, which is extremely convenient when detecting flaws at a specific location. Furthermore, since the probe moves on the same side, it can be carried out even when the probe cannot be installed on one side.
第１図イ，ロは本発明にかかる探傷装置を示
し、イは平面図、ロは側面図である。第２図は本
発明にかかる探傷装置を用いての柱フランジとは
りフランジとの溶接部の検査方法を示す平面図で
ある。第３図は探傷感度および欠陥エコーが検出
されるビーム路程を設定するために、送信探触子
と受信探触子をはりフランジの一側面にセツトし
た図である。
Ａ…柱フランジ、Ｂ…はりフランジ、Ｃ…溶接
部、Ｔ…境界面、１…定盤、２ａ，２ｂ…歯車、
３ａ，３ｂ…軸、４ａ，４ｂ…第１のアーム、５
ａ，５ｂ…軸、６ａ，６ｂ…第２のアーム、７…
送信探触子、８…送信探触子固定軸、９…受信探
触子、１０…受信探触子固定軸。
FIGS. 1A and 1B show a flaw detection apparatus according to the present invention, in which A is a plan view and B is a side view. FIG. 2 is a plan view showing a method of inspecting a weld between a column flange and a beam flange using the flaw detection device according to the present invention. FIG. 3 is a diagram in which a transmitting probe and a receiving probe are set on one side of a beam flange in order to set the flaw detection sensitivity and the beam path for detecting defect echoes. A... Column flange, B... Beam flange, C... Welded part, T... Boundary surface, 1... Surface plate, 2a, 2b... Gear,
3a, 3b...axis, 4a, 4b...first arm, 5
a, 5b...axis, 6a, 6b...second arm, 7...
Transmission probe, 8...Transmission probe fixed axis, 9...Reception probe, 10...Reception probe fixed axis.
Claims (1)
の一側面に配置され母材と溶接部との境界面に向
けて超音波ビームを送信する送信探触子および同
様に母材の厚さとほぼ等しい幅を有していて送信
探触子が配置される側と同じ側の母材の側面に配
置され境界面に当つて反射した超音波ビームを受
信する受信探触子を備え、そして母材の表面に着
脱自在に設けられた定盤を有し、その定盤には互
いに噛合う一対の歯車が回転自在に取付けられ、
それらの歯車にはそれぞれ第１のアームの一端が
固定され、それらの第１のアームの他端にはそれ
ぞれ第２のアームの一端が軸によつて枢着され、
そして第２のアームの他端はそれぞれ送信探触子
および受信探触子に設けた固定軸に枢着されてい
ることを特徴とする二探触子を利用する超音波探
傷装置。1. A transmitting probe that has a width approximately equal to the thickness of the base material and is placed on one side of the base material and transmits an ultrasonic beam toward the interface between the base metal and the weld, and a a receiving probe having a width approximately equal to the thickness and disposed on the side of the base material on the same side as the transmitting probe and receiving the ultrasonic beam reflected by hitting the boundary surface; It has a surface plate that is removably installed on the surface of the base material, and a pair of gears that mesh with each other are rotatably attached to the surface plate.
One end of a first arm is fixed to each of the gears, one end of a second arm is pivotally connected to the other end of each of the first arms by a shaft,
An ultrasonic flaw detection apparatus using two probes, wherein the other end of the second arm is pivotally connected to a fixed shaft provided on the transmitting probe and the receiving probe, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11176678A JPS5539007A (en) | 1978-09-13 | 1978-09-13 | Ultrasonic flaw detector using two detecting elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11176678A JPS5539007A (en) | 1978-09-13 | 1978-09-13 | Ultrasonic flaw detector using two detecting elements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5539007A JPS5539007A (en) | 1980-03-18 |
| JPS6228866B2 true JPS6228866B2 (en) | 1987-06-23 |
Family
ID=14569632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11176678A Granted JPS5539007A (en) | 1978-09-13 | 1978-09-13 | Ultrasonic flaw detector using two detecting elements |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5539007A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4522064A (en) * | 1983-12-12 | 1985-06-11 | Sigma Research Inc. | Ultrasonic method and apparatus for determining the depth of a crack in a solid material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51135585U (en) * | 1975-04-23 | 1976-11-01 |
-
1978
- 1978-09-13 JP JP11176678A patent/JPS5539007A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5539007A (en) | 1980-03-18 |
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