JPH0727750A - Standard test piece for nondestructive inspection of pipe - Google Patents
Standard test piece for nondestructive inspection of pipeInfo
- Publication number
- JPH0727750A JPH0727750A JP5181966A JP18196693A JPH0727750A JP H0727750 A JPH0727750 A JP H0727750A JP 5181966 A JP5181966 A JP 5181966A JP 18196693 A JP18196693 A JP 18196693A JP H0727750 A JPH0727750 A JP H0727750A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- wall thickness
- test piece
- standard test
- same
- 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
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、配管非破壊検査に用い
られる標準試験片に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standard test piece used for nondestructive inspection of piping.
【０００２】[0002]
【従来の技術】各種配管の腐食等の劣化を検査する配管
非破壊検査方法として、図４に示すような超音波の反射
エコーを利用したものが知られている。かかる配管非破
壊検査方法は、探触子２から被検査配管３に超音波を放
射し、反射エコーの到来時間か欠陥の位置を測定し、反
射エコーの大きさから欠陥の大きさを測定するものであ
る。超音波測定器の測定精度または分解能のバラツキ、
温度ドリフト等の影響を除去するために、校正用の標準
試験片により試験結果の校正を行なうのが一般的であ
る。従来は、配管測定でも、図５に示すような、平坦で
厚みが階段状に変化し、厚さが６ミリ以上の平板を校正
するＪＩＳ規格の標準試験片５を用いて校正している。2. Description of the Related Art As a pipe nondestructive inspection method for inspecting various types of pipes for deterioration such as corrosion, there is known a method using reflected echo of ultrasonic waves as shown in FIG. In such a pipe nondestructive inspection method, ultrasonic waves are radiated from the probe 2 to the pipe 3 to be inspected, the arrival time of the reflection echo or the position of the defect is measured, and the size of the defect is measured from the size of the reflection echo. It is a thing. Variations in measurement accuracy or resolution of ultrasonic measuring instruments,
In order to remove the influence of temperature drift and the like, it is common to calibrate the test results with a standard test piece for calibration. Conventionally, even in piping measurement, calibration is performed using a JIS standard test piece 5 for calibrating a flat plate having a flat thickness and a stepwise change in thickness as shown in FIG.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
ＪＩＳ規格の標準試験片を用いた配管非破壊検査方法は
以下のような問題点が未解決である。 （Ａ）配管材の場合は、図４に示すように、測定対象の
外周面が円弧状となるため、超音波測定器の探触子２と
被検査配管３との間に未接触部位が生じ、平板用の標準
試験片では等価性が得られず正確に校正できない。しか
も、口径毎に円弧が異なるから感度の調整を一定にした
り、欠陥検出性能を一定にすることができない。 （Ｂ）更に、口径毎に円弧が異なり、探触子２と被検査
配管３との接触面積が大きく変わるため、底面（内面）
または欠陥位置からのエコーの高さも大きく変化し、欠
陥部位の大きさの判定評価にもバラツキを生じる。欠陥
部位が小さい場合は、厚み方向の位置によっては全く測
定できないこともある。 （Ｃ）標準試験片は肉厚が６ミリ以上を対象とするた
め、大半の肉厚が６ミリ以下の配管を対象とした場合、
肉厚が薄くなるほど適切な校正が得られない。 （Ｄ）超音波を収束させ分解能を高めるために先端を細
くした円錐状のディレー材２１（図４参照）を使用する
と、ディレー材２１の表面が円弧状に摩耗し、焦点距離
が変化するので感度調整を頻繁に実施しなければならな
い。感度調整の頻度が増すと、ディレー材２１の摩耗も
増し、その結果、感度調整回数は相乗的に増える。However, the conventional pipe non-destructive inspection method using the standard JIS standard test piece has not yet solved the following problems. In the case of (A) piping material, as shown in FIG. 4, since the outer peripheral surface of the measurement target has an arc shape, there is a non-contact portion between the probe 2 of the ultrasonic measuring device and the pipe 3 to be inspected. However, the standard test piece for flat plate cannot obtain the equivalence and cannot be calibrated accurately. Moreover, since the circular arc is different for each aperture, it is not possible to make the sensitivity adjustment constant or the defect detection performance constant. (B) Further, since the circular arc is different for each aperture and the contact area between the probe 2 and the pipe to be inspected 3 is greatly changed, the bottom surface (inner surface)
Alternatively, the height of the echo from the defect position changes significantly, and the evaluation of the size of the defect portion also varies. When the defective portion is small, it may not be possible to measure it at all depending on the position in the thickness direction. (C) Since the standard test piece is intended for a wall thickness of 6 mm or more, when most pipes having a wall thickness of 6 mm or less are targeted,
The thinner the wall, the less accurate calibration can be obtained. (D) If a conical delay material 21 (see FIG. 4) with a thin tip is used to converge the ultrasonic waves and improve the resolution, the surface of the delay material 21 is worn in an arc shape and the focal length changes. Sensitivity adjustment must be performed frequently. As the frequency of sensitivity adjustment increases, the wear of the delay material 21 also increases, and as a result, the number of times of sensitivity adjustment synergistically increases.
【０００４】そこで、本発明の第１の課題は、上述する
問題点を解決し、被検査配管の口径に応じて感度の調整
を適切、かつ、容易にし得る配管非破壊検査用の標準試
験片を提供することである。Therefore, a first object of the present invention is to solve the above-mentioned problems, and to appropriately and easily adjust the sensitivity according to the diameter of the pipe to be inspected, which is a standard test piece for pipe nondestructive inspection. Is to provide.
【０００５】本発明の第２の課題は、欠陥の大きさを校
正し得る配管非破壊検査用の標準試験片を提供すること
である。A second object of the present invention is to provide a standard test piece for pipe nondestructive inspection capable of calibrating the size of defects.
【０００６】本発明の第３の課題は、感度の調整及び欠
陥の大きさの校正を同一試験片で行ない得る配管非破壊
検査用の標準試験片を提供することである。A third object of the present invention is to provide a standard test piece for non-destructive inspection of pipes in which sensitivity adjustment and defect size calibration can be performed with the same test piece.
【０００７】[0007]
【課題を解決するための手段】上述した第１の課題解決
のため、本発明は、第１の部分と、第２の部分とを含む
配管非破壊検査用の標準試験片であって、第１の部分及
び第２の部分は円弧部分を含んでおり、前記第１の部分
は前記円弧部分が被検査配管と同一の外径及び肉厚とな
っており、前記第２の部分は、前記円弧部分の外周面が
前記第１の部分の外周面の曲率と同一曲率となり、肉厚
が前記第１の部分の肉厚よりも薄くなっている。In order to solve the above-mentioned first problem, the present invention provides a standard test piece for pipe non-destructive inspection, which includes a first part and a second part. The first portion and the second portion include an arc portion, the first portion has the same outer diameter and wall thickness as the pipe to be inspected, and the second portion is the The outer peripheral surface of the arc portion has the same curvature as the outer peripheral surface of the first portion, and the wall thickness is smaller than the wall thickness of the first portion.
【０００８】第２の課題解決のため、前記第２の部分
は、前記円弧部分の内周面側に開口径が異なる複数個の
凹部を有している。To solve the second problem, the second portion has a plurality of recesses having different opening diameters on the inner peripheral surface side of the arc portion.
【０００９】第３の課題解決のため、前記第１の部分
は、前記円弧部分の内周面側に開口径が異なる複数個の
別の凹部を有している。In order to solve the third problem, the first portion has a plurality of different recesses having different opening diameters on the inner peripheral surface side of the arc portion.
【００１０】[0010]
【作用】第１の部分は円弧部分が被検査配管と同一の外
径となっており、第２の部分は円弧部分の外周面が第１
の部分の外周面の曲率と同一曲率となっているから、実
際の被検査配管の測定状態と標準試験片の測定状態とが
同一の関係となり、被検査配管の測定と、標準試験片の
測定とを対にして行ない両者を比較すると、感度を一定
の状態に保つことができる。In the first portion, the arc portion has the same outer diameter as the pipe to be inspected, and in the second portion, the outer peripheral surface of the arc portion is the first.
Since the curvature of the outer peripheral surface of the part is the same, the actual measurement state of the pipe to be inspected and the measurement state of the standard test piece have the same relationship, and the measurement of the pipe to be inspected and the standard test piece are measured. When paired with and compared, the sensitivity can be kept constant.
【００１１】第１の部分は円弧部分が被検査配管と同一
の肉厚となっており、第２の部分は円弧部分の肉厚が第
１の部分の肉厚よりも薄くなっているから、第１の部分
により被検査配管と同一の肉厚に対応した校正が可能と
なり、第２の部分により被検査配管より薄い肉厚、例え
ば欠陥の深さに対応した校正が可能となる。このため、
実際の測定データを標準試験片の肉厚に応じて適切、か
つ、容易に校正でき、各種の欠陥の深さに対して欠陥検
出性能を一定にすることができる。The arc portion of the first portion has the same thickness as that of the pipe to be inspected, and the second portion has the thickness of the arc portion smaller than that of the first portion. The first portion enables calibration corresponding to the same wall thickness as the inspected pipe, and the second portion enables calibration corresponding to a thinner wall thickness than the inspected pipe, for example, the depth of the defect. For this reason,
The actual measurement data can be appropriately and easily calibrated according to the thickness of the standard test piece, and the defect detection performance can be made constant with respect to various defect depths.
【００１２】また、被検査配管の口径が異なっても、被
検査配管と同一の外径及び肉厚のものを使用することに
より、感度を一定に調整することができる。このため、
被検査配管の口径に応じて感度の調整を適切、かつ、容
易にすることができる。Even if the pipes to be inspected have different diameters, the sensitivity can be adjusted to a constant value by using the pipes having the same outer diameter and thickness as the pipes to be inspected. For this reason,
The sensitivity can be adjusted appropriately and easily according to the diameter of the pipe to be inspected.
【００１３】第２の部分は、円弧部分の内周面側に開口
径が異なる複数個の凹部を有しているから、開口径に応
じた校正が可能となる。このため、実際の測定データを
開口径に応じて適切、かつ、容易に校正でき、各種の欠
陥の大きさに対して欠陥検出性能を一定にすることがで
きる。Since the second portion has a plurality of concave portions having different opening diameters on the inner peripheral surface side of the arc portion, it is possible to calibrate according to the opening diameter. Therefore, the actual measurement data can be appropriately and easily calibrated according to the opening diameter, and the defect detection performance can be made constant with respect to various defect sizes.
【００１４】第１の部分は、円弧部分の内周面側に開口
径が異なる複数個の別の凹部を有しているから、感度の
調整及び欠陥の大きさの校正を同一試験片で行なうこと
ができる。例えば、別の凹部の深さを第１の部分の肉厚
の半分とし、第１の部分と第２の部分とが形成する段差
と同じくすると、別の凹部の深さから欠陥の深さが校正
され、別の凹部の開口径から欠陥の大きさが校正され、
被検査配管の劣化度の目安となる肉厚の半分の位置にお
ける欠陥の大きさを正確に測定できる。Since the first portion has a plurality of different concave portions having different opening diameters on the inner peripheral surface side of the arc portion, sensitivity adjustment and defect size calibration are performed on the same test piece. be able to. For example, if the depth of another recess is half the thickness of the first portion and is the same as the step formed by the first portion and the second portion, the depth of the defect can be changed from the depth of another recess. Calibrated, the size of the defect is calibrated from the opening diameter of another recess,
It is possible to accurately measure the size of a defect at a position half the wall thickness, which is a measure of the deterioration degree of the pipe to be inspected.
【００１５】[0015]
【実施例】図１は本発明に係る配管非破壊検査用標準試
験片の正面図、図２は同じく平面図、図３は図１のＣ３
ーＣ３線上断面図である。図示の標準試験片は、管用テ
ーパねじの結合部の腐食劣化を評価するために好適な試
験片を示している。以下、図４の配管非破壊検査方法の
測定状態を参照しながら図１〜図３を説明する。FIG. 1 is a front view of a standard test piece for pipe nondestructive inspection according to the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is C3 of FIG.
It is a cross-sectional view taken along the line C3. The standard test piece shown in the drawing shows a test piece suitable for evaluating the corrosion deterioration of the joint portion of the taper screw for a pipe. 1 to 3 will be described below with reference to the measurement state of the pipe nondestructive inspection method of FIG.
【００１６】図示の標準試験片１は、第１の部分１１
と、第２の部分１２とを含んでいる。第１の部分１１
は、円弧部分Ａが被検査配管３と同一の外径Ｒ１及び肉
厚Ｌ１となっている。第２の部分１２は、円弧部分Ｂの
外周面Ｂ１が第１の部分１１の外周面Ａ１の曲率と同一
曲率となっており、肉厚Ｌ２が第１の部分１１の肉厚Ｌ
１よりも薄くなっている。第２の部分１２の肉厚Ｌ２
は、検出したい欠陥の深さＬ３を最も精度よく校正でき
るように設定してある。第１の部分１１及び第２の部分
１２は、被試験配管３を軸方向に切断して短冊状として
もよく、径方向に切断して輪状としてもよい。標準試験
片１の材質は、被検査配管３と同一材質であることが最
も適切であるが、相関関係が明確であれば他の材質のも
のでもよい。校正精度を上げるには、肉厚の種類を増し
てやればよい。The illustrated standard test piece 1 includes a first portion 11
And a second portion 12. First part 11
The arc portion A has the same outer diameter R1 and wall thickness L1 as the pipe 3 to be inspected. In the second portion 12, the outer peripheral surface B1 of the arc portion B has the same curvature as the outer peripheral surface A1 of the first portion 11, and the wall thickness L2 is the wall thickness L of the first portion 11.
It is thinner than 1. Wall thickness L2 of the second portion 12
Is set so that the depth L3 of the defect to be detected can be calibrated with the highest accuracy. The first portion 11 and the second portion 12 may be formed by cutting the pipe 3 under test in the axial direction into a strip shape, or may be cut in the radial direction into a ring shape. The standard test piece 1 is most preferably made of the same material as the pipe 3 to be inspected, but may be made of another material as long as the correlation is clear. In order to improve the calibration accuracy, it is sufficient to increase the type of wall thickness.
【００１７】上述したように、第１の部分１１は円弧部
分Ａが被検査配管３と同一の外径Ｒ１となっており、第
２の部分１２は円弧部分Ｂの外周面Ｂ１が第１の部分１
１の外周面Ａ１の曲率と同一曲率となっているから、実
際の被検査配管３の測定状態と標準試験片１の測定状態
とが同一の関係となり、被検査配管３の測定と、標準試
験片１の測定とを対にして行ない両者を比較すると、感
度を一定の状態に保つことができる。As described above, the arc portion A of the first portion 11 has the same outer diameter R1 as the pipe 3 to be inspected, and the second portion 12 has the outer peripheral surface B1 of the arc portion B of the first portion 11. Part 1
Since the curvature is the same as the curvature of the outer peripheral surface A1 of No. 1, the actual measurement state of the pipe 3 to be inspected and the measurement state of the standard test piece 1 have the same relationship, and the measurement of the pipe 3 to be inspected and the standard test The sensitivity can be kept constant by comparing the measurement of piece 1 with that of the piece 1.
【００１８】第１の部分１１は円弧部分Ａが被検査配管
３と同一の肉厚Ｌ１となっており、第２の部分１２は、
円弧部分Ｂの肉厚Ｌ２が第１の部分１１の肉厚Ｌ１より
も薄くなっているから、第１の部分１１により被検査配
管３と同一の肉厚に対応した校正が可能となり、第２の
部分１２により被検査配管３より薄い肉厚、例えば欠陥
の深さに対応した校正が可能となる。このため、実際の
測定データを肉厚に応じて適切、かつ、容易に校正で
き、各種の欠陥の深さに対して欠陥検出性能を一定にす
ることができる。The arc portion A of the first portion 11 has the same wall thickness L1 as the pipe 3 to be inspected, and the second portion 12 is
Since the wall thickness L2 of the arc portion B is smaller than the wall thickness L1 of the first portion 11, the first portion 11 enables calibration corresponding to the same wall thickness as the pipe 3 to be inspected, and the second portion The portion 12 makes it possible to perform calibration corresponding to the thickness smaller than that of the pipe 3 to be inspected, for example, the depth of a defect. Therefore, the actual measurement data can be appropriately and easily calibrated according to the wall thickness, and the defect detection performance can be made constant with respect to various defect depths.
【００１９】また、被検査配管３の口径が異なっても、
被検査配管３と同一の外径Ｒ１及び肉厚Ｌ１のものを使
用することにより、感度を一定に調整することができ
る。このため、被検査配管３の口径に応じて感度の調整
を適切、かつ、容易にし得る非破壊検査用の標準試験片
を提供することができる。その結果、肉厚が６ミリ以下
の配管も適切に測定できる。更に、感度調整の頻度が減
少するため、ディレー材２１の摩耗も減少し、感度調整
回数は相乗的に減少する。Further, even if the pipe 3 to be inspected has a different diameter,
By using the pipe having the same outer diameter R1 and wall thickness L1 as the pipe 3 to be inspected, the sensitivity can be adjusted to be constant. Therefore, it is possible to provide a standard test piece for nondestructive inspection that can appropriately and easily adjust the sensitivity according to the diameter of the pipe 3 to be inspected. As a result, pipes with a wall thickness of 6 mm or less can be measured appropriately. Furthermore, since the frequency of sensitivity adjustment is reduced, the wear of the delay material 21 is also reduced, and the number of times of sensitivity adjustment is synergistically reduced.
【００２０】また、図示の標準試験片１は、第２の部分
１２の肉厚Ｌ２は、第１の部分１１の肉厚Ｌ１の半分で
ある。管用テーパねじの結合端部の谷の径は、一般に被
検査配管３の肉厚の略半分になる。このため、測定対象
の被検査配管３を測定し、標準試験片１により校正する
と、最も漏水しやすい位置の欠陥を高精度で検出でき
る。Further, in the illustrated standard test piece 1, the thickness L2 of the second portion 12 is half the thickness L1 of the first portion 11. The diameter of the valley at the coupling end of the pipe taper screw is generally about half the wall thickness of the pipe 3 to be inspected. Therefore, if the pipe 3 to be inspected, which is the object of measurement, is measured and calibrated with the standard test piece 1, the defect at the position where water is most likely to leak can be detected with high accuracy.
【００２１】更に、図示の標準試験片１は、第２の部分
１２が内周面側Ｂ２に開口径ｄ１〜ｄ３の凹部１２１〜
１２３を有している。凹部１２１〜１２３は、人工欠陥
であり、深さが同一の円形平底形状となっている。底面
は円弧状でもよい。超音波測定器は、発振周波数が５Ｍ
Ｈｚのものが一般に使用される。この発振周波数では検
出できる欠陥の大きさは一般に５ミリ以内である。開口
径ｄ１〜ｄ３は、５ミリ以内の範囲において検出したい
欠陥の大きさに合わせて設定すればよく、実施例は０．
４、０．５、０．６ミリに設定してある。このように、
第２の部分１２は、内周面側１２０に開口径ｄ１〜ｄ３
の凹部１２１〜１２３を有しているから、実際の測定デ
ータを開口径ｄ１〜ｄ３に応じて適切、かつ、容易に校
正でき、各種の欠陥の大きさに対して欠陥検出性能を一
定にすることができる。このため、測定対象の被検査配
管３を測定し、標準試験片１により校正すると、最も漏
水しやすい位置における欠陥の大きさを高精度で検出で
きる。Further, in the illustrated standard test piece 1, the second portion 12 has concave portions 121 to 121 having opening diameters d1 to d3 on the inner peripheral surface side B2.
It has 123. The recesses 121 to 123 are artificial defects and have a circular flat bottom shape with the same depth. The bottom surface may be arcuate. The ultrasonic measuring instrument has an oscillation frequency of 5M.
Those of Hz are commonly used. The size of the defect that can be detected at this oscillation frequency is generally within 5 mm. The opening diameters d1 to d3 may be set in accordance with the size of the defect to be detected within the range of 5 mm, and in the embodiment, it is set to 0.
It is set to 4, 0.5 and 0.6 mm. in this way,
The second portion 12 has opening diameters d1 to d3 on the inner peripheral surface side 120.
Since the concave portions 121 to 123 are included, actual measurement data can be appropriately and easily calibrated according to the opening diameters d1 to d3, and the defect detection performance can be made constant with respect to various defect sizes. be able to. Therefore, if the pipe 3 to be inspected, which is the object of measurement, is measured and calibrated with the standard test piece 1, the size of the defect at the position where water is most likely to leak can be detected with high accuracy.
【００２２】更にまた、図示の標準試験片１は、第１の
部分１１が内周面側Ａ２に開口径ｄ４〜ｄ６の別の凹部
１１１〜１１３を有している。開口径ｄ４〜ｄ６は、そ
れぞれ開口径ｄ１〜ｄ３に対応している。このように、
第１の部分１１は、内周面側１１０に開口径ｄ４〜ｄ６
の別の凹部１１１〜１１３を有しているから、感度の調
整及び欠陥の大きさの校正を同一試験片で行なうことが
できる。例えば、図示はしないが、別の凹部１１１〜１
１３の深さを第１の部分１１の肉厚Ｌ１の半分とし、第
１の部分１１と第２の部分１２とが形成する段差Ｌ３と
同じくすると、別の凹部１１１〜１１３の深さＬ３から
欠陥の深さが校正され、別の凹部１１１〜１１３の開口
径ｄ４〜ｄ６から欠陥の大きさが校正され、被検査配管
３の劣化度の目安となる肉厚Ｌ１の半分の位置における
欠陥の大きさを正確に測定できる。Furthermore, in the illustrated standard test piece 1, the first portion 11 has other concave portions 111 to 113 having opening diameters d4 to d6 on the inner peripheral surface side A2. The opening diameters d4 to d6 correspond to the opening diameters d1 to d3, respectively. in this way,
The first portion 11 has opening diameters d4 to d6 on the inner peripheral surface side 110.
Since the other concave portions 111 to 113 are provided, sensitivity adjustment and defect size calibration can be performed with the same test piece. For example, although not shown, the other recesses 111 to 1
If the depth of 13 is half the thickness L1 of the first portion 11 and is the same as the step L3 formed by the first portion 11 and the second portion 12, from the depth L3 of the other concave portions 111 to 113, The depth of the defect is calibrated, and the size of the defect is calibrated from the opening diameters d4 to d6 of the other recesses 111 to 113. The size can be measured accurately.
【００２３】また、凹部１２１〜１２３の深さを第２の
部分１２の厚みＬ２の半分に設定すると、被検査配管３
の劣化度の目安となる肉厚Ｌ１の半分よりも更に深い位
置における欠陥の大きさを正確に測定できる。If the depth of the recesses 121 to 123 is set to half the thickness L2 of the second portion 12, the pipe 3 to be inspected
It is possible to accurately measure the size of the defect at a position deeper than half of the wall thickness L1 which is a measure of the deterioration degree.
【００２４】図示の標準試験片１は、第１の部分１１及
び第２の部分１２が一体に形成されている。このため、
測定効率が向上するとともに、外乱の影響を受けにくく
なり、測定データの信頼性も向上する。In the illustrated standard test piece 1, a first portion 11 and a second portion 12 are integrally formed. For this reason,
The measurement efficiency is improved, the influence of external disturbance is reduced, and the reliability of the measurement data is improved.
【００２５】[0025]
【発明の効果】以上述べたように、本発明によれば、次
のような効果が得られる。 （ａ）被検査配管の口径に応じて感度の調整を適切、か
つ、容易にし得る配管非破壊検査用の標準試験片を提供
できる。 （ｂ）欠陥の大きさを校正し得る配管非破壊検査用の標
準試験片を提供できる。 （ｃ）感度の調整及び欠陥の大きさの校正を同一試験片
で行ない得る配管非破壊検査用の標準試験片を提供でき
る。As described above, according to the present invention, the following effects can be obtained. (A) It is possible to provide a standard test piece for pipe nondestructive inspection, which can appropriately and easily adjust the sensitivity according to the diameter of the pipe to be inspected. (B) A standard test piece for pipe nondestructive inspection capable of calibrating the size of defects can be provided. (C) It is possible to provide a standard test piece for pipe non-destructive inspection in which sensitivity adjustment and defect size calibration can be performed on the same test piece.
【図１】本発明に係る配管非破壊検査用標準試験片の正
面図である。FIG. 1 is a front view of a standard test piece for pipe nondestructive inspection according to the present invention.
【図２】本発明に係る配管非破壊検査用標準試験片の平
面図である。FIG. 2 is a plan view of a standard test piece for pipe nondestructive inspection according to the present invention.
【図３】図１のＣ３ーＣ３線上断面図である。3 is a cross-sectional view taken along the line C3-C3 of FIG.
【図４】超音波測定器を使用した配管非破壊検査方法の
測定状態を示す図である。FIG. 4 is a diagram showing a measurement state of a pipe nondestructive inspection method using an ultrasonic measuring device.
【図５】従来の配管非破壊検査用標準試験片の斜視図で
ある。FIG. 5 is a perspective view of a conventional standard test piece for pipe nondestructive inspection.
１ 配管断片 １１ 第１の部分 Ａ 円弧部分 Ａ１ 外周面 Ａ２ 内周面 １１１〜１１３ 別の凹部 １２ 第２の部分 Ｂ 円弧部分 Ｂ１ 外周面 Ｂ２ 内周面 １２１〜１２３ 凹部 ２ 探触子 ３ 被検査配管 Ｒ１ 外径 Ｌ１ 第１の部分の肉厚 Ｌ２ 第２の部分の肉厚 Ｌ３ 段差 DESCRIPTION OF SYMBOLS 1 Piping fragment 11 1st part A Arc part A1 Outer peripheral surface A2 Inner peripheral surface 111-113 Another concave part 12 2nd part B Arc part B1 Outer peripheral surface B2 Inner peripheral surface 121-123 Recessed part 2 Probe 3 Inspected Pipe R1 Outer diameter L1 Wall thickness of the first part L2 Wall thickness of the second part L3 Step
Claims (6)
非破壊検査用の標準試験片であって、 第１の部分及び第２の部分は円弧部分を含んでおり、前
記第１の部分は前記円弧部分が被検査配管と同一の外径
及び肉厚となっており、前記第２の部分は、前記円弧部
分の外周面が前記第１の部分の外周面の曲率と同一曲率
となり、肉厚が前記第１の部分の肉厚よりも薄くなって
いる配管非破壊検査用標準試験片。1. A standard test piece for pipe non-destructive inspection including a first portion and a second portion, wherein the first portion and the second portion include arc portions, and In the first portion, the circular arc portion has the same outer diameter and wall thickness as the pipe to be inspected, and in the second portion, the outer peripheral surface of the circular arc portion is the same as the curvature of the outer peripheral surface of the first portion. A standard test piece for pipe non-destructive inspection having a curvature and a wall thickness smaller than that of the first portion.
分の肉厚の半分である請求項１に記載の配管非破壊検査
用標準試験片。2. The standard test piece for pipe nondestructive inspection according to claim 1, wherein the second portion has a wall thickness that is half the wall thickness of the first portion.
面側に開口径が異なる複数個の凹部を有している請求項
１または２に記載の配管非破壊検査用標準試験片。3. The standard test piece for pipe nondestructive inspection according to claim 1, wherein the second portion has a plurality of recesses having different opening diameters on the inner peripheral surface side of the arc portion. .
面側に開口径が異なる複数個の別の凹部を有している請
求項１、２または３に記載の配管非破壊検査用標準試験
片。4. The pipe nondestructive inspection according to claim 1, 2 or 3, wherein the first portion has a plurality of different recesses having different opening diameters on the inner peripheral surface side of the arc portion. Standard test piece for.
厚の半分である請求項４に記載の配管非破壊検査用標準
試験片。5. The standard test piece for pipe non-destructive inspection according to claim 4, wherein the depth of the another recess is half the thickness of the first portion.
体に形成されている請求項１、２、３、４または５に記
載の配管非破壊検査用標準試験片。6. The standard test piece for pipe nondestructive inspection according to claim 1, 2, 3, 4, or 5, wherein the first portion and the second portion are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18196693A JP3413249B2 (en) | 1993-06-28 | 1993-06-28 | Standard specimen for non-destructive inspection of piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18196693A JP3413249B2 (en) | 1993-06-28 | 1993-06-28 | Standard specimen for non-destructive inspection of piping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0727750A true JPH0727750A (en) | 1995-01-31 |
| JP3413249B2 JP3413249B2 (en) | 2003-06-03 |
Family
ID=16109985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18196693A Expired - Fee Related JP3413249B2 (en) | 1993-06-28 | 1993-06-28 | Standard specimen for non-destructive inspection of piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3413249B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424816A (en) * | 2015-12-14 | 2016-03-23 | 华北电力科学研究院有限责任公司 | Sensitivity calibration platform for shaft type detection tools |
| CN106198762A (en) * | 2016-06-30 | 2016-12-07 | 中车戚墅堰机车车辆工艺研究所有限公司 | Low-floor tramcar wheel ultrasound detection sample block and method of testing thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472140B (en) * | 2013-09-05 | 2015-09-09 | 中国科学院声学研究所 | A kind of ultrasonic phased array imaging flaw detection intensity calibration method |
-
1993
- 1993-06-28 JP JP18196693A patent/JP3413249B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424816A (en) * | 2015-12-14 | 2016-03-23 | 华北电力科学研究院有限责任公司 | Sensitivity calibration platform for shaft type detection tools |
| CN105424816B (en) * | 2015-12-14 | 2019-08-23 | 华北电力科学研究院有限责任公司 | A kind of sensitivity calibration platform of Shaft testing tool |
| CN106198762A (en) * | 2016-06-30 | 2016-12-07 | 中车戚墅堰机车车辆工艺研究所有限公司 | Low-floor tramcar wheel ultrasound detection sample block and method of testing thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3413249B2 (en) | 2003-06-03 |
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