JPH01223341A - Manufacture of reference test object for non-destructive inspection - Google Patents
Manufacture of reference test object for non-destructive inspectionInfo
- Publication number
- JPH01223341A JPH01223341A JP63051243A JP5124388A JPH01223341A JP H01223341 A JPH01223341 A JP H01223341A JP 63051243 A JP63051243 A JP 63051243A JP 5124388 A JP5124388 A JP 5124388A JP H01223341 A JPH01223341 A JP H01223341A
- Authority
- JP
- Japan
- Prior art keywords
- defect
- molten metal
- melting point
- simulation body
- shape
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 title abstract description 30
- 238000007689 inspection Methods 0.000 title description 6
- 230000001066 destructive effect Effects 0.000 title description 2
- 230000007547 defect Effects 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 12
- 230000008018 melting Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 16
- 238000009659 non-destructive testing Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 abstract description 6
- 238000005266 casting Methods 0.000 abstract description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910010271 silicon carbide Inorganic materials 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract 7
- 238000000465 moulding Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 1
- 239000011225 non-oxide ceramic Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
- 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）
この発明は超音波探傷等の非破壊検査に使用する標準試
験体の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a standard test specimen used in non-destructive testing such as ultrasonic flaw detection.
（従来の技術及びその問題点）
鋳物や溶接部に内在する各種欠陥を検出するための非破
壊検査法としては、超音波探傷法や放射線透過試験法が
周知であるが、これら検査法においては、欠陥の存在を
検出するのみならず、検出された欠陥の形状や寸法をも
特定することが要求されている。しかしながら、上記各
検査法において、欠陥の形状や寸法に関連して得られる
出力値、例えば超音波探傷法において得られる反射エコ
ーの大きさ、反射エコーの存在領域幅等は、内在する欠
陥の形状、寸法等に応じて変化するものの、さらに被検
査部の寸法や材質等によっても大きく変化し、そのため
上記各非破壊検査法によって、欠陥の形状や寸法を正確
には把握し難いのが実情である。(Prior art and its problems) Ultrasonic flaw detection and radiographic testing are well known as non-destructive testing methods for detecting various defects inherent in castings and welded parts. , it is required not only to detect the presence of defects, but also to specify the shape and dimensions of the detected defects. However, in each of the above inspection methods, the output value obtained in relation to the shape and size of the defect, such as the size of the reflected echo obtained in ultrasonic flaw detection, the width of the area where the reflected echo exists, etc. Although it changes depending on the size, etc., it also changes greatly depending on the size and material of the part to be inspected, so the reality is that it is difficult to accurately grasp the shape and size of the defect using each of the above non-destructive inspection methods. be.
そこでこの対策として、被検査部と同寸法、同材質で、
かつ内部に各種欠陥を内在させた標準試験体を準備して
おき、得られた検査データと上記標準試験体でのデータ
とを比較し、これから実際の欠陥の形状や寸法を推定す
る方法を採用することが考えられる。ところでこの場合
、標準試験体においては、既知の形状及び寸法の欠陥を
内在させておく必要がある訳であるが、現在のところ、
この種の試験体を正確に製造し得る有効な方法が開発さ
れておらず、上記のような標準試験体を利用した検査法
も実用に供せられていない状態である。Therefore, as a countermeasure to this problem, a
In addition, a method is adopted in which standard test specimens with various internal defects are prepared, the obtained inspection data is compared with the data from the standard test specimen, and the shape and dimensions of the actual defects are estimated from this. It is possible to do so. By the way, in this case, it is necessary to include defects of known shape and size in the standard test specimen, but at present,
No effective method for accurately manufacturing this type of test specimen has been developed, and testing methods using the above-mentioned standard test specimen have not yet been put to practical use.
この発明は上記した従来の問題点を解決するためになさ
れたものであって、その目的は、上記のような既知の形
状、寸法の欠陥を内在させた標準試験体を、精度良く、
しかも高能率に製造することのできる非破壊検査用標準
試験体の製造方法を提供することにある。This invention was made in order to solve the above-mentioned conventional problems, and its purpose is to accurately test a standard test specimen containing defects of known shape and size as described above.
Moreover, it is an object of the present invention to provide a method for manufacturing a standard test specimen for non-destructive testing, which can be manufactured with high efficiency.
（問題点を解決するための手段）
そこで第１請求項記載の非破壊検査用標準試験体の製造
方法においては、欠陥を模擬した形状、寸法の欠陥模擬
体を製作し、この模擬体よりも低融点の溶湯中に上記欠
陥模擬体を埋設し、この状態で溶湯を凝固させることを
特徴としている。(Means for Solving the Problem) Therefore, in the method for manufacturing a standard test specimen for non-destructive testing as described in the first claim, a defect simulator having a shape and dimensions simulating the defect is manufactured, and The method is characterized in that the defect simulator is buried in a molten metal having a low melting point, and the molten metal is solidified in this state.
またこの場合、欠陥模擬体が、熱膨張の小さい、炭化物
、ホウ化物、窒化物等の非酸化物系セラミックスであり
、上記溶湯が鋼の溶湯であるのが好ましいが、特にこれ
ら材質に限定される訳ではない。In this case, it is preferable that the defect simulator is a non-oxide ceramic such as a carbide, a boride, or a nitride with low thermal expansion, and that the molten metal is a molten steel, but it is not limited to these materials. That doesn't mean it's true.
（作用）
上記によれば、既知の形状、寸法の欠陥模擬体を、はと
んどそのままの状態で標準試験体に内在させることが可
能となるので、精度の良い試験体が得られることになる
。しかもこの場合、特に複雑な製造プロセースを必要と
する訳でもないので、その製造作業は容易なものとなる
。(Function) According to the above, it is possible to incorporate a defect simulator of known shape and size into the standard test specimen in almost the same state, so that a highly accurate test specimen can be obtained. Become. Moreover, in this case, a particularly complicated manufacturing process is not required, so the manufacturing operation becomes easy.
（実施例）
次にこの発明の非破壊検査用標準試験体の製造方法の具
体的な実施例について、図面を参照しつつ詳細に説明す
る。(Example) Next, a specific example of the method for manufacturing a standard specimen for non-destructive testing of the present invention will be described in detail with reference to the drawings.
まず第１図（ａ）（ｂ）に示すように、高融点かつ熱膨
張係数の小さい材料で、欠陥を模擬した形状及び寸法の
欠陥模擬体１を成形、加工する。このような欠陥模擬体
１の構成材料としては、例えば高密度炭化ケイ素５ｉＣ
（融点２７００″Ｃ以上、熱膨張率４、ＯＸｌ０−’／
”Ｃ）や窒化ケイ素５ｉＪＬ （融点約１９００℃、
熱膨張率２．７５Ｘ１０−”／”Ｃ）を挙げることがで
きる。First, as shown in FIGS. 1(a) and 1(b), a defect simulating body 1 having a shape and dimensions simulating a defect is molded and processed using a material having a high melting point and a small coefficient of thermal expansion. As a constituent material of such a defect simulator 1, for example, high-density silicon carbide 5iC
(Melting point 2700″C or higher, thermal expansion coefficient 4, OXl0-′/
”C) and silicon nitride 5iJL (melting point approximately 1900℃,
Thermal expansion coefficient is 2.75×10-”/”C).
次いで第２図に示すように、任意形状の鋳型２中の適当
な位置に、上記欠陥模擬体ｌを配置し、この状態で鋳型
２中に金属溶湯３を注湯する。この場合、溶湯３として
は、上記欠陥模擬体１よりも融点の低いもの、例えばｔ
！Ｒ（融点約１５３９℃）の溶湯を用いる。Next, as shown in FIG. 2, the defect simulator 1 is placed at an appropriate position in a mold 2 having an arbitrary shape, and molten metal 3 is poured into the mold 2 in this state. In this case, the molten metal 3 has a melting point lower than that of the defect simulator 1, for example, t
! A molten metal of R (melting point: about 1539°C) is used.
そして上記のように欠陥模擬体１を内在させたまま溶湯
３を凝固させ、鋳型２から取出して（第３図）、これを
そのまま、あるいは適当な後加工を施して標準試験体４
として使用する。なお必要に応じて、第４図に示すよう
に別部材５を使用し、これを固相接合等の方法にて上記
標準試験体４に接合し、これら全体を試験体として利用
することもある。Then, as described above, the molten metal 3 is solidified with the defect simulator 1 contained therein, taken out from the mold 2 (Fig. 3), and used as it is or after suitable post-processing to form the standard test specimen 4.
Use as. If necessary, a separate member 5 may be used as shown in Fig. 4, and this may be joined to the standard test specimen 4 by a method such as solid-phase bonding, and the whole may be used as a test specimen. .
以上にこの発明の非破壊検査用標準試験体の製造方法の
実施例の説明をしたが、上記実施例によれば、次のよう
な利点が生ずることになる。まず第１には、任意の形状
、寸法の欠陥模擬体１を精度良く内在させた標準試験体
４が得られ、そのためこの試験体４を利用した各種検査
が精度良く行えるということである。また第２には、鋳
型２を所望形状に加工しておけば、それだけで所望形状
の試験体４が得られ、しかも拡散接合等の特別のプロセ
スを必ずしも要する訳ではないから、試験体４を容易に
、かつ高能率に製造し得るということである。さらに、
平面状欠陥、線状欠陥、球状欠陥等、あらゆる形状の欠
陥を模擬し得るという利点も生ずることになる。The embodiments of the method for manufacturing a standard test specimen for non-destructive testing according to the present invention have been described above, and the embodiments described above provide the following advantages. First, it is possible to obtain a standard test specimen 4 in which a defect simulator 1 of arbitrary shape and size is incorporated with high precision, and therefore various inspections using this test specimen 4 can be performed with high precision. Secondly, if the mold 2 is processed into the desired shape, the test specimen 4 of the desired shape can be obtained by simply processing the mold 2, and a special process such as diffusion bonding is not necessarily required. This means that it can be manufactured easily and with high efficiency. moreover,
Another advantage is that defects of all shapes, such as planar defects, linear defects, and spherical defects, can be simulated.
（発明の効果）
この発明の非破壊検査用標準試験体の製造方法によれば
、既知の形状、寸法の欠陥模擬体を、はとんどそのまま
の状態で標準試験体に内在させることが可能となり、そ
のため精度の良い試験体が得られ、これにより各種検査
精度を向上することが可能となる。しかも特に複雑な製
造プロセスが必要とされる訳ではないので、その製造作
業を容易に高能率に行うことが可能となる。(Effects of the Invention) According to the method for manufacturing a standard test specimen for non-destructive testing of the present invention, it is possible to incorporate a defect simulator of known shape and size into the standard test specimen almost as is. Therefore, a highly accurate test specimen can be obtained, thereby making it possible to improve the accuracy of various inspections. Furthermore, since a particularly complicated manufacturing process is not required, the manufacturing operation can be carried out easily and with high efficiency.
第１図ないし第４図はこの発明の非破壊検査用標準試験
体の製造方法の一例の説明図で、第１図（ａ）は欠陥模
擬体を平面から見た説明図、同図ら）は正面から見た説
明図、第２図は鋳込み作業の説明図、第３図は標準試験
体の説明図、第４図は標準試験体の他の使用例の説明図
である。
１・・・欠陥模擬体、２・・・鋳型、３・・・溶湯、４
・・・標準試験体。
特許出願人 川崎重工業株式会社（。、
〈：≦１1 to 4 are explanatory diagrams of an example of the method for manufacturing a standard test specimen for nondestructive testing of the present invention, and FIG. FIG. 2 is an explanatory diagram of the casting operation, FIG. 3 is an explanatory diagram of the standard test specimen, and FIG. 4 is an explanatory diagram of another usage example of the standard specimen. 1... Defect simulator, 2... Mold, 3... Molten metal, 4
...Standard test specimen. Patent applicant: Kawasaki Heavy Industries, Ltd. (.
〈：≦1
Claims (1)
この模擬体よりも低融点の溶湯中に上記欠陥模擬体を埋
設し、この状態で溶湯を凝固させることを特徴とする非
破壊検査用標準試験体の製造方法。1. Fabricate a defect simulator with a shape and size that simulates the defect,
A method for manufacturing a standard specimen for non-destructive testing, comprising embedding the defect simulator in a molten metal having a melting point lower than that of the simulator, and solidifying the molten metal in this state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63051243A JPH01223341A (en) | 1988-03-03 | 1988-03-03 | Manufacture of reference test object for non-destructive inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63051243A JPH01223341A (en) | 1988-03-03 | 1988-03-03 | Manufacture of reference test object for non-destructive inspection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01223341A true JPH01223341A (en) | 1989-09-06 |
Family
ID=12881508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63051243A Pending JPH01223341A (en) | 1988-03-03 | 1988-03-03 | Manufacture of reference test object for non-destructive inspection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01223341A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007057414A (en) * | 2005-08-25 | 2007-03-08 | Sumitomo Metal Ind Ltd | Test piece for sensitivity calibration of ultrasonic testing, and its manufacturing method |
| JP2012220386A (en) * | 2011-04-12 | 2012-11-12 | Ihi Inspection & Instrumentation Co Ltd | Method of producing welding test piece for non-destructive test |
| CN105572229A (en) * | 2014-10-15 | 2016-05-11 | 空中客车运营简化股份公司 | Method and assembly for verifying the calibration of a system for non-destructive testing of workpieces |
| JP2021043106A (en) * | 2019-09-12 | 2021-03-18 | 三菱重工業株式会社 | Radiographic test simulation member, radiographic test simulation image generation method, radiographic test device, radiographic test procedure evaluation method, radiographic test procedure selection method, radiographic test data evaluation method, and radiographic test learning data generation method |
-
1988
- 1988-03-03 JP JP63051243A patent/JPH01223341A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007057414A (en) * | 2005-08-25 | 2007-03-08 | Sumitomo Metal Ind Ltd | Test piece for sensitivity calibration of ultrasonic testing, and its manufacturing method |
| JP2012220386A (en) * | 2011-04-12 | 2012-11-12 | Ihi Inspection & Instrumentation Co Ltd | Method of producing welding test piece for non-destructive test |
| CN105572229A (en) * | 2014-10-15 | 2016-05-11 | 空中客车运营简化股份公司 | Method and assembly for verifying the calibration of a system for non-destructive testing of workpieces |
| JP2021043106A (en) * | 2019-09-12 | 2021-03-18 | 三菱重工業株式会社 | Radiographic test simulation member, radiographic test simulation image generation method, radiographic test device, radiographic test procedure evaluation method, radiographic test procedure selection method, radiographic test data evaluation method, and radiographic test learning data generation method |
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