JP2018205033A5 - - Google Patents
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- JP2018205033A5 JP2018205033A5 JP2017108378A JP2017108378A JP2018205033A5 JP 2018205033 A5 JP2018205033 A5 JP 2018205033A5 JP 2017108378 A JP2017108378 A JP 2017108378A JP 2017108378 A JP2017108378 A JP 2017108378A JP 2018205033 A5 JP2018205033 A5 JP 2018205033A5
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- inspection object
- reflected
- signal
- reflection
- internal defect
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- 238000007689 inspection Methods 0.000 claims 50
- 238000004458 analytical method Methods 0.000 claims 4
- 238000001228 spectrum Methods 0.000 claims 4
- 238000001953 recrystallisation Methods 0.000 claims 3
- 230000000875 corresponding Effects 0.000 claims 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 2
- 230000003595 spectral Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 210000001519 tissues Anatomy 0.000 claims 1
Claims (13)
超音波信号が照射された前記検査対象物から反射される反射信号を取得する反射信号取得ステップと、
前記反射信号を周波数毎のスペクトル信号に分解した解析信号を生成する解析信号生成ステップと、
前記解析信号に含まれる周波数毎のスペクトル信号の数に基づき、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであるか、前記検査対象物の内部の再結晶組織から反射されたものであるかを判定する欠陥判定ステップと、
を有する、検査対象物の内部欠陥の検出方法。 A method of detecting an internal defect of an inspection object,
A reflection signal acquisition step of acquiring a reflection signal reflected from the inspection object irradiated with the ultrasonic signal,
An analytic signal generation step for generating an analytic signal by decomposing the reflected signal into spectrum signals for each frequency,
Based on the number of spectral signals of each frequency included in the analysis signal, the reflected signal, or those reflected from the inner defect of the inspection object is reflected from the recrystallization structure of the interior of the test object A defect determination step for determining whether the
A method for detecting an internal defect of an inspection object, comprising:
前記解析信号に含まれる周波数毎のスペクトル信号の数が、所定の閾値より少ない場合に、その解析信号に対応する反射信号が、前記検査対象物の内部欠陥から反射されたものであると判定し、
前記解析信号に含まれる周波数毎のスペクトル信号の数が、前記所定の閾値以上である場合に、その解析信号に対応する反射信号が、前記検査対象物の再結晶組織から反射されたものであると判定する、請求項１に記載の検査対象物の内部欠陥の検出方法。 In the previous Symbol defect determination step,
When the number of spectrum signals for each frequency included in the analysis signal is less than a predetermined threshold value, the reflection signal corresponding to the analysis signal is determined to be reflected from the internal defect of the inspection object. ,
When the number of spectrum signals for each frequency included in the analytic signal is equal to or more than the predetermined threshold value, a reflection signal corresponding to the analytic signal is one reflected from the recrystallized structure of the inspection object. The method for detecting an internal defect of an inspection object according to claim 1, wherein
前記欠陥判定ステップにおいて、箇所毎の前記反射信号同士の強度比にも基づき、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであるか、前記検査対象物の内部の再結晶組織から反射されたものであるかを判定する、請求項１又は請求項２に記載の検査対象物の内部欠陥の検出方法。 In the reflection signal acquisition step, to acquire the reflection signal detected from a plurality of locations having different positions,
In the defect determination step, based on the intensity ratio of the reflection signals for each location, the reflection signal is reflected from an internal defect of the inspection object, or recrystallization inside the inspection object. The method for detecting an internal defect of an inspection object according to claim 1, wherein it is determined whether or not it is reflected from a tissue.
前記欠陥判定ステップにおいて、前記反射信号の強度が所定値以上となる前記反射信号の周波数の値である応答周波数にも基づき、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであるか、前記検査対象物の内部の再結晶組織から反射されたものであるかを判定する、請求項１から請求項３のいずれか１項に記載の検査対象物の内部欠陥の検出方法。 In the reflection signal acquisition step, to acquire the reflection signal of the ultrasonic signal emitted by changing the frequency,
In the defect determination step, based on the response frequency that is the value of the frequency of the reflected signal at which the intensity of the reflected signal is a predetermined value or more, the reflected signal is reflected from an internal defect of the inspection object. The method for detecting an internal defect of an inspection object according to any one of claims 1 to 3, wherein it is determined whether or not it is reflected from a recrystallized structure inside the inspection object.
超音波信号が照射された前記検査対象物から反射される反射信号であって、互いに位置が異なる複数の箇所から検出した前記反射信号を取得する反射信号取得ステップと、
箇所毎の前記反射信号同士の強度比に基づき、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであるか、前記検査対象物の内部の再結晶組織から反射されたものであるかを判定する欠陥判定ステップと、
を有する、検査対象物の内部欠陥の検出方法。 A method of detecting an internal defect of an inspection object,
A reflection signal is a reflection signal reflected from the inspection object irradiated with an ultrasonic signal, and a reflection signal acquisition step of acquiring the reflection signal detected from a plurality of mutually different positions,
Based on the intensity ratio of the reflection signals for each location, the reflection signal is one that is reflected from the internal defect of the inspection object, or one that is reflected from the recrystallized structure inside the inspection object. A defect determination step of determining whether there is,
A method for detecting an internal defect of an inspection object, comprising:
箇所毎の前記反射信号同士の強度比が、所定の強度比閾値の範囲外である場合に、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであると判定し、
箇所毎の前記反射信号同士の強度比が、前記所定の強度比閾値の範囲内である場合に、前記反射信号が、前記検査対象物の再結晶組織から反射されたものであると判定する、請求項５に記載の検査対象物の内部欠陥の検出方法。 In the defect determination step,
Intensity ratio of the reflection signals for each location, when the intensity ratio is outside the range of a predetermined intensity ratio threshold, the reflection signal is determined to be reflected from the internal defect of the inspection object,
When the intensity ratio of the reflection signals for each location is within the range of the predetermined intensity ratio threshold, the reflection signal is determined to be reflected from the recrystallized structure of the inspection object, The method for detecting an internal defect of an inspection object according to claim 5.
前記欠陥判定ステップにおいて、前記反射信号の強度が所定値以上となる前記反射信号の周波数の値である応答周波数にも基づき、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであるか、前記検査対象物の内部の再結晶組織から反射されたものであるかを判定する、請求項５又は請求項６に記載の検査対象物の内部欠陥の検出方法。 In the reflection signal acquisition step, to acquire the reflection signal of the ultrasonic signal emitted by changing the frequency,
In the defect determination step, based on the response frequency that is the value of the frequency of the reflected signal at which the intensity of the reflected signal is a predetermined value or more, the reflected signal is reflected from an internal defect of the inspection object. The method for detecting an internal defect of an inspection object according to claim 5 or 6, wherein it is determined whether or not it is reflected from a recrystallized structure inside the inspection object.
前記検査対象物に周波数を変化させて照射された超音波信号に対して、前記検査対象物から反射される反射信号を取得する反射信号取得ステップと、
前記反射信号の強度が所定値以上となる前記反射信号の周波数の値である応答周波数に基づき、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであるか、前記検査対象物の内部の再結晶組織から反射されたものであるかを判定する欠陥判定ステップと、
を有する、検査対象物の内部欠陥の検出方法。 A method of detecting an internal defect of an inspection object,
A reflection signal acquisition step of acquiring a reflection signal reflected from the inspection object, with respect to the ultrasonic signal emitted by changing the frequency of the inspection object,
Based on the response frequency, which is the value of the frequency of the reflected signal at which the intensity of the reflected signal is a predetermined value or more, the reflected signal is reflected from an internal defect of the inspection object, or the inspection object A defect determination step of determining whether it is reflected from the recrystallized structure inside the
A method for detecting an internal defect of an inspection object, comprising:
前記応答周波数が所定の周波数閾値より小さい場合に、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであると判定し、
前記応答周波数が前記所定の周波数閾値以上である場合に、前記反射信号が、前記検査対象物の再結晶組織から反射されたものであると判定する、請求項８に記載の検査対象物の内部欠陥の検出方法。 In the defect determination step,
If the response frequency is less than a predetermined frequency threshold, the reflected signal is determined to be reflected from an internal defect of the inspection object,
The inside of the inspection object according to claim 8, wherein when the response frequency is equal to or higher than the predetermined frequency threshold value, the reflection signal is determined to be reflected from the recrystallized structure of the inspection object. Defect detection method.
超音波信号が照射された前記検査対象物から反射される反射信号を取得する反射信号取得部と、
前記反射信号を周波数毎のスペクトル信号に分解した解析信号を生成する解析信号生成部と、
前記解析信号に含まれる周波数毎のスペクトル信号の数に基づき、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであるか、前記検査対象物の内部の再結晶組織から反射されたものであるかを判定する欠陥判定部と、
を有する、検査対象物の内部欠陥の検出装置。 A device for detecting an internal defect of an inspection object,
A reflection signal acquisition unit for acquiring a reflection signal reflected from the inspection object irradiated with the ultrasonic signal,
An analytic signal generation unit that generates an analytic signal by decomposing the reflected signal into spectrum signals for each frequency,
Based on the number of spectral signals of each frequency included in the analysis signal, the reflected signal, or those reflected from the inner defect of the inspection object is reflected from the recrystallization structure of the interior of the test object A defect determination unit that determines whether the
A device for detecting an internal defect of an inspection object, which has:
超音波信号が照射された前記検査対象物から反射される反射信号であって、互いに位置が異なる複数の箇所から検出した前記反射信号を取得する反射信号取得部と、
箇所毎の前記反射信号同士の強度比に基づき、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであるか、前記検査対象物の内部の再結晶組織から反射されたものであるかを判定する欠陥判定部と、
を有する、検査対象物の内部欠陥の検出装置。 A device for detecting an internal defect of an inspection object,
A reflection signal acquisition unit that acquires the reflection signals detected from a plurality of locations that are different from each other, which are reflection signals reflected from the inspection object irradiated with the ultrasonic signal,
Based on the intensity ratio of the reflection signals for each location, the reflection signal is one that is reflected from the internal defect of the inspection object, or one that is reflected from the recrystallized structure inside the inspection object. A defect determination unit that determines whether there is
A device for detecting an internal defect of an inspection object, which has:
前記検査対象物に周波数を変化させて照射された超音波信号に対して、前記検査対象物から反射される反射信号を取得する反射信号取得部と、
前記反射信号の強度が所定値以上となる前記反射信号の周波数の値である応答周波数に基づき、前記反射信号が、前記検査対象物の内部欠陥から反射されたものであるか、前記検査対象物の内部の再結晶組織から反射されたものであるかを判定する欠陥判定部と、
を有する、検査対象物の内部欠陥の検出装置。
A device for detecting an internal defect of an inspection object,
A reflection signal acquisition unit that acquires a reflection signal reflected from the inspection object, with respect to the ultrasonic signal emitted by changing the frequency of the inspection object,
Based on the response frequency, which is the value of the frequency of the reflected signal at which the intensity of the reflected signal is a predetermined value or more, the reflected signal is reflected from an internal defect of the inspection object, or the inspection object A defect determination unit that determines whether or not it is reflected from the recrystallized structure inside the
A device for detecting an internal defect of an inspection object, which has:
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| JP2017108378A JP6990046B2 (en) | 2017-05-31 | 2017-05-31 | Detection method and detection device for internal defects of inspection objects |
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| JP2017108378A JP6990046B2 (en) | 2017-05-31 | 2017-05-31 | Detection method and detection device for internal defects of inspection objects |
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| JP2018205033A JP2018205033A (en) | 2018-12-27 |
| JP2018205033A5 true JP2018205033A5 (en) | 2020-07-02 |
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| CN113728227A (en) * | 2019-04-17 | 2021-11-30 | Dmc全球公司 | Method and system for identifying bond boundaries between sound bonds and weak bonds in a multi-layer article |
| JP7252918B2 (en) * | 2020-04-14 | 2023-04-05 | 三菱重工業株式会社 | Soft tissue detection method |
| CN116401496B (en) * | 2023-06-08 | 2023-08-18 | 广东普蓝地理信息服务有限公司 | Method, device, equipment and medium for detecting internal defect information of water supply and drainage pipeline |
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| JPS6093955A (en) * | 1983-10-28 | 1985-05-25 | Hitachi Ltd | Ultrasonic inspection apparatus |
| JPS6125057A (en) * | 1984-07-13 | 1986-02-03 | Kobe Steel Ltd | Ultrasonic flaw detection of tube |
| US4699007A (en) * | 1984-07-13 | 1987-10-13 | Kabushiki Kaisha Kobe Seiko Sho | Method of and apparatus for ultrasonic flaw detection |
| JP2961833B2 (en) * | 1990-08-13 | 1999-10-12 | 石川島播磨重工業株式会社 | Grain size measurement method |
| JPH06337262A (en) * | 1993-05-28 | 1994-12-06 | Sumitomo Metal Ind Ltd | Method and equipment for ultrasonic flaw detection |
| JP2001343370A (en) | 2000-06-06 | 2001-12-14 | Mitsubishi Heavy Ind Ltd | Ultrasonic inspection method |
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