JP2006226979A - Flaw detection method - Google Patents

Flaw detection method Download PDF

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Publication number
JP2006226979A
JP2006226979A JP2005073874A JP2005073874A JP2006226979A JP 2006226979 A JP2006226979 A JP 2006226979A JP 2005073874 A JP2005073874 A JP 2005073874A JP 2005073874 A JP2005073874 A JP 2005073874A JP 2006226979 A JP2006226979 A JP 2006226979A
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JP
Japan
Prior art keywords
laser beam
detection method
flaw detection
inspected object
scratch
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
Application number
JP2005073874A
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Japanese (ja)
Inventor
Masatoshi Yonemura
雅俊 米村
Masakazu Yonemura
雅和 米村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2005073874A priority Critical patent/JP2006226979A/en
Publication of JP2006226979A publication Critical patent/JP2006226979A/en
Pending legal-status Critical Current

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  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To attain an automated inspection process capable of preventing missed detection by not depending on visual inspection but executing detection by an electronic sensor. <P>SOLUTION: A laser beam is emitted to an inspected object (tube) to receive a reflected beam, using a laser beam emitting element and a photoreception element, and the presence of a flaw in the inspected object is quickly determined by arithmetic processing in a control means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は材料の傷検査方法に関する。The present invention relates to a material flaw inspection method.

従来、材料に着いた傷の確認は目視検査で行っていた。Conventionally, the scratches on the material have been confirmed by visual inspection.

発明が解決しようとする課題Problems to be solved by the invention

しかしながら上記の技術によれば、信頼性が低い上に時間がかかり、検査工程の自動化ができない一因となっていた。そこでこの発明は、目視検査に頼らず電子的なセンサーで検知することにより、見逃しをなくし自動化した検査工程を可能とすることを課題とする。However, according to the above technique, the reliability is low and it takes time, which is one of the reasons that the inspection process cannot be automated. Accordingly, an object of the present invention is to eliminate an oversight and enable an automated inspection process by detecting with an electronic sensor without relying on visual inspection.

発明が解決しようとする課題Problems to be solved by the invention

上記の発明を解決するため請求項１の発明はレーザー発光素子、受光素子及びこれらに結合された制御手段からなる装置において、レーザー光を検査物体に照射し、反射光を受光し、その出力を前記、制御手段により演算処理して、検査物体の有無を速やかに行う。In order to solve the above-mentioned invention, the invention of claim 1 is an apparatus comprising a laser light emitting element, a light receiving element and control means coupled thereto, irradiating an inspection object with laser light, receiving reflected light, and outputting the output. The control means performs arithmetic processing to promptly detect the presence or absence of the inspection object.

発明を実施するための形態BEST MODE FOR CARRYING OUT THE INVENTION

第一発明の原理図を図１に示す。The principle diagram of the first invention is shown in FIG.

実施形態の効果Effects of the embodiment

第一発明により材料に傷があった場合、レーザー素子により照射されたレーザー光は材料の傷に当たると、反射光は通常より別の角度で受光素子に検知される。これにより目視検査に頼らなくとも、管についた傷を効果的に検知できるようになった。When there is a scratch on the material according to the first invention, when the laser beam irradiated by the laser element hits the scratch on the material, the reflected light is detected by the light receiving element at a different angle than usual. This makes it possible to effectively detect scratches on the tube without relying on visual inspection.

第一発明の実施形態は図１である。
この実施例では材料として管を想定している。FIG. 1 shows an embodiment of the first invention.
In this embodiment, a pipe is assumed as a material.

符号の簡単な説明Brief description of symbols

レーザー発光素子・・・ＬＳ
レーザー光・・・・・・・・・Ｌ
受光素子・・・・・・・・・・ＲＳ
反射光・・・・・・・・・・・・・Ｒ
レーザーによって
照射された地点・・・・・・Ｃ
管に傷が無い時の
反射光の角度・・・・・・・Ａ
管に傷がある時の
反射光の角度・・・・・・・ＢLaser light emitting element LS
Laser light ... L
Light receiving element RS
Reflected light ... R
Point irradiated by laser ... C
Angle of reflected light when there is no scratch on the tube ... A
Angle of reflected light when there is a scratch on the tube ... B

Claims (1)

この発明は、材料に着いた傷にレーザー光を照射し、傷の有無によるレーザー光の反射が異なる事を利用して傷の有無を検知することを特徴とする検知方法。  The present invention is a detection method characterized by irradiating a wound on a material with a laser beam and detecting the presence or absence of a scratch using the fact that the reflection of the laser beam differs depending on the presence or absence of the scratch.
JP2005073874A 2005-02-16 2005-02-16 Flaw detection method Pending JP2006226979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005073874A JP2006226979A (en) 2005-02-16 2005-02-16 Flaw detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005073874A JP2006226979A (en) 2005-02-16 2005-02-16 Flaw detection method

Publications (1)

Publication Number Publication Date
JP2006226979A true JP2006226979A (en) 2006-08-31

Family

ID=36988465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005073874A Pending JP2006226979A (en) 2005-02-16 2005-02-16 Flaw detection method

Country Status (1)

Country Link
JP (1) JP2006226979A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104048813A (en) * 2014-05-27 2014-09-17 中国人民解放军总参谋部第五十四研究所 Method and device for recording laser damage process of optical element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104048813A (en) * 2014-05-27 2014-09-17 中国人民解放军总参谋部第五十四研究所 Method and device for recording laser damage process of optical element

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