第12回
AE センサを用いたメカニカルアンカの非破壊検査技術の開発
著者:
匂坂 充行,Mitsuyuki SAGISAKA,松永 嵩,Takashi MATSUNAGA,小川 良太,Ryota OGAWA,鵜飼 康史,Yasufumi UKAI,礒部 仁博,Yoshihiro ISOBE
発刊日:
公開日:
キーワードタグ:
A new non-destructive inspection technique with using acoustic emission (AE) sensor was developed for the purpose of overcoming problems originating in existing hammering test. The new technique enables us to obtain inspection results with no dependence on personal skills of a checker, and to judge the integrity of the bolts based on quantitative measurement results. The investigation of applying the new method to mechanical anchor bolts is reported. From experimental results by using this technique, ...
英字タイトル:
Development of non-destructive inspection technique for mechanical anchor bolts using AE sensor
第12回
AE センサを用いた鋼棒、鋼管の健全性評価技術の開発 (1) 実験的検討
著者:
松永 嵩,Takashi MATSUNAGA,小川 良太,Ryota Ogawa,匂坂 充行,Mitsuyuki SAGISAKA,鵜飼 康史,Yasufumi UKAI,礒部 仁博,Yoshihiro ISOBE“,
発刊日:
公開日:
キーワードタグ:
1.緒言 原子力発電所では、多数の基礎ボルトや配管が用いられている。これらの基礎ボルトや配管などの鋼棒、鋼管は、周辺環境(設置場所や内部流体、機械振動など)により経年劣化(腐食、摩耗、き裂など)が発生する可能性が潜在している1-2。従って、機器・構造物の安全性・信頼性を確保する観点より、鋼棒、鋼管の経年劣化を検出する非破壊検査技術が望まれている。 このような鋼棒、鋼管の健全性を検査する手法として、一般的には、目視検査や打音検査、超音波検査が採用されている3-7。しかしながら、目視検査では、たとえば基礎ボル......
英字タイトル:
Development of a new inspection system for steel rod and pipe using AE sensor (1) Experimental approach
第12回
AE センサを用いた鋼棒、鋼管の健全性評価技術の開発 (2) 理論的検討
著者:
小川 良太,Ryota OGAWA,松永 嵩,Takashi MATSUNAGA,匂坂 充行,Mitsuyuki SAGISAKA,鵜飼 康史,Yasufumi UKAI,礒部 仁博,Yoshihiro ISOBE
発刊日:
公開日:
キーワードタグ:
A new inspection technique using AE (acoustic emission) sensor has been developed for the purpose of evaluating the integrity of steel rods and pipes, and sensitivity analyses were made for degradations of steel rods and pipes from a theoretical viewpoint. The Eigen frequency and modal frequency response analysis were conducted based on FEM (finite element method). Several peaks due to natural vibrations were observed in the frequency distribution calculated in this study, and comparisons with experi...
英字タイトル:
Development of a new inspection system for steel rod and pipe using AE sensor (2) Theoretical approach
第13回
AEセンサを用いたメカニカルアンカの非破壊検査技術の開発 2
著者:
匂坂 充行,Mitsuyuki SAGISAKA,松永 嵩,Takashi MATSUNAGA,小川 良太,Ryota OGAWA,鵜飼 康史,Yasufumi UKAI,礒部 仁博,Yoshihiro ISOBE
発刊日:
公開日:
キーワードタグ:
A new non-destructive inspection technique with using acoustic emission (AE) sensor for mechanical anchor bolt was developed for the purpose of overcoming problems originating in existing hammering test. The new technique enables us to obtain inspection results with little dependence on personal skills of a checker, and to judge the integrity of the bolts based on quantitative measurement results. The detectability to crack width on concrete was reported. From experimental results by using this techni...
英字タイトル:
Development of non-destructive inspection technique for mechanical anchor bolts using AE sensor 2
第13回
AEセンサを用いた鋼棒、鋼管の健全性評価技術の開発 2 (2) 理論的検討
著者:
小川 良太,Ryota OGAWA,松永 嵩,Takashi MATSUNAGA,匂坂 充行,Mitsuyuki SAGISAKA,鵜飼 康史,Yasufumi UKAI,礒部 仁博,Yoshihiro ISOBE
発刊日:
公開日:
キーワードタグ:
A new inspection technique using AE (acoustic emission) sensor has been developed for the purpose of evaluating the integrity of steel rods and pipes, and sensitivity analyses were made for degradations of steel rods and pipes from a theoretical viewpoint. Inner surface corrosion model of the piping changing the corrosion contents were simulated frequency distribution by dynamic analysis using the finite element method, and comparisons with experimental results obtained from mockups with simulated degr...
英字タイトル:
Development of a new inspection system for steel rod and pipe using AE sensor 2 (2) Theoretical approach
第13回
AEセンサを用いた鋼棒、鋼管の健全性評価技術の開発 2(1)実験的検討
著者:
松永 嵩,Takashi MATSUNAGA,小川 良太,Ryota OGAWA,匂坂 充行,Mitsuyuki SAGISAKA,鵜飼 康史,Yasufumi UKAI,礒部 仁博,Yoshihiro ISOBE
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For evaluating the soundness of steel rods and pipes, which are installed in nuclear power plants, we have developed a new inspection system using an AE (acoustic emission) sensor. This report described the results of studies for the detection of defects in the steel pipe and steel rod using a new inspection system. ...
英字タイトル:
Development of a new inspection system for steel rod and pipe using AE sensor 2 (1) Experimental approach
第6回
アンカーボルトの腐食量定量評価に関する技術開発
著者:
礒部 仁博,Yoshihiro ISOBE,鵜飼 康史,Yasufumi UKAI,佐久 太郎,Taro SAKU
発刊日:
公開日:
キーワードタグ:
Quantitative inspection method of corrosion using ultrasonic testing was developed in order to maintain reliability of anchor bolts. Quantity of corrosion can be measured precisely even if the anchor bolt was installed on concrete ba se. In addition to quantity of corrosion, the distance from bolt head and the length of corroded region were estimat ed by improved method. Mock-up tests were conducted for the purpose of evaluating detection capability of the method....
英字タイトル:
Development of Quantitative Inspection Method of Corrosion on Anchor BoltsUsing Ultrasonic Testing