Takafumi ITO
著者に関連した記事は2件です。
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第9回
EMAT の磁性体内における超音波発生メカニズムのシミュレーション
著者:
伊藤 崇文,Takafumi ITO,小島 史男,Fumio KOJIMA
発刊日:
公開日:
キーワードタグ:
Condition Monitoring Magnetostrictive Force Nondestructive Inspection Nonlinear Magnetic Field 1
伊藤 崇文,Takafumi ITO,小島 史男,Fumio KOJIMA
発刊日:
公開日:
キーワードタグ:
Condition Monitoring Magnetostrictive Force Nondestructive Inspection Nonlinear Magnetic Field 1
This paper is concerned with mechanism of ultrasonic test signals in magnetic materials using electromagnetic acoustic transducer(EMAT). The co upling mechanism between the electromagnetic fields and the applied excitation of ultrasonic testing are investigated. First, a nonlinear magnetic mod el in two dimensions is presented for the coupling mechanism. Secondly, the coupling mechanisms in ferromagnetic materials are studied analytically an d numerically. The final part of this monograph is devoted to num...
英字タイトル:
Simulation on mechanism of ultrasonic test signals in magnetic materialsusing EMAT
英字タイトル:
Simulation on mechanism of ultrasonic test signals in magnetic materialsusing EMAT
第7回
高速炉サーベイランスのための中性子ドシメトリー
著者:
伊藤 主税,Chikara ITO,前田 茂,Shigetaka MAEDA,青山 卓史,Takafumi AOYAMA,井口 哲夫,Tetsuo IGUCHI
発刊日:
公開日:
キーワードタグ:
fast reactor surveillance helium accumulation fluence monitor(HAFM laser resonance mass spectrometry (RIMS) neutron dosimetry niobium dosimeter
伊藤 主税,Chikara ITO,前田 茂,Shigetaka MAEDA,青山 卓史,Takafumi AOYAMA,井口 哲夫,Tetsuo IGUCHI
発刊日:
公開日:
キーワードタグ:
fast reactor surveillance helium accumulation fluence monitor(HAFM laser resonance mass spectrometry (RIMS) neutron dosimetry niobium dosimeter
Neutron dosimetry techniques have been developed for fast reactor surveillance in long-term irradiation as the range of 10° -10 years. The high accurate and precise measurement of “Nb(n,n')93mNb reaction rate was established for fast reactor dosimetry. The effect of gamma -ray self-absorption was decreased by dissolution and evaporation to dryness of niobium dosimeter in the established method. It was confirmed that theNb(n,n') mNb reaction rate could be measured with an uncertainty within 3 % by this meth...
英字タイトル:
Neutron Dosimetry for Fast Reactor Surveillance
英字タイトル:
Neutron Dosimetry for Fast Reactor Surveillance