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論文
検出確率を用いた超音波厚さ計測による 配管減肉検査の信頼性評価について
著者:
中本 裕之,Hiroyuki NAKAMOTO,小島 史男,Fumio KOJIMA,加藤 翔,Sho KATO
発刊日:
公開日:
キーワードタグ:
This paper proposes a reliability assessment method for thickness measurements of pipe wall using probability of detection (POD). Thicknesses of pipes are measured by qualified inspectors with ultrasonic thickness gauges. The inspection results are affected by human factors of the inspectors and include some errors, because the inspectors have different experiences and frequency of inspections. In order to ensure reliability for inspection results, first, POD evaluates experimental results of pipe-wal...
英字タイトル:
Reliability assessment for thickness measurements of pipe wall using probability of detection
論文
高温純水中における SUS304 鋼の インパクトフレッティング摩耗に及ぼす化学的影響
著者:
佐藤 善紀,Yoshiki SATO,岩渕 明,Akira IWABUCHI,内舘 道正,Michimasa UCHIDATE,八代 仁,Hitoshi YASHIRO
発刊日:
公開日:
キーワードタグ:
In order to study the wear properties of the pipe materials for the power generating plants, impact fretting wear tests of AISI304 disks against Al2O3 balls and AISI304 balls were carried out in high temperature pure water. SEM, EPMA, 3D-profilometer and nano-indenter were used for observation, analysis and measurement of wear scars. The maximum wear depth of the disk increased with an increase in water temperature and decreased with an increase in impact frequency below 80°C. However, the maximum we...
英字タイトル:
Chemical Effect on Impact Fretting Wear of AISI304 Stainless Steel in High Temperature Pure Water
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