書誌事項
- タイトル別名
-
- An approach on ultrasonic testing of surface flaws in buttwelded bottom plate joint with covered coating in oil tank
- 石油タンク底板突合せ溶接部表層部きずのコーティング上からの超音波探傷試験技術の検討(第2報)溶接線検査装置によるきずの検出
- セキユ タンク ソコイタ ツキアワセ ヨウセツブ ヒョウソウブキズ ノ コーティング ジョウ カラ ノ チョウオンパタンショウ シケン ギジュツ ノ ケントウ(ダイ2ホウ)ヨウセツセン ケンサ ソウチ ニ ヨル キズ ノ ケンシュツ
- 2<sup>nd</sup> report: Flaw detection using ultrasonic test machine for weld line
- 第2報 溶接線検査装置によるきずの検出
この論文をさがす
説明
In the former report, phased array testing which carried out the sector scan using focus beam had discussed and reported to have sufficient ability to detect the surface flaws on the butt-welded joint of the bottom plates in state-oil-stockpiling tank covered with tight coating painted to prevent corrosion of bottom plates. In this report, ultrasonic test system and scanning machine were discussed in order to apply to actual tanks. And confirmation test results for flaw detectability which performed using the test plates with EDM notches on the weld surfaces simulated the actual joint configuration of the bottom plates in state-oil-stockpiling tank and field verification test results which performed using weld line of about 1. 5km in 3 actual tanks were reported. <br> Simultaneous test system for flaws along the weld direction and flaws vertical to the weld direction were discussed. Two phased array probes were located at both sides of weld line in order to detect flaws along the weld direction from both sides of weld line with sector scans and to use by pitch-and-catch method for coupling check. Two angle probes of refraction angle of 70 degree were located emitting and receiving the ultrasonic beam in the direction of 45 degree to the weld line and crossing two beams at weld center line with 1 skip for vertical flaw detection to weld line. Scanning machine with laser tracking equipment was prototyped and proved to trace the laser beam emitted from over 50m distance through weld centerline by commercial low output laser transmitter with high accuracy.<br> In the confirmation tests using the test plates simulated the actual tank welds and in the actual 3oil tanks, it was confirmed that scanning system mounted ultrasonic test system was sufficiently functioning under 75mm⁄sec. of traveling speed, and had sufficient flaw detectability.
収録刊行物
-
- 圧力技術
-
圧力技術 51 (3), 108-115, 2013
一般社団法人 日本高圧力技術協会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001204616440576
-
- NII論文ID
- 10031176587
-
- NII書誌ID
- AN00011762
-
- ISSN
- 13479598
- 03870154
-
- NDL書誌ID
- 024780688
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可