英字タイトル:
Improvement of Residual Stress by Outer Surface Irradiated Laser Stress Improvement Process
著者:
上田 剛史 Takeshi UEDA 村上 平八朗 Heihachiro MURAKAMI
発刊日:
公開日:
カテゴリ: 第5回
キーワードタグ:

概要

Improvement of residual stress is effective in a countermeasure for the stress corrosion cracks in pipe welds. An outer surface irradiated Laser Stress Improvement Process (L-SIP) will be introduced as a method to improve residual stress inside steel pipes. This method is to improve inne r surface residual stress from tensile stress to compressive by the temperature differences between inner and outer surface, that is generated b y the irradiation of laser beam around the welds of steel pipe. Recently this method is applied to PWR pressurizer surge nozzle on Tsuruga unit 2


全文掲載のPDFファイルダウンロード