The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
There were some the axial surface defects with extremely small openings and the shape like crack on the oxygen pipeline in a company, and they all were difficult to be eliminated. In order to determine whether these defects could be safe, the fatigue test was carried out on 10 steel with real and artificial surface defects. According to the test result, the method by which a notch fatigue crack initiation...