Description: Fifteen wide-plate crack-arrest tests have been completed to date, ten utilizing specimens fabricated from A533B class 1 material (WP-1 and WP-CE series), and five fabricated from a low upper-shelf base material (WP-2 series). Each test utilized a single-edge notched specimen that was subjected to a linear thermal gradient along the plane of crack propagation. Test results exhibit an increase in crack-arrest toughness with temperature, with the rate of increase becoming greater as the temperature increases. When the wide-plate test results are combined with other large-specimen results the data show a consistent trend in which the K/sub Ia/ data extends above the limit provided in ASME Section XI. 24 refs., 11 figs., 7 tabs.
Date: January 1, 1988
Creator: Naus, D.J.; Bass, B.R.; Keeney-Walker, J.; Fields, R.J.; deWit, R. & Low, S.R. III
Partner: UNT Libraries Government Documents Department