Crack growth determination on laboratory componentsFunded under: JRC-ADVMAT 2C
In order to aid design and support remanent life assessment of plant components operating at elevated temperatures, the reliability of the analytical methods, which translate materials data procured from the laboratory to the behaviour of actual components, requires validation. The present work describes the application of the component validation test philosophy to the problem of crack growth under two rather different loading conditions. In both cases, crack growth is measured using the direct current PD technique on tubular metallic components containing artificial defects; however the plant conditions to be simulated lead to either creep or thermal fatigue. The creep studies on Alloy 800H support heat exchanger designs for nuclear plant, solar towers and chemical plant, whereas the work on the ferritic 2.25CR1Mo is principally related to steam raising power plant and petro-refinery applications. Under thermal fatigue conditions the stainless steel 316L of the first wall of the fusion reactor is specifically addressed. It is important to stress that once these techniques have been successfully demonstrated for simulating a particular plant component with one material, adaptation for any other simulation or material should be relatively straightforward.
Bibliographic Reference: Paper presented: SMIRT 12, Stuttgart (DE), August 15-20, 1993
Availability: Available from (1) as Paper EN 37396 ORA
Record Number: 199310574 / Last updated on: 1994-11-29
Original language: en
Available languages: en