FATIGUE TESTING WITH THIN MINIATURIZED SPECIMENS FOR IRRADIATION STUDIES
Fatigue behaviour in irradiated structural materials for fusion and fission reactors is presently under study. Thin miniaturized specimens are required in simulation experiments using light ions because of the limited particle range and heat removal capability. Both in-situ irradiation and post-irradiation tests are carried out. The choice of experimental techniques is influenced and to some extent restricted by the irradiation environment and the reduced size specimen. While either low cycle fatigue or fatigue crack growth tests may be performed with such specimens, the latter lend themselves more readily to comparison with data obtained from conventional specimens. Studies of fatigue crack growth with various specimen geometries have emphasized, amongst other factors, the need to justify the use of linear elastic fracture mechanics beyond the normally accepted limits of applicability. The restrictions are however less severe than for fracture toughness testing, and the possibility of obtaining valid data from thin specimens has been previously demonstrated. Experimental work currently in progress on the influence of light ion irradiation on fatigue crack growth in AISI 316 stainless steel is described with particular reference to the effect of pre- implanted helium.
Bibliographic Reference: INTERNATIONAL CONFERENCE ON FATIGUE, CORROSION CRACKING, FRACTURE MECHANICS AND FAILURE ANALYSIS, SALT LAKE CITY (USA), DEC. 2-6, 1985 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32312 ORA
Availability: Can be ordered online
Record Number: 1989124068700 / Last updated on: 1987-01-01
Available languages: en