Residual stresses and their influence for detection and sizing of defects
Three aspects of the effect of residual stresses on the integrity of pressure vessels are considered: - quantification of residual stresses; - location of cracks and determination of their geometrical size, taking account of positive and negative residual stresses and - linkage of these fracture mechanics data with operational stresses to arrive at a statement of safety. The literature on the subject has been evaluated. Possible methods considered for determining residual stresses include X-ray and neutron diffraction techniques, ultrasonics, magnetic methods, hole-drilling, optical techniques, hardness measurement and the ring-core method. The assessment of residual stresses by the methods of fracture mechanics and the significance of residual stresses to the detectability and sizing of defects by non-destructive methods are also reviewed.
Bibliographic Reference: EUR 14101 EN (1992) 143 pp., FS, ECU 15
ISBN: ISBN 92-826-4105-8
Record Number: 199210659 / Last updated on: 1994-12-02
Original language: en
Available languages: en