Abstract:The paper presents a special shape plate specimen with high strain gradient fields which are similar to those at pressure vessel nozzles. On the specimens, experimental J parameter was obtained by means of the multiple specimen technique; the CTOD δt of three definitions was measured with the microphotography technique; the fracture criteria of the crack initiation were examined at the same time. Thus the estimation formula of the parameter J and the relation between J and δt are deduced for practical nozzle c… Show more
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.