Abstract
Digital image correlation has been applied to optical images in order to detect crack nuclei in fine-grain size pure and Cr-doped aluminas. Individual intergranular crack nuclei within areas comprising tens of thousands of grains were detectable, and their crack lengths and opening strains obtained as a function of load prior to unstable fracture. Identification of the crack nuclei by this method allowed the grain boundary plane and grain orientations in the vicinity of crack nuclei to be characterised by electron microscopy. Crack nuclei were found to develop at boundaries that are predicted to have higher tensile thermal strains, caused by the orientation of the grain boundary plane relative to the adjacent grains.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
