Abstract
Abstract A new method, allowing the determination of R-curve behaviour of ceramic materials, is developed. This method, called ‘crack line wedge loading’ (CLWL), presents many advantages, especially the continuous observation of the crack growth, a mode 1 fracture specimen and plane stress, conditions favourable to show the rising R-curve effect. The R-curve behaviour of Ce-ZrO 2 is assessed by this new test procedure and the results are compared with those given by another classical method (Bluhm's slice model). The data obtained by the two methods are in close agreement. However, the new method allows a broader range of crack lengths to be covered and thus is a more accurate technique to determine the stress intensity factor corresponding to the crack initiation. It is shown that the CLWL technique gives actual values of the stress intensity factor because it is possible to take into account the main crack, together with the microcracks constituting the process zone.
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.
