Abstract
Heat or mass transfer across crack surfaces can generate localized shrinkage causing internal stresses which drive crack propagation. We present experiments suggesting the existence of such a diffusion controlled directional self-cracking. We formulate a simple two-dimensional stationary model of straight, evenly spaced, parallel cracks for this process, which takes into account the heat transfer across the crack surfaces and the interaction of neighboring cracks. The governing equations are solved numerically using finite elements. Crack spacing and velocity can be predicted utilizing a stability argument combined with simple ideas about the formation of the crack array. The selected solution is marginally stable with minimal values for crack spacing and velocity. The results are compared with predictions from a simpler model by Yakobson.
Sign-in/Register to access full text options 
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.
