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Threshold Crack Speed Controls Dynamical Fracture of Silicon Single Crystals

Buehler, Markus J. and Tang, Harvey and van Duin, Adri C. T. and Goddard, William A., III (2007) Threshold Crack Speed Controls Dynamical Fracture of Silicon Single Crystals. Physical Review Letters, 99 (16). Art. No. 165502. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:BUEprl07

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Abstract

Fracture experiments of single silicon crystals reveal that after the critical fracture load is reached, the crack speed jumps from zero to [approximate]2 km/sec, indicating that crack motion at lower speeds is forbidden. This contradicts classical continuum fracture theories predicting a continuously increasing crack speed with increasing load. Here we show that this threshold crack speed may be due to a localized phase transformation of the silicon lattice from 6-membered rings to a 5–7 double ring at the crack tip.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/PhysRevLett.99.165502DOIArticle
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.99.165502PublisherArticle
ORCID:
AuthorORCID
van Duin, Adri C. T.0000-0002-3478-4945
Goddard, William A., III0000-0003-0097-5716
Additional Information:© 2007 The American Physical Society. (Received 31 March 2007; published 18 October 2007) H.T. acknowledges support from MIT’s UROP program. Funding was provided by ARO (Grant No. W911NF-06-1-0291).
Funders:
Funding AgencyGrant Number
Massachusetts Institute of Technology (MIT)UNSPECIFIED
Army Research Office (ARO)W911NF-06-1-0291
Other Numbering System:
Other Numbering System NameOther Numbering System ID
WAG0728
Record Number:CaltechAUTHORS:BUEprl07
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BUEprl07
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.99.165502
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9015
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:20 Oct 2007
Last Modified:31 Jul 2018 17:40

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