Quasi-periodic events in crystal plasticity and the self-organized avalanche oscillator

Stefanos Papanikolaou (), Dennis M. Dimiduk, Woosong Choi, James P. Sethna, Michael D. Uchic, Christopher F. Woodward and Stefano Zapperi
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Stefanos Papanikolaou: Yale University
Dennis M. Dimiduk: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, Ohio 45433, USA
Woosong Choi: Laboratory of Atomic and Solid State Physics, Clark Hall, Cornell University
James P. Sethna: Laboratory of Atomic and Solid State Physics, Clark Hall, Cornell University
Michael D. Uchic: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, Ohio 45433, USA
Christopher F. Woodward: Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RXCM, Wright-Patterson AFB, Ohio 45433, USA
Stefano Zapperi: CNR–Consiglio Nazionale delle Ricerche, IENI, Via R. Cozzi 53, 20125 Milano, Italy

Nature, 2012, vol. 490, issue 7421, 517-521

Abstract: A crystalline material is investigated that responds to a slowly increasing external stress by exhibiting impulsive ‘avalanche’ behaviour as well as smooth stress release that is approximately as slow as the external stress rate; unusual oscillatory behaviour in the avalanche time series is reported.

Date: 2012
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DOI: 10.1038/nature11568

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