Phys. Rev. Lett. 90, 124301 (2003) [4 pages]Self-Induced Hysteresis for Nonlinear Acoustic Waves in Cracked MaterialReceived 9 May 2002; revised 27 November 2002; published 26 March 2003 A new phenomenon of self-induced hysteresis has been observed in the interaction of bulk acoustic waves with a cracked solid. It consists in a hysteretic behavior of material nonlinearity as a function of the incident pump wave amplitude. Hysteresis manifests itself in the self-action of the monochromatic pump wave and in the excitation of its superharmonics and of its subharmonics. The proposed theoretical models attribute the phenomenon to hysteresis in transition of the acoustically forced oscillation of cracks from a nonclapping regime to a regime of clapping contacts. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.124301
DOI:
10.1103/PhysRevLett.90.124301
PACS:
43.25.+y, 05.45.–a, 62.20.Mk, 62.65.+k
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