Experimental Evidence and Characteristic Recognition of the Nanoweakening of Slip Deformation Zones

Journal of Nanoscience and Nanotechnology
Yan SunKui Han

Abstract

A central issue in the study of fault evolution is to identify shear weakening and its mechanism; currently, studies of fault weakening in narrow slip deformation zones, including those of various slipping planes such as schistosity, foliation, cleavage, joints and faults in rocks, are ongoing. To verify the nanoweakening in shear slipping, we carried out experiments: triaxial compression experiments on sandstones and uniaxial compression experiments on granites. Furthermore, on the basis of scanning electron microscopy (SEM) observations and experimental data analyses, we suggested three kinds of nanoweakening in terms of the corresponding strain stages: (1) The slip nanoweakening caused by the strain hardening deformation stage of the shear slip, which creates nanograins with dense coatings that may be due to the nanocoating on the shear planes, can result in rolling friction rather than with sliding friction, and the former is a principal mechanism of sliding nanoweakening. (2) The rheological nanoweakening caused by the strain softening deformation stage; in view of developing weakened deformation due to grain boundary migration (GBM), the flow of synkinematic minerals and melt coating phenomena lead to rheological nanoweak...Continue Reading

References

Sep 25, 2010·Nature·Ze'ev Reches, David A Lockner

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Migration

Cell migration is involved in a variety of physiological and pathological processes such as embryonic development, cancer metastasis, blood vessel formation and remoulding, tissue regeneration, immune surveillance and inflammation. Here is the latest research.

Related Papers

Proceedings. Mathematical, Physical, and Engineering Sciences
Zhukun ZhouMo Li
Langmuir : the ACS Journal of Surfaces and Colloids
James P EwenD Dini
Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
S Nielsen
Scientific Reports
Cecile MarichalCamelia Borca
© 2021 Meta ULC. All rights reserved