A shear band (or, more generally, a 'strain localization') is a narrow zone of intense shearing strain, usually of plastic nature, developing during severe deformation of ductile materials.
As an example, a soil (overconsolidated silty-clay) specimen is shown in Fig. 1, after an axialsymmetric compression test. Initially the sample was cylindrical in shape and, since symmetry was tried to be preserved during the test, the cylindrical shape was maintained for a while during the test and the deformation was homogeneous, but at extreme loading two X-shaped shear bands had formed and the subsequent deformation was strongly localized (see also the sketch on the right of Fig. 1).
Fig. 1: An initially cylindrical soil sample has been deformed in a setting designed to maintain symmetry (lubricated top and bottom heads have been used). Despite the attempt of preserving symmetry, two X-shaped shear bands are clearly visible (see also the sketch on the right, where initial vertical scratches on the external surface help understanding the shear deformation).
A shearband (or, more generally, a 'strain localization') is a narrow zone of intense shearing strain, usually of plastic nature, developing during severe...
In physics, mechanics and engineering, an adiabatic shearband is one of the many mechanisms of failure that occur in metals and other materials that are...
shearband cleavages. step-over sites. The width of individual shear zones stretches from the grain scale to the kilometer scale. Crustal-scale shear...
differences between crazing and shearbanding is that crazing occurs with an increase in volume, which shearbanding does not. This means that under compression...
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inclusion in a prestressed, elastic material. Part II Implications on shearband nucleation, growth and energy release rate. Journal of the Mechanics and...
matrix. These theories include: microcrack theory, shear-yielding theory, multiple-crazing theory, shearband and crazing interaction theory, and more recently...
atmosphere. Atmospheric wind shear is normally described as either vertical or horizontal wind shear. Vertical wind shear is a change in wind speed or...
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fails and forms sliding regions within itself, known as shearbands. The geometry of the shearing in a triaxial test typically causes the sample to become...
Pure polycrystalline magnesium is brittle and easily fractures along shearbands. It becomes much more malleable when alloyed with small amounts of other...
leads to yielding via mechanisms such as brittle fracture, crazing, and shearband formation. In these systems, strengthening mechanisms do not involve dislocations...
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airborne wind shear detection and alert system, fitted in an aircraft, detects and alerts the pilot both visually and aurally of a wind shear condition....
the rate at which it is being deformed by progressive shearing without changing its volume (shear rate). It is zero if these distances do not change, as...
by such shearing force is equivalent to rotation of the rock combined with shortening in one direction and extension in another. Some banding is formed...
glasses, both of which exhibit behaviors such as the reverse Hall-Petch and shear-band softening effects that prevent them from reaching ideal strength values...
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