Results 61 to 70 of about 216 (120)

Shear‐Band Dynamics in Metallic Glasses

Advanced Functional Materials, 2015
The future of metallic glasses as an advanced structural and functional material will to a great extent depend on the understanding and control of their mesoscopic flow defects called shear bands. These defects are sweet‐and‐sour; sweet because they mediate macroscopic plasticity at room temperature, and sour because they quickly promote failure.
Maass Robert, Loeffler Joerg F.
openaire   +3 more sources

Influences of Initial Stresses on Formation of Shear Bands and Mechanical Properties in Binodal Decomposed Metallic Glass Composites

Nanomaterials
Structural heterogeneity is useful for improving the plasticity of metallic glasses (MGs) by blocking the propagation of shear bands (SBs). The introduction of a heterogeneous structure often introduces residual stresses, which significantly influences ...
Yongwei Wang, Guangping Zheng, Mo Li
doaj   +1 more source

Shear localization in quasi-two-dimensional frictionless hydrogel layer controlled by packing fraction and system geometry [PDF]

EPJ Web of Conferences
How do packing fraction and system geometry a↵ect shear banding, which controls the entire system’s rheological properties? In this study, we demonstrate that both increases in packing fraction and in shear channel width decrease shear band width ...
Sasaki Yuto, Katsuragi Hiroaki
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Experimental measurement of granular fabric and its evolution under shearing

EPJ Web of Conferences, 2017
X-ray μ computed tomography (CT) made three-dimensional in-situ imaging of natural granular materials possible. Previous work using x-ray μCT and triaxial compression tests has studied the 3D kinematics of individual grains during shear banding [1]. This
Wiebicke Max, Andò Edward, Salvatore Erminio, Viggiani Gioacchino, Herle Ivo   +4 more
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Dynamic failure of viscoplastic structures under ASB and micro-voiding

EPJ Web of Conferences, 2018
Adiabatic shear bands are known to cause premature structural failure in high strength metals and alloys. The observation of adiabatic shear bands inside partially fractured specimens evidences the presence of micro-voids as the precursor of the ultimate
Lois Dorothy Hannah, Longere Patrice
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Shear-banding instabilities

, 2010
Gradient-banding and vorticity-banding instabilities, as well as a shear-induced instability due to shear-gradient induced mass transport will be discussed. Various scenarios that underly these instabilities are addressed and simple constitutive relations that allow for a (semi-) quantitative analysis are proposed.
Dhont, J.K.G., Kang, K., Lettinga, M.P., Briels, W.J.   +3 more
openaire   +1 more source

Effect of ion irradiation on mechanical behaviors of Ti40Zr25Be30Cr5 bulk metallic glass

Materials Research, 2012
In this work, the effect of C4+ and Cl4+ ion irradiation with 25 MeV energy on the hardness and shear banding feature of Ti40Zr25Be30Cr5 bulk metallic glass was studied.
Zheng Hu, Ziqiang Zhao, Yanping Hu, Jianshuo Xing, Tong Lu, Bingchen Wei   +5 more
doaj  

Shear banding in fourth order gradient plasticity

Journal of the Mechanical Behavior of Materials, 1994
Mühlhaus, Η-B.
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Euromech Colloquium No. 492: Shear-banding Phenomena in Entangled Systems

Applied Rheology, 2008
Wilson Helen J., Paul Lettinga M.
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Is a birefringence band a shear band?

Europhysics Letters (EPL), 2000
The discrepancy between the width of birefringence bands and shear rate bands in the system CTAB/water is addressed using a combination of NMR spectroscopy and NMR velocimetry. In correspondence with birefringence measurements in the annular gap of a cylindrical Couette cell, 2H NMR spectroscopy indicates a separation of fluid into distinct nematic and
E Fischer, P. T Callaghan
openaire   +1 more source