Results 21 to 30 of about 366,004 (267)

Impurity Analysis and Microstructure Along the Climatic Transition From MIS 6 Into 5e in the EDML Ice Core Using Cryo-Raman Microscopy

Frontiers in Earth Science, 2019
Impurities in polar ice cores have been studied so far mainly for the purpose of reconstructions of past atmospheric aerosol concentrations. However, impurities also critically influence physical properties of the ice matrix itself.
Jan Eichler, Jan Eichler, Christian Weikusat, Anna Wegner, Birthe Twarloh, Melanie Behrens, Hubertus Fischer, Maria Hörhold, Daniela Jansen, Sepp Kipfstuhl, Urs Ruth, Frank Wilhelms, Frank Wilhelms, Ilka Weikusat, Ilka Weikusat   +14 more
doaj   +1 more source

Evolution of Shear Band in Plane Strain Compression of Naturally Structured Clay with a High Sensitivity

Applied Sciences, 2022
The formation of the shear band is associated with the failure of soil. However, there has been relatively little investigation on the evolution of shear bands in naturally structured clay with a high sensitivity.
Bingheng Liu, Lingwei Kong, Chengsheng Li, Juntao Wang   +3 more
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Surface deformation field and fracture propagation mechanism of rock-like specimen with pre-existing fracture

Meitan kexue jishu, 2023
Eastern coalfield goes into deep mining gradually in China. Fracture development rises greatly in surrounding rocks, increasing the difficulty in ground control under increased mining disturbance.
Zhaohui WANG, Wenchao SUN, Xuebing WANG, Bokai QIAO   +3 more
doaj   +1 more source

Permeability evolution of compacted clay during triaxial compression

Rock and Soil Mechanics, 2020
Triaxial seepage tests were conducted on the core-wall clay of a high rock-fill dam to investigate the change of hydraulic conductivity with axial strain.
WANG Gang, WEI Lin-yi, WEI Xing, ZHANG Jian-min   +3 more
doaj   +1 more source

Experimental study of the influence of drainage conditions on sandstone mechanics and its deformation localization characteristics

Meitan kexue jishu, 2023
In order to study the deformation localization failure characteristics of sandstone under the coupling action of seepage and stress, the triaxial compression tests of sandstone under different drainage conditions were carried out using the visualized ...
Jiang XU, Qi CAO, Shoujian PENG, Yian CHEN, Qianwen ZHANG, Haokui RAO   +5 more
doaj   +1 more source

Disorder is good for you: the influence of local disorder on strain localization and ductility of strain softening materials [PDF]

International Journal of Fracture, 2017
We formulate a generic concept model for the deformation of a locally disordered, macroscopically homogeneous material which undergoes irreversible strain softening during plastic deformation. We investigate the influence of the degree of microstructural heterogeneity and disorder on the concomitant strain localization process (formation of a ...
Tüzes, Dániel, Ispánovity, Péter Dusán, Zaiser, Michael   +2 more
openaire   +3 more sources

Study on the Grain Rotation of High-Purity Tantalum during Compression Deformation

Crystals, 2022
A compression experiment with electron backscatter diffraction (EBSD) measurements was designed to characterize the effect of the microtexture on the grain rotation process.
Qianqian Zhu, Yahui Liu, Kexing Song, Yanjun Zhou, Xiaokang Yang, Shifeng Liu, Lingfei Cao   +6 more
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Migration and Localization of Metal Atoms on Strained Graphene [PDF]

Physical Review Letters, 2010
Reconstructed point defects in graphene are created by electron irradiation and annealing. By applying electron microscopy and density functional theory, it is shown that the strain field around these defects reaches far into the unperturbed hexagonal network and that metal atoms have a high affinity to the nonperfect and strained regions of graphene ...
Cretu, Ovidiu, Krasheninnikov, Arkady V., Rodríguez-Manzo, Julio A., Sun, Litao, Nieminen, Risto M., Banhart, Florian   +6 more
openaire   +5 more sources

Statistical method for quantifying the strain localization process in Beishan granite under multi-creep triaxial compression based on distributed optical fiber sensing

Journal of Rock Mechanics and Geotechnical Engineering
To investigate the damage evolution caused by stress-driven and sub-critical crack propagation within the Beishan granite under multi-creep triaxial compressive conditions, the distributed optical fiber sensing and X-ray computed tomography were combined
Xiujun Zhang, Peng-Zhi Pan, Shuting Miao
doaj   +1 more source

Finite element simulation of strain localization in inelastic solids by energy relaxation

Vietnam Journal of Mechanics, 2011
A new approach for the treatment of strain localization in inelastic material is proposed. It is based on energy minimization principles associated with micro-structure developments. Shear bands are treated as micro-shearing of rank-one laminates.  It is
B. T. Trinh, K. Hackl
doaj   +1 more source