Results 61 to 70 of about 97,443 (207)

SANS study of hybrid silica aerogels under "in situ" uniaxial compression [PDF]

, 2008
We have modified the inorganic silica network of aerogels with polydimethylsiloxane (PDMS), a hydroxyl-terminated polymer, to obtain an organic modified silicate (ORMOSIL). Reactions were assisted by high-power ultrasounds.
Esquivias Fedriani, Luis María, Keiderling, Uwe, Morales Flórez, Víctor, Piñero, Manuel, Rosa Fox, Nicolás de la, Toledo Fernández, J. A.   +5 more
core   +1 more source

Research on the Uniaxial Compression Performance of Basalt Fiber-reinforced Recycled Aggregate Concrete

Medžiagotyra
This study improves the mechanical properties of recycled concrete by adding basalt fibers, thereby promoting the widespread application of recycled concrete in engineering.
Shu SUN, Hsingwei TAI, Zhenyu TAN, Chiachen WEI   +3 more
doaj   +1 more source

Extraction and identification of spectrum characteristics of coal and rock hydraulic fracturing and uniaxial compression signals

International Journal of Coal Science & Technology, 2023
Microseismic (MS) events generated during coal and rock hydraulic fracturing (HF) include wet events caused by fracturing fluid injection, in addition to dry events caused by stress perturbations.
Ya′nan Qian, Quangui Li, Qianting Hu, Zhizhong Jiang, Ronghui Liu, Jie Li, Wenxi Li, Changjun Yu   +7 more
doaj   +1 more source

Band gap engineering of MoS$_2$ upon compression [PDF]

, 2016
Molybdenum disulfide (MoS$_2$) is a promising candidate for 2D nanoelectronic devices, that shows a direct band-gap for monolayer structure. In this work we study the electronic structure of MoS$_2$ upon both compressive and tensile strains with first ...
López-Suárez, Miquel, Neri, Igor, Rurali, Riccardo   +2 more
core   +2 more sources

On damping created by heterogeneous yielding in the numerical analysis of nonlinear reinforced concrete frame elements

, 2015
In the dynamic analysis of structural engineering systems, it is common practice to introduce damping models to reproduce experimentally observed features.
Cottereau, Régis, Jehel, Pierre
core   +3 more sources

Atomistic simulation of the uniaxial compression of black phosphorene nanotubes

Vietnam Journal of Mechanics, 2018
We study through molecular dynamics finite element method with Stillinger-Weber potential the uniaxial compression of (0, 24) armchair and (31, 0) zigzag black phosphorene nanotubes with approximately equal diameters.
Van-Trang Nguyen, Minh-Quy Le
doaj   +1 more source

Deforming glassy polystyrene: Influence of pressure, thermal history, and deformation mode on yielding and hardening [PDF]

, 2009
The toughness of a polymer glass is determined by the interplay of yielding, strain softening, and strain hardening. Molecular-dynamics simulations of a typical polymer glass, atactic polystyrene, under the influence of active deformation have been ...
Alexey V. Lyulin, Allen M. P., Bart Vorselaars, Callister W. D., Doi M., Flory P. J., Landau L. D., M. A. J. Michels, Pu Z., Ragab A. -R. A. F., Treloar L. R. G., van Krevelen D. W., Wales D. J., Ward I. M., Zoller P.   +14 more
core   +1 more source

Optical birefringence in uniaxially compressed aerogels

New Journal of Physics, 2010
The uniaxial strain dependence of refractive index anisotropy has been measured for a series of high-porosity aerogel samples. Uniaxial compression of compliant aerogels introduces an optical activity into the material. We report on the compression-dependent optical birefringence of samples with porosities from 95 to 99% under a uniaxial compression of
Lee, Yoonseok, Bhupathi, P., Jaworski, L., Hwang, J., Tanner, D. B., Obukov, S., Mulders, N.   +6 more
openaire   +1 more source

Dataset for time-lapse ultrasonic tomography of a granite slab under uniaxial compression test

Data in Brief, 2018
This data article includes raw data for time-lapse ultrasonic tomography measurements during a uniaxial compression test. Two sets of experimental data are included: first, the ultrasonic tomography (UT) observation (i.e., waveform) data at each 20 MPa ...
Qi Zhao, Tai-Ming He, Johnson Ha, Kaiwen Xia, Giovanni Grasselli   +4 more
doaj   +1 more source

Analysis of Concrete Failure on the Descending Branch of the Load-Displacement Curve

Crystals, 2020
In this paper, load-displacement and stress-strain diagrams are considered for the uniaxial compression of concrete and under three-point bending. It is known that the destruction of such materials occurs on the descending branch of the load-displacement
Gennadiy Kolesnikov
doaj   +1 more source