Results 281 to 290 of about 4,001,407 (359)

Three-dimensional particle model based numerical simulation on multi-level compressive cyclic loading of concrete

Construction and Building Materials, 2019
Under the framework of the particle flow code (PFC), a three-dimensional multi-level stress corrosion model (MSC) is proposed to reproduce the mechanical behaviour of brittle geo-materials and concrete exposed to multi-level cyclic compressive loading ...
Zhengyang Song, H. Konietzky, M. Herbst
semanticscholar   +1 more source

The response of human premolars to cyclic loading

Journal of Oral Rehabilitation, 1997
summary The aim of the study was to obtain data on the dynamic strength of both intact and prepared premolars for partial veneer crowns. Cyclic loading was performed in a modified Amslers high‐frequency pulsator with varying force (between 400 and 1400 N). The greatest dynamic strength was exhibited by the intact samples. The greater the load the
A, Catović, K, Kraljević, V, Jerolimov, A, Celebić, F, Kovacićek, M, Valentić-Peruzović   +5 more
openaire   +2 more sources

Cyclic Axial Loading of Spinal Implants

Spine, 1985
The performance characteristics of Harrington distraction rods were evaluated and compared with paired wired L-rods when subjected to cyclic axial compression loading. Twelve fresh frozen swine spines with intact facet joints and anterior and posterior ligamentous complexes were instrumented and tested in a specially designed pneumatic testing device ...
R J, Nasca, J M, Hollis, J E, Lemons, T A, Cool   +3 more
openaire   +2 more sources

Thermal and cyclic loading of endodontic posts

European Journal of Oral Sciences, 1999
The intent of this study was to determine pullout (shear) strength of carbon and stainless steel serrated posts from teeth. The tooth-posts groups were controls, thermal-cycled, load-cycled (load applied at either a 45 degrees angle or along the long axis of the post), and thermal- and load-cycled.
J L, Drummond, T R, Toepke, T J, King
openaire   +2 more sources

Cyclic Shear Strength of Silts and Sands under Cyclic Loading

Earthquake Engineering and Soil Dynamics, 2005
The effect of fines content on the liquefaction of sandy soils has been investigated widely. However, currently there are contradicting suggestions and findings based on laboratory measurements and/or field observations. In this study, a series of stresscontrolled hollow cylinder cyclic torsional triaxial shear tests were conducted on saturated samples
Altun S., Göktepe A.B., Akgüner C.
openaire   +2 more sources

Characterization of the deformation behavior of fine-grained sandstone by triaxial cyclic loading

Construction and Building Materials, 2018
Chaojun Jia, Weiya Xu, Jiuchang Zhang
exaly   +2 more sources

The role of pore water plays in coal under uniaxial cyclic loading

Engineering Geology, 2019
Geofluids are common in underground coal mines and have a significant influence on the deformation of coal rock, where the pore pressure of geofluids varies during swelling or shrinkage processes.
Chunling Zhong, Zhenyu Zhang, P. Ranjith, Yiyu Lu, X. Choi   +4 more
semanticscholar   +1 more source

Evaluation of permeability damage for stressed coal with cyclic loading: An experimental study

, 2019
Permeability and its evolution directly control the flow behaviors of the subsurface energy fluid extractions. Coalbed is known as a fractured, dual-porous media, and whose permeability is directly related to effective stress and the manner of stress ...
Long Fan, Shimin Liu
semanticscholar   +1 more source

Dynamic mechanical behavior and fatigue damage evolution of sandstone under cyclic loading

International Journal of Rock Mechanics and Minings Sciences, 2017
Bi Sun, Zhende Zhu, Chong Shi
exaly   +2 more sources

Load-settlement response of shallow square footings on geogrid-reinforced sand under cyclic loading

Geotextiles and Geomembranes, 2018
To study the settlement and dynamic response characteristics of shallow square footings on geogrid-reinforced sand under cyclic loading, 7 sets of large scale laboratory tests are performed on a 0.5 m wide square footing resting on unreinforced and ...
Jia-quan Wang, Liang-liang Zhang, J. Xue, Yi Tang   +3 more
semanticscholar   +1 more source