Results 21 to 30 of about 1,360,531 (316)

Consolidation Characteristics and Bearing Behavior of Sand Pile Composite Foundation in Caisson Heightening

open access: yesShanghai Jiaotong Daxue xuebao, 2021
To study the influence of consolidation on the bearing capacity of the composite foundation in the process of caisson heightening, the consolidation characteristics of the sand pile composite foundation in the process of caisson heightening are discussed
CHEN Peishuai, PAN Yazhou, LIANG Fayun, LI Dejie
doaj   +1 more source

Fatigue and Corrosion Fatigue of 18Ni Maraging Steel [PDF]

open access: yesArchives of Metallurgy and Materials, 2020
This study focused on the fatigue and corrosion fatigue of maraging steel 18Ni (250). The 18Ni (250) samples were tested for axial fatigue in air and 3.5% NaCl solution.
Zhu Yongmei   +6 more
doaj   +1 more source

Very High Cycle Fatigue Behavior of TA11 Titanium Alloy

open access: yesJournal of Aeronautical Materials, 2017
The conventional fatigue test method was used to obtain the very high cycle fatigue (VHCF) limits of 3×107 and 1×108 cycles for TA11 titanium alloy in different temperatures and stress ratios.
JIAO Zehui   +4 more
doaj   +1 more source

Fatigue Crack Growth Behavior of Different Zones in an Overmatched Welded Joint Made with D32 Marine Structural Steel

open access: yesMetals, 2023
Applying fracture mechanics theory to heterogeneous welded joints might lead to an uncertain assessment of fatigue crack propagation behavior and, consequently, an inaccurate estimation of the cyclic loading capacity and fatigue life of welded structures.
Wei Song   +6 more
doaj   +1 more source

Kynurenine to tryptophan ratio as a biomarker of acute stress in fish [PDF]

open access: yesChemosphere, 2022
The aim of this study was to determine the kynurenine (KYN) to tryptophan (TRP) ratio (KTR) in fish tissue to assess its usefulness as a biomarker of acute stress. Laboratory held rainbow trout (Oncorhynchus mykiss) were subjected to an acute stressor and KYN, TRP and cortisol were measured in liver and brain tissues at 4- and 48-h post-stress.
Jade Wish   +9 more
openaire   +2 more sources

Examination of the bovine leukocyte environment using immunogenetic biomarkers to assess immunocompetence following exposure to weaning stress [PDF]

open access: yes, 2011
peer-reviewedBackground: The molecular mechanisms by which stress induces the development of pathologies remains unclear, although it is recognised that one of the major factors affecting health as a consequence of stress is the involvement of the ...
McGee, Mark   +14 more
core   +1 more source

Effects of cyclic loading on lateral bearing capacity of single pile in silty seabed

open access: yesYantu gongcheng xuebao
Under larger wave loading, the bearing capacity of marine single pile foundation will be reduced, even instability occurs. A series of undrained shear triaxial tests on the remolded marine silt in Hangzhou Bay are carried out by means of the GDS triaxial
WANG Mingyuan 1, SUN Jizhu 2, WANG Yong 3, YANG Yang 4
doaj   +1 more source

Fatigue Crack Propagation Study of Bridge Steel Q345qD Based on XFEM Considering the Influence of the Stress Ratio

open access: yesApplied Sciences, 2022
In the past, fatigue cracks have appeared in the orthotropic steel decks of bridges shortly after they opened to traffic. Previous studies have shown that high tensile welding residual stress exists in welded joints of steel bridges, which significantly ...
Baoya Cao   +4 more
doaj   +1 more source

Evaluating stress intensity factors due to weld residual stresses by the weight function and finite element methods [PDF]

open access: yes, 2010
This paper presents a study on the application of the weight function and finite element methods to evaluate residual stress intensity factors in welded test samples.
Yahaya, N. A.   +5 more
core   +1 more source

Research of rotating and ultrasonic cycling fatigue in high-cycle regimes

open access: yesJournal of Aeronautical Materials
The effects of stress ratio(R),loading condition,and MnS inclusion on the fatigue behavior of medium-carbon pearlitic high strength steel were investigated by the combination of rotating(frequency of 52.5 Hz,103-108)bending and ultrasonic (frequency of ...
LIU Lu, WANG Shengnan, MA Yifan
doaj   +1 more source

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