Results 31 to 40 of about 21,077 (297)

Creep mechanical characteristics and nonlinear viscoelastic-plastic creep model of sandstone after high temperature heat treatment

open access: yes, 2023
This work studies the creep mechanical characteristics and nonlinear viscoelastic-plastic creep model of sandstone treated at different temperatures.
Berto F, Pan XK, Zhou XP
core   +1 more source

A memory-dependent three-dimensional creep model for concrete

open access: yesCase Studies in Construction Materials
The study of creep models for concrete is of great significance in analyzing and predicting the long-term stability of concrete structures. Based on the theory of memory-dependent derivatives, memory-dependent viscous dashpots that can describe the ...
Deng Zhang   +4 more
doaj   +1 more source

Mathematical methods to unloading creep constitutive model of rock mass under high stress and hydraulic pressure

open access: yesAlexandria Engineering Journal, 2021
The main purpose of this paper is to study the unloading mechanical characteristics of rock mass unloading under high stress and high water pressure. An unloading creep test of deep sandstone was conducted under different initial stresses and hydraulic ...
Ningyu Zhao, Haifei Jiang
doaj   +1 more source

Improved Nonlinear Nishihara Shear Creep Model with Variable Parameters for Rock-Like Materials

open access: yesAdvances in Civil Engineering, 2020
Creep property is an important mechanical property of rocks. Given the complexity of rock masses, mechanical parameters change with time in the creep process.
Hang Lin   +6 more
doaj   +1 more source

Triaxial Creep Test and Particle Flow Simulation of Coarse-Grained Soil Embankment Filler

open access: yesFrontiers in Earth Science, 2020
In order to study the creep characteristics of the coarse-grained soil as embankment filler under long-term vehicle loading, the creep test was performed on coarse-grained soil using the large scale dynamic and static triaxial instruments, and the creep ...
Zhongming He   +3 more
doaj   +1 more source

Creep-Fatigue Life Evaluation of Solder Based on Creep Characteristics.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A, 1998
Torsional fatigue tests and creep tests were carried out on a 60Sn-40Pb solder. In both tests three temperatures (303∼333K) were used, and in the fatigue test five cycling frequencies (0.001∼5.0 Hz) were used. An evaluation method for the solder fatigue life under relatively high temperature or low cycling frequency was proposed from the test results ...
TANEDA, Motoharu   +2 more
openaire   +2 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

The creep behavior of simple structures with a stress range-dependent constitutive model

open access: yes, 2012
High temperature design remains an issue for many components in a variety of industries. Although finite element analysis for creep is now an accessible tool, most analyses outside the research domain use long standing and very simple constitutive models
Boyle, James
core   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

A Study of Pulsating Stress Creep Characteristics (II)

open access: yesJournal of the Japan Welding Society, 1966
Most of machines, vessels and others for high-temperature service are not static in their load or stress in actual service but vary in some regular or irregular manner depending on the operating conditions. In designing and manufacturing these products, therefore, the flow or creep properties and rupture characteristics of used materials and their ...
Watanabe, Masaki, Ogawa, Seiroku
openaire   +3 more sources

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