Results 11 to 20 of about 445,228 (283)

Experimental study of the interaction of directional crack and open joint in slit charge blasting

工程科学学报, 2021
To explore the interaction between directional crack and open joint in slit charge blasting, a dynamic caustics method and high-speed photography technology were used to carry out the blasting model experiment.
Chen-xi DING, Ren-shu YANG, Cheng CHEN, Xin-min MA, Yi-qiang KANG, Yong ZHAO   +5 more
doaj   +1 more source

Stochastic filter-based fatigue crack growth prediction for pipelines considering unknown model parameters and measurement uncertainty

Journal of Pipeline Science and Engineering, 2022
In this study a methodology is developed and implemented in Python for fatigue crack growth prediction in pipelines, by leveraging measurement data and fatigue growth model predictions.
Durlabh Bartaula, Samer Adeeb, Yong Li
doaj   +1 more source

Stress Intensity Factor of Reinforced Concrete Beams in Bending

Buildings, 2021
The stress values at the crack tip in bending reinforced concrete beams are considered. The stress state is analytically determined with an initial and propagating crack.
Zhmagul Smagulovich Nuguzhinov, Zhetpisbay Bakirovich Bakirov, Nikolai Ivanovich Vatin, Madi Zhetpisbaevich Bakirov, Irina Alekseevna Kurokhtina, Daniyar Tokanovich Tokanov, Omirkhan Khabidolda   +6 more
doaj   +1 more source

Prediction of fatigue crack propagation in metals based on IBAS-PF

Frontiers in Built Environment, 2022
Owing to particle leanness, the standard Particle Filter (PF) algorithm is prone to the problem of reduced prediction accuracy when predicting fatigue crack propagation.
Su Wensheng, Gu Zhenhua, Gu Jiefei, Xue Zhigang   +3 more
doaj   +1 more source

When States Crack Down on Human Rights Defenders [PDF]

International Studies Quarterly, 2019
Abstract Research suggests that civil society mobilization together with the ratification of human rights treaties put pressure on governments to improve their human rights practices. An unexplored theoretical implication is that pressure provokes counterpressure.
Bakke, Kristin M, Mitchell, Neil J, Smidt, Hannah M   +2 more
openaire   +5 more sources

Fatigue crack growth behavior under multiaxial variable amplitude loading [PDF]

Fracture and Structural Integrity, 2016
This study compares both uniaxial and multiaxial variable amplitude experimental crack growth data for naturally initiated fatigue cracks in tubular specimens of 2024-T3 aluminum alloy to predictions based on two state-of-the-art analysis codes: UniGrow ...
Nicholas R. Gates, Ali Fatemi, Nagaraja Iyyer, Nam Phan   +3 more
doaj   +2 more sources

Bond–slip Behavior of Fiber-reinforced Polymer/concrete Interface in Single Shear Pull-out and Beam Tests [PDF]

, 2015
It has been assumed that the fiber-reinforced polymer/concrete interface is subjected to in-plane shear condition when intermediate crack debonding failure occurs.
Harries, Kent A., Mohammadi, Tayyebeh, Wan, Baolin   +2 more
core   +2 more sources

Fracture of disordered solids in compression as a critical phenomenon: I. Statistical mechanics formalism [PDF]

, 2002
This is the first of a series of three articles that treats fracture localization as a critical phenomenon. This first article establishes a statistical mechanics based on ensemble averages when fluctuations through time play no role in defining the ...
A. A. Griffith, A. Hansen, A. Hansen, C. Shannon, D. Sornette, G. G. Batrouni, H. J. Herrmann, J. B. Rundle, J. V. Andersen, J. W. Rudnicki, L. de Arcangelis, L. de Arcangelis, L. Golubovič, M. Kloster, M. Sahimi, M. Sahimi, M. Sahimi, P. C. Hemmer, P. M. Duxbury, R. L. Blumberg Selinger, Renaud Toussaint, S. Arbabi, S. D. Zhang, S. R. Pride, S. Zapperi, S. Zapperi, Steven R. Pride, Y. Moreno, Y. Moreno, Z. G. Wang   +29 more
core   +5 more sources

Transient analysis on track circuits in crack state

MATEC Web of Conferences, 2018
The transient transformation of track circuit between the normal state and crack state is analyzed. Firstly, the model of crack state of track circuit in the complex frequency domain is established.
Bin Zhao
doaj   +1 more source

Fatigue Crack Growth from Notches: A Numerical Analysis

Applied Sciences, 2020
A numerical approach based on plastic crack tip opening displacement (CTOD) was followed to study fatigue crack growth (FCG) from notches. The identification of fundamental mechanisms was made considering notched and unnotched models, with and without ...
Micael Borges, Manuel Caldas, Fernando Antunes, Ricardo Branco, Pedro Prates   +4 more
doaj   +1 more source