Results 11 to 20 of about 31,598 (181)

Determining fracture energy parameters of concrete from the modified compact tension test [PDF]

open access: yesFracture and Structural Integrity, 2014
The modified compact tension (MCT) test, though not yet recognized as a valid test for determining fracture energy of concrete, is believed to represent a plausible and suitable alternative versus other well established procedures, such as the wedge ...
A. Fernández-Canteli   +5 more
doaj   +3 more sources

Investigation of the influence of impurities typical in secondary raw materials on the behavior of high alumina castables – Part 1: Design of the castables, setting properties and high temperature fracture behavior

open access: yesOpen Ceramics, 2023
The research was carried out using a primary high alumina raw material that was selectively spiked with typical elements found in secondary raw materials. These artificially spiked raw materials were processed into cement-free high alumina monolithics by
Laura Erbar   +7 more
doaj   +1 more source

Non-uniqueness of fracture parameter choice in simulations of concrete cracking at mesoscale level

open access: yesArchives of Mechanics, 2023
In the paper a non-uniqueness of fracture parameter choice in simulations of cracking process in plain concrete specimens at mesoscale level under monotonic static loading is analysed.
B. Kondys, J. Bobiński, I. Marzec
doaj   +1 more source

Fracture energy evaluation of refractories in wedge splitting tests from notch opening displacements [PDF]

open access: yesJournal of the European Ceramic Society, 2021
Abstract The work of fracture of refractories is commonly calculated from crack mouth opening displacements (CMODs) in wedge splitting tests (WSTs). This paper proposes a methodology for estimating the fracture energy from notch opening displacement (NOD) measurements, which is useful for setups where CMOD is not accessible.
R. Vargas, R.B. Canto, F. Hild
openaire   +1 more source

A projection-based approach to extend digital volume correlation for 4D spacetime measurements

open access: yesComptes Rendus. Mécanique, 2023
In-situ (tomography) experiments are generally based on scans reconstructed from a large number of projections acquired under constant deformation of samples. Standard digital volume correlation (DVC) methods are based on a limited number of scans due to
Kosin, Viktor   +5 more
doaj   +1 more source

Vibrated concrete vs. self-compacting concrete: comparison of fracture mechanics properties [PDF]

open access: yes, 2014
This study focuses on the fracture mechanics aspect of self-compacting concrete, compared to vibrated concrete. The most commonly used experiments to investigate the toughness and cracking behaviour of concrete are the three-point bending test (3PBT) on ...
Boel, Veerle   +3 more
core   +1 more source

Influence of the Amount of Steel Fibers on Fracture Energy and Drying Shrinkage of HPFRCC

open access: yesAdvances in Materials Science and Engineering, 2020
The fracture energy of the high-performance fiber-reinforced cement-based composite (HPFRCC) can be modified within wide limits by the variation of the amount of steel fibers added to the fresh mix.
Weina Guo   +4 more
doaj   +1 more source

Coniform-shape tool for splitting of wooden logs

open access: yesResearch in Agricultural Engineering, 2015
The article deals with design of a coniform tool with rotary motion for splitting of logs. The tool is proposed using a fracture mechanics theory. The approach of energy balance during crack growth in a split wood log is applied for construction design ...
F. Bodnár, M. Minárik
doaj   +1 more source

Investigation of different discrete modeling strategies to mimic microstructural aspects that influence the fracture energy of refractory materials

open access: yesOpen Ceramics, 2022
The mismatch between the coefficient of thermal expansion of the constituents within refractory ceramics could advantageously be used to tune the fracturing behavior by inducing numerous microcracks within the microstructure.
Farid Asadi   +5 more
doaj   +1 more source

Measurement of Birefringence of Low-Loss, High-Reflectance Coating of M-Axis Sapphire [PDF]

open access: yes, 2001
The birefringence of a low-loss, high-reflectance coating applied to an 8-cm-diameter sapphire crystal grown in the m-axis direction has been mapped. By monitoring the transmission of a high-finesse Fabry-Perot cavity as a function of the polarization of
Camp, Jordan B.   +3 more
core   +1 more source

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